Chery C. Lacaden
This value chain (VC) study presents the price and cost structure of the pineapple industry in Nueva Vizcaya, Philippines. It gives emphasis on the value created by key players in each segment. It was conducted among farmers, traders, processors, and stakeholders of the top three producing municipalities in the province. The producer respondents were selected using stratified random sampling while traders and processors were completely enumerated. Results were established through validating the survey with key informants, and eventually were analyzed using the value chain framework. Seemingly, the ‘’pineapple processing’’ segment can best create the best value; however, activities were irregular which is similar to the retail value chain. The ‘’trading’’ segment regularly performed by brokers created the most value, next to the production chain. Finally, gaps in the industry commands the strong commitments of the enabling stakeholders to improve and promote investments. Policy implications such as the support of the local government units to include pineapples in their priority crops. The results can likewise serve as a basis for identifying commodity investment priorities in the province.
Keywords: key players, Nueva Vizcaya Pineapples Philippines, value chains analysis
Citation (APA): Lacaden, C. C. (2016). The Price and cost structure of the pineapple industry in nueva vizcaya: 2015 value chain study. NVSU Research Journal, 3(1), 5-16.Download File
Marie Grace S. Cabansag
The study assessed the water quality of the Cagayan River as characterized by physical and chemical parameters to provide baseline information for the local government to implement stricter measures on wastewater management and in order to prevent remarkable contamination of the renowned longest river in the country. The grab method of specimen sampling was used in different stations with three strata. The obtained results of the physical and chemical properties of the river were compared to water quality standards set by the Bureau of Fisheries and Aquatic Resources (BFAR) and the Department of Environment and Natural Resources (DENR). The assessment showed that the Cagayan River in the study site is contaminated with ammonia that is remarkably high and denotes high level of nutrients from wastewater disposed into the river. Anthropogenic activities largely contribute to the change of river water quality. Hence, the study site is predisposed to pollution. Local dwellers and agencies in different sectors advocating care for the environment are encouraged to take aggressive actions to minimize the direct inflow of wastewater into the river in order to control the increasing nutrient deposition that will bring a subsequent death of a river.
Keywords: pollution, river, wastewater, water quality
Citation (APA): Cabansag, M. G. S. (2016). Characterizing the water quality of the Cagayan river: Basis for community action programs toward prevention of water pollution. NVSU Research Journal, 3(1), 17-27.Download File
Romeo Garcia Seguban, Charles Joseph Ceazar Mendoza Seguban, Freddie O. Orperia, Alfonso R. Simon, and Erlinda M. Bumagat
This study was concentrated on the performance of a portable solar-powered apparatus for water pumping systems intended for small irrigation, safe drinking water, sanitation water supply, and wide variety of lighting, ventilating and charging applications. This is a 4 in 1 apparatus which answers to the biggest challenge facing the world today which is Energy Independence and Food Production (EIFP). The project was evaluated along design, construction, efficiency, acceptability, functionality, affordability and safety.
The Project Development Method (PDM) was used in making the project. The descriptive-evaluative research design was applied to test its performance. There were one 140 respondents of the study. The five-point Likert’s Scale and WAM were applied to interpret the equivalent meanings of the data gathered. Likewise, the ANOVA was used to determine the significant difference between the responses of the four groups of respondents.
The findings revealed that the apparatus gave an “excellent” performance. It has a good design, constructed properly, efficient, highly acceptable, functional, affordable to own and very safety to use.
It can satisfactorily produce a volume of 600 m3 (159,600 US-Gal. /day), /day of water at a lift of 15 meters (46 ft.). The Evapo-Transpiration (ETo) is 5.5 mm/day. The irrigation efficiency is 65 % and the irrigation area is 7.1 ha (28.7 acres). It can efficiently run a 1 HP (750W) submersible pump with 2,500 liter/hour. The maximum jet of water is 20 meters. The total savings after 60 months is Php 109,800.00. The apparatus is economical, affordable, and technically practical.
Keywords: battery charging, construct, design, evaluate, irrigation system, lighting, solar-powered, ventilating
Citation (APA): Seguban, R. G., Seguban, J. C. M., Orperia, F. O., Simon, A. R., & Bumagat, E. M. (2016). A portable solar-powered generating apparatus for irrigation system of small scale farming “tubig at ilaw mula sa araw”. NVSU Research Journal, 3(1), 28-39.Download File
Jenifer Raymond R. Tallungan and Demetria A. Corpuz
The success of a learning community lies on how the students may benefit from the curriculum which is fundamentally anchored on constellation of human needs. This study delved on the cognitive test construction skills of prospective teachers in a state university of Cagayan Valley who will eventually partake enormously in such success through assessment. Through a writing simulative activity, the level of cognitive test construction skills of 103 randomly selected respondents are unveiled to be high along multiple choice, matching, alternate response, and simple recall types, however average in completion and essay types. Further, their level of proficiency in establishing general validity and usability of cognitive tests is high while the level of their proficiency in preparing cognitive tests that measure higher order thinking skills (HOTS) is average. At 0.05 level, significant correlations were disclosed between their proficiency in preparing cognitive tests and their proficiency in establishing general validity and usability while otherwise with their proficiency in writing tests that measure HOTS. The results prompted better perspectives on the teacher education students’ enhancement experiences in preparing quality assessment tools.
Keywords: cognitive test construction skills, higher order thinking skills, prospective teachers, validity, usability
Citation (APA): Tallungan, J. R. R. & Corpuz, D. A. (2016). Cognitive test construction skills of prospective teachers: Ensuring quality student learning outcomes. NVSU Research Journal, 3(1), 40-50.Download File
Leticia D. Guinsiman
The study aims to describe the cultural and linguistic identity of Kalanguya as bases in establishing the Kalanguya orthography. The background of the study presented the issues of Kalanguya affecting their cultural and linguistic identity. The possible origin of Kalanguya ethnolinguistic group had been analyzed as important features and goals of orthography. This is a qualitative framework drawn from the fields of Ethnohistory and Ethnolinguistic research designs, resulting in autoethnographic analysis since I speak the language. For validation and confirmation of the analyzed data gathered, the researcher had conducted: a) series of FGD and critiquing by the end users b) research output presentation c) validation and seminar – training on Kalanguya language and culture with the DepEd teachers, elders, SB members including NCIP office. During the validation, the Kalanguya language settled with four (4) variants described as: Nînî, Kib – al, Keley – i and Dêkey. The informants settled and preferred the word variants not dialects. The vowels and consonant sounds of the Kalanguya language had been identified and described as basis in identifying the letters of Kalanguya orthography. Result showed that Kalanguya language has four-vowels and 14 consonants. In order to come-up with standardized and harmonized orthography and addressed the issues of orthography, a new and modern orthography of Kalanguya language has been re-examined and established. The new and modern Kalanguya language adopts the 28 letters as based on: 1) vowel and consonant sounds existing in the Kalanguya language 2) vowels and consonant sounds existing in the variants of Kalanguya language 3) vowels and consonant sounds existing in the New and Modern Filipino Orthography. The non-letters are the punctuation marks such as question mark, period, exclamation mark, hyphen, and apostrophe. Finally, the informants settled with the use of diacritical marks identified as: acute-pahilis (΄) grave – paiwa (`) circumflex – pakupya (ˆ) and dieresis or umlaut – patuldok (¨)
Keywords: Kalanguya language, new and modern orthography, origins, variants
Citation (APA): Guinsiman, L. D. (2016). Establishing standardized and harmonized Kalanguya orthography towards effective writing: A contribution in MTB-MLE Curriculum. NVSU Research Journal, 3(1), 51-71.Download File
Julius Jerome G. Ele, Josephine R. Migalbin, Elma G. Sepelagio, and Peter Greame F. Lacia
Mangosteen is a tropical fruit known to have therapeutic and medicinal properties. The beneficial effects of mangosteen include antioxidant, anti-inflammatory, antihistamine, antibacterial, antifungal, anticancer, antiviral, antidiabetic, nerve, blood, digestive and cardiovascular functions. The general objective of the study is to determine the performance of broiler chickens fed diets with different levels of mangosteen rind powder. The study was conducted in a Completely Randomized Design. A total of one hundred (100) birds for study 1 and eighty (80) day old chicks for study 2 were randomly distributed into five (5) different treatments namely T1 – basal diet (corn-soya based) control, T2 – basal diet + commercial antioxidant, T3 – basal diet + 33 g mangosteen rind powder (MRP)/ kg of feed, T4 – basal diet + 66 g of mangosteen rind powder/ kg of feed and T5 - 100 g of mangosteen rind powder/ kg of feed.
There were no significant differences observed in the final weight, total feed intake, total weight gain, feed conversion efficiency, dressing percentage, livability, production number and index of broilers fed with five treatment diets.
No significant differences were noted in the broiler’s cholesterol, HDL and LDL levels at day 14 fed diets with different levels of mangosteen rind powder. Meanwhile, triglycerides level at day 14 and day 28, cholesterol, HDL and LDL levels at day 28 showed significant differences among treatment means.
Weight of internal organs (heart, liver, and gizzard) relative to body weight (BW) showed no significant differences among treatment means for day 14 and day 28.
For the cost and return analysis, highest ROI (%) was obtained by the birds fed with commercial antioxidant at 49.89%. This was followed by the control group at 47.34%. Treatment with 66 g of MRP followed with 45.82%, then by treatment with 100 g of MRP at 43.90%. Lastly, the 33 g of MRP group had 40.06%.
Feeding broilers with diets with different levels of mangosteen rind powder have shown similar growth performance results of mangosteen rind powder and those fed with commercial antioxidants. Moreover, the results have shown that the 66 g of mangosteen rind powder and 100 g of mangosteen rind powder are capable of decreasing the amounts of triglycerides, increasing the amounts of HDL (High Density Lipoprotein) and reducing the levels of LDL (Low Density Lipoprotein).
Keywords: mangosteen rind powder, broiler chickens, growth performance, anatomical and metabolic effects
Citation (APA): Ele, J. J. G., Migalbin, J. R., Sepelagio, E. G., & Lacia, P. G. F. (2016). Performance of broiler chickens fed diets with different levels of mangosteen (Garcinia mangostana Linn.) rind powder. NVSU Research Journal, 3(2), 5-20.Download File
Dennis Hope R. Directo
This study was undertaken to configure a convenient Thin Client Computer Workstations to various offices leading to a Green Earth Friendly Computing Environment. Thin client systems are intended for office computing task such as the use of office productivity tools, internet surfing and the likes that does not require powerful / high performance computer workstations.
Using the feasibility research methodology in the conduct of the study, finding shows that using the Thin Client Technology, the power consumption and cost of hardware is lesser than the existing systems used by various offices. It is recommended that Thin Client Systems be used for light application such as Productivity Tools, Web browsing, and other light applications common to offices.
Keywords: thin client technology, green computing, green office
Citation (APA): Directo, D. H. R. (2016). Green office computer workstations using thin client system. NVSU Research Journal, 3(2), 21-25.Download File
Shierel F. Vallesteros
Gmelina (Gmelina arborea Roxb.) is the most important timber species in Nueva Vizcaya and neighboring provinces in the northern part of the Philippines in terms of current contribution in wood supply and the available timber stocks in almost all lands where people plant trees. However, seeing possible supply problems in the future because the rate of planting is not making up for harvesting, a study that supports tree improvement for increasing wood yield was conducted.
The study presents different tree forms that tree owners may prefer, namely, bole form, presence or absence of upright branches, crown form and branch angle. These tree forms are alternative to the obvious choice of form for timber yield, which is long, straight, and branchless — the form that converts well to lumber. Factors that may affect preferences were also explored. Regeneration techniques, occupation, education, crown diameter, DBH, and silvicultural practices appeared to be associated with the desired timber form of tree owners.
Keywords: Gmelina arborea, silviculture, tree form, tree improvement
Citation (APA): Vallesteros, S. F. (2016). Tree owners’ characteristics and practices that define timber form for Gmelina arborea Roxb. NVSU Research Journal, 3(2), 26-38.Download File
Joel G. Carig1 and Elizabeth T. Carig
Quirino province’s economy is largely dependent on agriculture. The extended wet and dry seasons experienced by the local community is expected to occur repeatedly in the future, which implies that local people and their livelihoods may continue to become vulnerable to the negative impact of the changing climate. This study was therefore conducted to determine the livelihood vulnerability of farming communities across the five livelihood asset using the LVI and IPCC-VI method and develop a livelihood vulnerability map for the study area. Key informants interview were also undertaken to validate data gathered from the survey. A total of 139 farmers from barangays of Liwayway in the municipality of Diffun, Villamor in Cabarroguis, Tres Reyes in Saguday, Dumabato Norte in Maddela and San Ramos in Nagtipunan, served as respondents of the study. This study employed descriptive method using survey questionnaire to gather the necessary data. The Livelihood Vulnerability Index (LVI) using multiple indicators and the Intergovernmental Panel on Climate Change – Vulnerability Index (IPCC-VI) were used in determining the livelihood vulnerability index of the respondents. The LVI and IPCC-VI results are consistent, showing the farming communities under study, are moderately vulnerable to the impact of the changing climate. Human, natural, social, physical and financial assets may be enhanced to improve the local farmers’ capacity to recover from the negative impact of climate change. The development of livelihood vulnerability index map could provide helpful information on local planners and decision makers in planning appropriate projects and programs for adaptation.
Keywords: climate variability, livelihood, livelihood assets, vulnerability index
Citation (APA): Carig, J. G. & Carig, E. T. (2016). Vulnerability assessment of people’s livelihood in Quirino: It’s implication on adaptation to climate change. NVSU Research Journal, 3(2), 39-53.Download File
Dennis Hope R. Directo
Subjective listening test is one of the most reliable and definitive way of assessing the effectiveness of Voice over Internet Protocol Technology. One of the various ways to assess VoIP is the Mean Opinion Test (MOS Test). This study aimed to measure the MOS Score of the implemented VoIP system in Nueva Vizcaya State University – Bambang Campus. The study utilized the descriptive method of research to verify theories that refers to the present situation. The proponent used several techniques such as the use of questionnaires, interview, observation, and a rubric to gathering facts and information.
The study shows that the call quality produced by the implemented VoIP system is comparable to the quality produced by traditional telephone and cellular phone system having an average MOS mean of 4.49 which is slightly higher that the industry standard. It is therefore recommended to fully implement such technology to various offices of the university to minimize the subscription of telephone lines and maximize existing telephone systems.
Keywords: MOS Test, VoIP, subjective listening test
Citation (APA): Directo, D. H. R. (2016). NVSU VoIP: A mean opinion score (MOS) assessment. NVSU Research Journal, 3(2), 52-64.Download File
Rey C. Naval and Elizabeth T. Carig
Soil erosion is a common problem worldwide. There are lots of models developed to estimate soil loss; however, most of them are location specific. The study assessed the adaptability of the Soil and Water Assessment Tool (SWAT) model for estimating soil losses under different slopes and management practices in upland corn production from January 2015 to December 2016. The study included establishment of erosion plots with three management practices (as treatments) to include: T1 (conventional tillage), T2 (minimum tillage) and T3 (minimum tillage + hedgerow). The portable Automatic Weather Station (AWS) was also installed in the area to record the amount of rainfall. The coefficient of determination was used to compare the measured and simulated data while the Nash-Sutcliffe efficiency was used for determining the adaptability of the model. Sensitivity analysis of scenarios for various slopes and management practices were also done. The 86.95% coefficient of determination and 0.81 Nash-Sutcliffe efficiency revealed the statistical acceptability of the SWAT model. Results also have showed that a substantial reduction in annual soil loss of up to 40% and 27% is achieved when minimal tillage and minimum tillage plus hedgerows, respectively are performed in contrast with traditional tillage practices. Highest yield was observed in the treatment minimum tillage plus hedgerows. The findings of the study can be used in the formation of policies and decision-making support mechanisms for the conservation and utilization of agricultural resources for improved and sustainable corn farming in the upland areas of Quirino, Philippines.
Keywords: estimation, soil loss, SWAT, upland agriculture
Citation (APA): Naval, R. C. & Carig, E. T. (2016). Estimation, soil loss, SWAT, upland agriculture. NVSU Research Journal, 3(2), 58-65.Download File
Realson C. Corbe and Oliva M. Gaffud
The study was conducted to determine the influence of climate change on prevalence of livestock diseases in Cagayan Valley from 2009 to 2012. Four provinces - Cagayan, Isabela, Quirino and Nueva Vizcaya - were selected as study sites. Batanes was not included because of its remote location and being a low-risk area. Sources of data were the Regional Animal Disease Diagnostic Laboratory, Provincial Veterinary Offices, Bureau of Agricultural Statistics and ISU-PAGASA Agromet Station.
Prevalent livestock diseases were Hemorrhagic septicemia, Ephemeral fever, Surra, Fascioliasis and Swine enzootic pneumonia. Fascioliasis was the most prevalent with an annual average prevalence of 8.82 per 10,000 animal population.
Diseases common during the rainy season were Hemorrhagic septicemia, Ephemeral fever, Surra, Fascioliasis and Swine enzootic pneumonia. Surra, Fascioliasis and Swine enzootic pneumonia were commonly observed during the dry season. Disease cases during dry season were far lower compared to rainy season. There was a significant (0.05 level) correlation between temperature and Fascioliasis prevalence, and a highly significant (0.01 level) correlation between rainfall and Surra prevalence.
No new disease emerged during the conduct of study. All the diseases identified in Cagayan Valley were endemic or constantly occurring.
Keywords: impact, climate change, prevalence, diseases
Citation (APA): Corbe, R. C. & Gaffud, O. M. (2015). Influence of Climate Change on Prevalence of Livestock Diseases in Cagayan Valley. NVSU Research Journal, 2(1), 5-14.Download File
Julius S. Valderama
The study aimed to evaluate the effectiveness of the seven-year-old mathematics tutorial extension program of the College of Arts and Sciences (CAS). This was conducted in Bayombong West Elementary School (BWES), Nueva Vizcaya. The program started in 2006 in response to the mandate of the Nueva Vizcaya State University to expand its services by conducting extension work in the community. Primary data were collected from cooperating teachers, former and current principals, 114 pupil - clienteles and 10 randomly selected parents of the pupilrespondents. Secondary data were obtained from the BWES records and CAS Extension’s records. Data were analyzed using descriptive statistics.
Results revealed that the pupils’ attendance to the program improved their academic performance in the National Assessment Test (NAT). Positive changes in the pupils’ attitude and confidence level towards mathematics were also observed. Hence, the mathematics tutorial program of the CAS, in support to the regular classroom instruction, exhibited positive impact to grade six pupils in improving their academic performance and in imbibing positive attitude towards mathematics. The best practices of the program such as solving puzzles, quiz games and simulation examinations are highly recommended for use by other schools in order to improve pupils’ academic performance and attitude towards mathematics.
academic performance, attitude towards Mathematics, intervention, Mathematics, national assessment test, tutorial program
Keywords: impact, climate change, prevalence, diseases
Citation (APA): Valderama, J. S. (2015). Impact of the College of Arts and Sciences Mathematics tutorial extension program among the grade six pupils in a public elementary school in the division of Nueva Vizcaya. NVSU Research Journal, 2(1), 15-21.Download File
Agnes M. Ramos
The study was conducted to evaluate the performance of Isabela State University (ISU) BS Accountancy graduates in the CPA Board Examinations. ISU performance exceeded the national levels in 2007, 2009 and 2011-2014.
There were 73 respondents (41 male and 32 female) of which 80.82% passed the CPA Board Examination. Most of the 60.27% were able to pass the examination with one take. The performance in the CPA Board exam is significantly associated with gender of respondents and education of parents. It is also significantly associated with grades in eight subjects: 1)Fundamentals of Accounting II; 2) Sales, Agency, Labor and Other Commercial Laws; 3) Financial Accounting and Reporting I; 4) Financial Accounting and Reporting II; 5) Cost Accounting; 6) Advanced Accounting I; 7) Advanced Accounting III; and 8) Management Accounting I.
A passing performance in the CPA board exam with one take may be attained if the grades of the student are: a) 1.0 in Financial Accounting and Reporting I; b) 1.25 or better in Sales, Agency, Labor and Other Commercial Laws; c) 1.5 or above in Advanced Accounting III; d) 1.75 or better in Financial Accounting and Reporting II, Cost Accounting and Advanced Accounting I; and e) 2.0 or above in Management Accounting I.
The top three most difficult daunting subjects in the Board Examination were Auditing Theory, Business Law and Taxation, and Practical Accounting II. Problems met while reviewing included insufficiency of funds, low confidence levels and too many topics not discussed in the classroom.
Keywords: CPA, success factors, quality instruction
Citation (APA): Ramos, A. M. (2015). Evaluation of the performance of Isabela State University accountancy graduates in the CPA board examination. NVSU Research Journal, 2(1), 22-33.Download File
Julie A. Manuel
This study explored the potential of Moringa oleifera tea in enhancing the growth performance of broilers by evaluating the effect of varying concentration of moringa decoction given as a tea relative to their growth responses (final weight, total gain in weight and growth rate), cumulative feed consumption, feed conversion ratio and dressing percentage and determine which among the specified amount of leaves used for decoction could enhance the given performance parameters.
Following the Completely Randomized Design (CRD), 120-day-old broiler chicks per trial were randomly distributed to four (4) treatments with three (3) replications each. Treatments for moringa Tea decoction (weight by volume as grams fresh moringa leaves (FML) per liter of water) were: T1 (Control) with water soluble commercial vitamin – mineral supplement; T2: 25g FML; T3: 50g FML and T4: 75g FML. ANOVA (p-values) and Least Significant Difference (LSD) were used for data analysis. Broilers given moringa Tea decoction (Trial 1) significantly differed over T1 (Control) in final weight, total gain in body weight, feed conversion ratio and yielded insignificant dressing percentage (with and without giblets). Trial 2 revealed comparable results in the different performance parameters. The T3 (50g FML) in moringa Tea decoction gave the best results to broilers. Thus, moringa Tea can be used as an inexpensive and safe alternative nutrient supplement to enhance growth and performance of broiler chicken.
Keywords: Moringa, broiler chicken, growth, performance, Moringa tea decoction, Moringa tea powder, air-drying, sun-drying
Citation (APA): Manuel, J. A. (2015). Growth and performance of broiler chickens supplemented with Moringa oleifera tea. NVSU Research Journal, 2(1), 34-39.Download File
Gayon P. Sarmiento
Productivity of pole snap bean farmers can be improved by adoption of better production technologies, or improvement of production efficiencies, or both. However, since producers of pole snap beans are marginal farmers on marginal lands, adoption of improved production technologies are very slow; hence, improvement in efficiency becomes the better option. This study determined efficiencies of pole snap bean farmers in Nueva Vizcaya, Philippines. Multistage random sampling was adopted with a total of 90 farmers interviewed. The stochastic production frontier was used to estimate technical efficiency. The Cobb-Douglas production function was applied since this function fits agricultural data well. Results revealed that pole snap bean production in Nueva Vizcaya is technically inefficient. Technical efficiency estimates showed that seed was significant at 10%, while fertilizer, insecticide, fungicide and herbicide were significant at 1%. This implies that the amount of seed, fertilizer, insecticide, fungicide and herbicide applied have significant effects on the production of pole snap beans. Improving technical efficiency of farmers, therefore, may result in better yield, lesser cost and higher net returns. Socioeconomic factors of farmers such as years of schooling and access to credit significantly influenced the farmers’ technical efficiency. Moreover, results showed that pole snap bean producers lack technical knowledge particularly on the use of commercial inputs. Government interventions, such as seminars and trainings, may then be necessary to improve efficiency of pole snap bean farmers. Farmers’ associations and cooperatives may be of help for farmers to have access to formal credit.
Keywords: technical efficiency, pole snap bean production
Citation (APA): Sarmiento, G. P. (2015). Technical efficiency of pole snap bean (Phaseolus vulgaris L.) farmers in Nueva Vizcaya, Philippines. NVSU Research Journal, 2(1), 40-45.Download File
Jayson Q. Caranza
Organic wastes if properly recycled can mitigate greenhouse gas emissions. Using it as soil amendment through vermicomposting must cover an understanding on the behavior of pollutants, such as heavy metals, in the process. The study aimed to identify the bioavailability shift of Pb, Cr, Ni, Cu and Zn during vermicomposting of combined farm wastes (crop residue + spent mushroom substrate + cow manure) using the Tessier sequential extraction procedure to extract the exchangeable and carbon-bound metal fractions. Concentrations of heavy metals in the substrates before and after vermicomposting, growth performance and heavy metal bioaccumulation of Eisenia fetida in three cycles of 45 days each were also studied. Test results revealed an increase in bioavailability for Cu (43.85%), Zn (40.76%) and Ni (16.34%); while bioavailability of Cr and Pb decreased by 12.97% and 1.43% after vermicomposting. Resulting vermicompost assessments showed a significant reduction in the concentration of metals, Zn (40.21 - 49.45%), Ni (20.89 - 54.05%), Cu (27.76 - 53.54%), Cr (9.71 - 22.03%), and Pb (1.97 - 32.93%). Analysis of metal concentrations in earthworms revealed a considerable bioaccumulation of heavy metals in their bodies. Overall, the increase in the bioavailability of some heavy metals was compensated by the reduction of the total heavy metal concentrations in the resulting vermicompost, rendering the concentrations of bioavailable heavy metal fractions lower than their initial values.
Keywords: Eisenia fetida, farm waste, heavy metal bioavailability, vermicomposting
Citation (APA): Caranza, J. Q. (2015). Bioavailability shift of heavy metals in vermicomposting: Investigating a potential approach to climate change mitigation. NVSU Research Journal, 2(1), 46-54.Download File
Elbert A. Sana, Florentina S. Dumlao, and Agustin B. Lunag
The Nueva Vizcaya State University (NVSU), one of the four state universities of the Philippines in Cagayan Valley, started implementing its climate change program in 2013 with funding support from the Commission on Higher Education. The program consists of seven project components focused on developing sustainable agricultural production systems for climate change vulnerable areas of Nueva Vizcaya. A portion of the project component involving organic rice, vegetables, and bananas selected three rice farmers in the rainfed uplands of Buyasyas Village in the north-east of Sta. Fe, Nueva Vizcaya. The site is at 900 m above sea level with about 30 hectares of rainfed lands planted to traditional rice cultivars.
The study profiled the three rice farmer cooperators and their production practices for traditional rice cultivars. The study also showcased and facilitated the use and on-farm production of effective microorganism (EM) compost being promoted by NVSU and reinforced knowledge of farmers on soil conservation in hilly lands through hedgerow planting of an introduced pegionpea breeding line ICP 7035 from the International Crop Research Institute for the Semi-Arid Tropics (ICRISAT).
After a cycle of rice production in the demonstration farms, the initial application of EM compost in selected portions enhanced soil fertility and indicated improved grain filling in Mindoro, a pigmented rice cultivar produced by farmer cooperators. The training on biofertilizer production guided farmers in establishing their own composting shed and starting their on-farm EM compost production. Hedgerow planting of ICP 7035 was adopted which provided protection against soil erosion and gave farmers fresh edible seeds. The paper reports significant findings of the study and its implications to climate change resilience and countryside development.
Keywords: climate change, effective microorganisms (EM), traditional rice cultivars
Citation (APA): Sana, E. A., Dumlao, F. S., & Lunag, A. B. (2015). EM-composting and hedgerow planting for upland organic rice of Nueva Vizcaya, Philippines. NVSU Research Journal, 2(2), 5-11.Download File
Yolina T. Castañeto and Elmer T. Castañeto
Nursery experiment on clonal propagation was conducted using indigenous species of Lubeg (Syzygium lineatum). This species has multiple uses and a potential crop for upland rehabilitation. Stem cuttings were collected from seedlings of Lubeg (Syzygium lineatum) and observed for the formation of adventitious roots. Rooting of stem cuttings was done using different rooting media such as sand and coir dust (T1), sand and charcoal (T2), sand and vermicompost (T3), and sand and rice hull in 2:1 ratio by volume. The following parameters were used: Percent survival, percent sprouting, percent rooting, length of sprouts, length of adventitious root and number of adventitious roots produced to assess the rooting of the two species in different rooting media.
Observation on the rooting of the species revealed that the different rooting media influenced the rooting of Lubeg. Lubeg macropropagation using stem cuttings was found feasible. Lubeg cuttings root formation was affected by the rooting media used except for the length of cutting sprouts. Among the four media, Lubeg cuttings grown in sand and coir dust gave higher percent survival, percent rooting, percent sprouting, length of roots and number of adventitious roots. From the results, Lubeg cutting’s best rooting was achieved using sand and coir dust and therefore, is recommended for use on rooting the said species using stem cuttings collected from seedlings.
Keywords: stem cuttings, macropropagation, indigenous tree species, sand and coir dust, rooting media, percent survival
Citation (APA): Castañeto, Y. T. & Castañeto, E. T. (2015). Clonal propagation of lubeg (syzygium lineatum) using stem cuttings in different rooting media. NVSU Research Journal, 2(2), 12-16.Download File
Ramil S. Rodriguez
The study was conducted in Barobbob Watershed, Sitio Pawac, Barangay Masoc, Bayombong, Nueva Vizcaya, Philippines. The study assessed the effects of the four dominant agroforestry practices on the condition of the soil such as physical characteristics, soil erosion and rate of infiltration. The study also assessed the relationship of the amount of rainfall that prevailed during the time of the study to the generated values of runoff, sediment yield and sheet erosion.
Experimental plots were established in the different agroforestry practices and in the residual forest to measure the amount of erosion and rate of infiltration. Among the agroforestry practices, multistorey had better effects on the soil condition of the watershed.
Keywords: agroforestry, runoff, sediment yield, soil erosion, infiltration
Citation (APA): Rodriguez, R. S. (2015). The effects of agroforestry practices on the soil properties of Barobbob watershed, Nueva Vizcaya, Philippines. NVSU Research Journal, 2(2), 17-31.Download File
Julius S. Valderama, Fermila D. Cauilan, Marigem J. Pascual, and Lorna L. Oligo3
A learning institution should provide equal opportunities to each student to enhance and maximize their learning potential without any feeling of prejudice. Discrimination in the school is one of the factors that could affect the individual’s performance. There were several sources of discrimination such as gender, ethnicity, religion and socio-economic status. These suppress the students’ right to education and affect their potential to grow and develop.
The descriptive – correlation design was used in order to profile the respondents as to their academic performance across gender, ethnicity, religion and socio-economic status. Likewise, to establish relationship of the students’ perception on the equity of the right to education as influenced by the profile variables to their academic performance. The study was conducted in one of the State Universities in Northern Philippines with a sample population of 60%, all of which are fourth year students, proportionately distributed to the colleges. A validated research instrument was used; data were tabulated and analyzed using cross tabulation, analysis of variance and univariate analysis.
The study found out that gaps among students as to their perception to students’ right to education as affected by their gender, ethnicity, religion and socio-economic status existed. The discrimination experienced by the students from other students of opposite gender, different ethnicity, religion and socio-economic status affected their academic performance. Likewise, discrimination experienced from university office staffs in using facilities such as laboratories, library and recreational activities, and even in the university dormitories and nearby boarding houses were found to affect the students’ academic performance.
Keywords: academic performance, students’ right to education, discrimination, school biases, univariate analysis, Philippines
Citation (APA): Valderama, J. S., Cauilan, F. D., Pascual, M. J., & Oligo, L. L. (2015). Equity of student right to education as perceived by college students across gender, ethnicity, religion and socio-economic status, and its relationship to students’ academic performance. NVSU Research Journal, 2(2), 32-46.Download File
Gayon P. Sarmiento
Mandarin production and marketing have developed very significantly in recent years. However, the industry in Nueva Vizcaya, Philippines, a much heard mandarin producer, was not able to develop by world standard. There is definitely a need for government to intervene. The value chain analysis approach is used in this study to provide direction for growth and development of the mandarin industry by analyzing opportunities and constraints, identifying viable interventions, formulating strategies and setting competitiveness directions based on development thrusts of players, and stakeholders. Data were collected from different agencies and by interviewing key players in the mandarin supply chain. Opportunities and constrains were identified. Recommended interventions are capability building of farmer associations, forming farmers into production clusters for standardized production and marketing practices and management by using a package of technology, and continuous R and D on the enhancement of the mandarin chain from input provision to post harvest practices.
Keywords: agriculture, mandarin production and marketing, value chain analysis
Citation (APA): Sarmiento, G. P. (2015). Value chain analysis for mandarin in Nueva Vizcaya, Philippines. NVSU Research Journal, 2(2), 47-51.Download File
Marcelino T. Razalan, Jr.
The study aimed to determine the relationships between the tribal leaders’leadership capability and the effectiveness of the Certificate of Ancestral Domain Title (CADT) as an empowerment tool in the ancestral domain of the Ayangans. The study was undertaken in the selected barangays of the three municipalities of Nueva Vizcaya where the Ayangan has established their ancestral domain. There were 308 households who served as the respondents of the study selected through systematic random sampling. The result indicated tribal leaders were moderately capable in performing their executive, legislative and judicial leadership functions. Likewise, the CADT was moderately effective as an empowerment tool in the AD of the Ayangan. The data further denoted that the leadership capability of the tribal leaders and the effectiveness of the CADT as an empowerment tool are significantly and positively correlated inferring a direct relationship between the variables.
Keywords: certificate of ancestral domain title, leadership capability, empowerment, Ayangan
Citation (APA): Razalan, M. T. (2015). Tribal leaders’ capability and the effectiveness of the certificate of ancestral domain title as an empowerment tool in the ancestral domain of the Ayangans in Nueva Vizcaya, Philippines. NVSU Research Journal, 2(2), 52-64.Download File
Edgardo M. Santos1
The study analyzed and correlated student’s motivation, learning strategies and proof construction skills in Basic Set Theory. The respondents of the study were the BS Mathematics fourth year students (N = 215) of the Bulacan State University taking up Real Analysis for the Academic Year 2014-2015. The study adopted the descriptive correlation design. To measure student’s proof construction skills, results of the written responses on the Proof Test was analyzed based on teacher – made rubrics. Through the use of the correlation method as a type of quantitative analysis, the researcher explored the existence of significant relationships among the variables mentioned. Among the factors of Motivation, the students posted high level of motivation in Value and Expectancy constructs, however of the Average level only in the Affect construct. The overall learning strategies of the students were described to be of average level with the three factors - Metacognitive Strategies, Non-Informational Resource Management Informational Resource Management falling under the same category. Whereas cognitive strategies were classified as high. On the proof construction results, students performed poorly considering bulk of their scores are in the lower half of the total range. Analysis showed only students’ motivation has significant, positive relationship with students’ learning strategies.
Keywords: Mathematics education, students’ motivation, learning strategies, proof construction skills, qualitative - quantitative methods of research, Philippines
Citation (APA): Santos, E. M. (2015). Students’ motivation, learning strategies, and proof construction skills in basic set theory: A correlation analysis. NVSU Research Journal, 2(2), 65-75.Download File
Kimberly Maye A. Sapigao and Orland P. Espiritu
The study determined the anthelmintic efficacy of different dosages of ground Acapulco seeds (GAS) against intestinal parasites of native chicken at the poultry project of the Nueva Vizcaya State University.
Twenty-five parasitized native chickens were distributed to five intervention groups with five birds per group following non-randomization procedures of a quasi-experiment. The intervention groups were Group 1 (IG1) – commercial dewormer (Albendazole, Positive Control); Group 2 (IG2) – non-medicated (Negative Control); Group 3 (IG3) – 10 g encapsulated GAS; Group 4 (IG4) – 20 g encapsulated GAS; Group 5 (IG5) – 30 g encapsulated GAS. Observations and data collection were done at 3, 6, 9 and 12 days post treatment.
Results revealed that ground Acapulco seeds were effective against Capillaria, Ascaridia and Tetrameres. Necropsy findings showed that 20 and 30 g encapsulated GAS were more effective than albendazole in eradicating adult parasites. Use of encapsulated GAS as anthelmintic for native chicken reduced deworming cost.
Keywords: ground acapulco seeds (GAS), parasitism
Citation (APA): Sapigao, K. M. A. & Espiritu, O. P. (2014). Ground acapulco (Cassia alata) seeds as potential dewormer for native chicken. NVSU Research Journal, 1(1), 5-13.Download File
Ryan P. Manuel
This is a fourth of a research series on Nueva Vizcaya’s freshwater quality employing benthic macroinvertebrates as bioindicators. The study determined the water quality of the Mapalyao Stream using macroinvertebrates as bioindicators and Hilsenhoff Family-Level Biotic Index as measurement of the indicators.
Two reaches (upstream, downstream) representing 2000 m of the stream were sampled. Sampling yielded 200 individuals representing 14 families and three orders/suborders. Collected taxa with highest sensitivity to pollution (lowest tolerance values) were Leuctridae (0), Rhyacophilidae (0), and Perlidae (1). Families with the highest tolerance values were Chironomidae (8), Caenidae (7), and Tabanidae (6). Chironomidae and Tabanidae were found at Reach 1 (upstream), particularly in stagnant, leech-infested pools. Collectively, Mapalyao Stream has a very good water condition, attributable to geomorphological characteristics of the stream.
Keywords: benthic macroinvertebrates, Hilsenhoff family-level biotic index
Citation (APA): Manuel, R. P. (2014). Benthic macroinvertebrates as indicators of pollution in Mapalyao stream of Nueva Vizcaya using the Hilsenhoff family-level biotic index. NVSU Research Journal, 1(1), 14-21.Download File
Wilfredo Obaldo M. Celeste, Jr. and Wilfredo A. Dumale, Jr.
The study investigated the growth and yield response of Basmati 370 to Bio-N under existing climatic conditions in Nueva Vizcaya.
The experiment was laid out in randomized complete block design (RCBD) with four replications. It was conducted during the wet season from September 2012-January 2013.
Results revealed that Bio-N application has no effect on growth parameters i.e. growth rate, plant height at harvest, number of tillers, length of panicles, spikelet sterility, and filled and unfilled grains. Moreover, the application of Bio-N also did not affect the number of days to maturity, panicle initiation, booting, and heading.
On the other hand, Bio-N application to Basmati 370 had improved significantly the yield parameters i.e., 1000 grain weight, and consequently, the yield per plot and computed yield per hectare. Computed yield was better by 44.13% for Bio-N treated grains.
In terms of the relationship between growth and weather elements as well as growth and solar radiation, the growth of Basmati 370 had significantly high positive correlation with temperature in both treatments. On the other hand, growth and relative humidity had a negative correlation in both treatments.
In Nueva Vizcaya therefore, the yield of Basmati 370 can be improved by the application of Bio-N.
Keywords: Basmati 370, Bio-N
Citation (APA): Celeste, W. O. M. & Dumale, W. A. (2014). Growth and yield response of Basmati 370 (Oryza Sativa L.) to Bio-N under existing climatic conditions in Nueva Vizcaya. NVSU Research Journal, 1(1), 22-33.Download File
Noverlee P. Calub, Liberty G. Torres, and Jonar I. Yago
The study determined the predaceous activity of different spore concentration of Arthrobotrys oligospora against larva of common housefly (Musca domestica), and the mode of action through microscopic examination at three (3) hours interval for 48 hours.
Synchronized reproduction of adult common housefly to produce similar stage of first larva instar was done. A total of 250 larvae were used in the study where 10 larvae were used for each treatment. There were five treatments; each treatment was replicated five times as follows: T1 - Malathion positive control), T2 - distilled water (negative control), T3 - 2000 spores of Nematophagous Fungi (NF), T4 - 4000 spores of NF, T5 - 6000 spores NF.
The study showed that nematophagous fungi at 4,000 and 6,000 spore levels were comparable to the commercially prepared larvicide (Malathion) in terms of its effects on percentage mortality starting 36 hours until 48 hours exposure. It was effective as biological control based on its the ability to trap and kill the larvae of the common housefly.
Keywords: predaceous activity, Musca domestica, Arthrobotrys oligospora
Citation (APA): Calub, N. P., Torres, L. G., & Yago, J. I. (2014). Predaceous activity and efficacy of Nematophagous fungi (Arthrobotrys oligospora) on the larva of common housefly (Musca domestica) in-vitro. NVSU Research Journal, 1(1), 34-39.Download File
R-Jay A. Hombrobueno and Vernadyn A. Morillo
The Native Guava (Psidium guajava Linn. var. native guava) Leaf Extract was evaluated for its hepatoprotective and nephroprotectiveproperties after induction of acute liver and kidney damage in laboratory mice using carbon tetrachloride (CCl4). The mice were orally administeredwith 1ml/200g body weight 3% CCl4mixed in corn oil and after 24 hours, the mice were sacrificed, and the liver and kidney were harvested for gross and histopathologic evaluation.
It was found that oral supplementation of native guava leaf extract (NGLE) at a concentration of 200mg/kg body weight prevented enlargement of both liver and kidney. Evaluation of macroscopic or gross lesions in both organs showed marginal or minimal presence of lesions. Histopathological evaluation of liver and kidney showed fewer numbers of observed cellular lesions with lesser degree and extent of tissue damage when compared with animals that did not receive any NGLE supplementation. This study was able to show that NGLE has hepatoprotective and nephroprotective properties and can be used to prevent kidney and liver damage.
Keywords: Nephroprotective, Hepatoprotective, Histopathological, Macroscopic, Native guava leaf extract (NGLE)
Citation (APA): Hombrobueno, R. A. & Morillo, V. A. (2014). Gross and histopathological evaluation of the hepatoprotective and Nephroprotective properties of native guava (Psidium guajava Linn. var. native guava) leaf extract on CCL4-fed white mice (Mus musculus). NVSU Research Journal, 1(1), 40-47.Download File
Mary Ruth O. Baral and Ma. Cecilia I. Salas
Two experiments conducted at the experimental field station of the Nueva Vizcaya State University from August 2013 to December 2013 aimed to develop a technology in the production of Stevia propagules using different stem cuttings and planted in different substrates. Field performance in terms of growth, yield, percent survival and quality were also studied. The first experiment was laid in 2 x 4 factorial in Completely Randomized Design (CRD) with three replications and the second experiment was laid in a 4 x 3 factorial in Randomized Complete Block Design (RCBD).
Based on the results of the study, the best substrate for stevia propagule production is 1:1 carbonized rice hull and garden soil. Economic and biological yield is best attained in the application of inorganic fertilizer (14-14-14, 46-0-0) or processed chicken manure (PCM). Sweeter taste is attained when the plant is applied with fertilizer inputs. Greener color is attained at planting distance of 30 cm x 20 cm.
Keywords: Stevia, organic fertilizer
Citation (APA): Baral, M. R. O. & Salas, M. C. I. (2014). Development of component technology for high yield and quality stevia (Stevia rebaudiana Bertoni). NVSU Research Journal, 1(1), 48-60.Download File
Shierel F. Vallesteros, Marco A. Galang, and Arvin P. Vallesteros
Three spatial analysis algorithms namely: inverse distance weighted (IDW), kriging, and spline, were used to interpolate soil pH and soil texture properties from sample point data. A random-point sampling was carried out to collect soil samples. Samples were analyzed in the laboratory.
Interpolation was carried out in ArcGIS 10. Root mean square error (RMSE) was calculated to evaluate the relative precision of the interpolation methods. IDW had the lowest RMSE for pH, OM, clay, and sand while kriging had the lowest RSME in silt. Spline had the highest RMSE for all of the four properties. Lower RMSE implies better interpolation result.
While the relative precision results appeared to be consistent, the analysis of variance revealed that the three interpolation methods were not significantly different (p>0.05) from each other. In addition, the soil map generated through kriging had the least visual appeal among the three methods.
The major outputs of the interpolation are surface maps (continuous data) of the five soil attributes. Surface maps are important material for decision making regarding land use, soil-plant compatibility, yield analysis, and soil improvement activities. Future research should take into account the topographic factors, existing vegetation and other important site properties.
Keywords: soil interpolation method, soil mapping, IDW, kriging, splinet
Citation (APA): Vallesteros, S. F., Galang, M. A., & Vallesteros, A. P. (2014). Point to surface mapping of selected soil properties using different interpolation techniques. NVSU Research Journal, 1(1), 61-71.Download File
Carina C. Ba-to and Bernardo S. Umaguing
This study was conducted for a feeding period of 35 days to explore the potential of ganoderma mycelia as an alternative feed source for broilers. One hundred twenty straight-run, day-old broiler chicks were randomly distributed to two treatments. The performance of broilers fed ganoderma mycelia meal with and without chitinase in the diet and its profitability was determined. Average final and gain in weights, feed conversion ratio and growth rate of broilers fed Diet 2 was statistically better than those fed Diet 1. No variations were observed in the average initial weight and feed consumption. Statistically better dressing percentage with and without giblets and weight of giblets in broilers fed Diet 1 when compared with those in Diet 2. Higher cost of feed per kg gain in weight was noted in broilers fed Diet 1 but these elicited higher returns due to higher average gain in weight and final weight. The result suggests that ganoderma mycelia can improve the performance of broilers and increase profitability.
Keywords: broiler, ganoderma, growth performance, mycelia, profitability
Citation (APA): Ba-to, C. C. & Umaguing, B. S. (2014). Performance of broilers fed ganoderma (Ganoderma lucidum) mycelia meal treated with chitinase in the diet. NVSU Research Journal, 1(1), 72-78.Download File
Elbert A. Sana, Agustin B. Lunag, Liberty G. Torres, Peter A. Piggangay, and Gaspar D. Baysa
The project partnership with the Department of Agriculture mobilized NVSU in promoting technologies and commercial use of certified seeds of improved inbred rice varieties by farmers in Nueva Vizcaya. In the scheme NVSU engaged in seed production, channeled a portion of the harvest to seed recipients from selected municipalities, monitored rice production and extended technical assistance to farmers, and sold the rest of the seeds through the Nueva Vizcaya Seed Growers and Marketing Cooperative.
NVSU set aside a 4.0-hectare area and produced for two seasons a total of 674 bags of certified seeds of improved inbred rice varieties preferred by farmers. The project channeled 200 bags through the Municipal Agriculture Offices of Aritao, Bayombong, Solano, and Villaverde, Nueva Vizcaya. Under an agreement, beneficiaries pay with 60 kg good seeds they produce from the 40 kg certified seeds they received from the project. The endeavor effectively promoted use of certified seeds and provided opportunities for technical sharing of inputs during monitoring, strengthening of linkage with partners, and generating income for the university from sales of certified seeds. Recorded yield showed a range of 3.75-6.30 tons ha-1 and a net income range of Php35,000-86,000 per ha for Bayombong, while 4.19-7.5 tons ha-1 with a net income range of Php42,500-110,000 per ha for Aritao, suggesting a relatively good harvest and farm income for users of NVSU-produced certified seeds.
A microproject was also set-up as a strategic approach for promoting certified seed production through an entrepreneurship scheme involving a senior graduating agriculture student. The student entrepreneur successfully produced certified seeds from half a hectare with technology applications from seed preparation to post-harvest processing. The microproject yielded a total of 52 bags (40 kg per bag) sold for Php62,500.00 and generated a 93% return on cash expense (ROCE). The success of the student led to a degree Bachelor in Agricultural Technology
Keywords: ground acapulco seeds (GAS), parasitism
Citation (APA): Sapigao, K. M. A. & Espiritu, O. P. (2014). Ground acapulco (Cassia alata) seeds as potential dewormer for native chicken. NVSU Research Journal, 1(1), 5-13.Download File
Marlon B. Ocampo, Lerma C. Ocampo, and Ruben P. Soriano
The study was conducted to examine the role of various factors (presence/absence of cumulus cells, meiotic stage, oocyte source, pre-equilibration time, warming condition, method of vitrification) to establish the optimum condition for vitrification of buffalo oocytes. Survival was based on the morphological normality post-warming, completion of first meiosis and penetrability post fertilization in vitro.
In Experiment 1, survival of germinal vesicles (GV) stage cumulus-oocyte-complexes (COCs) or denuded oocytes was significantly lower than the control regardless of pre-equilibration time used except when using 10-minute exposure time. The maturation rate of vitrified oocytes was lower compared to the control. In Experiment 2, the survival of vitrified/warmed GV oocytes had no difference with the control regardless of the warming conditions used although the maturation rate was lower. Among treatments, descending trehalose concentration and exposure time appeared better than direct warming and stepwise warming with descending trehalose concentration with same exposure time. In Experiment 3, vitrification of oocytes at GV or metaphase II (M2) stage showed no difference in terms of survival and fertilizability but use of the cryotop method appeared better than the minimum drop size (MDS) method. In Experiment 4, oocyte source had no effect on the survival and fertilizability of vitrified/warmed M2 stage oocytes. In Experiment 5, the cleavage and blastocyst formation rate of vitrified/warmed oocytes was lower than the control.
The results showed that buffalo GV and M2 stage oocytes can survive vitrification either by MDS or cryotop method, complete first meiotic division, be fertilized and produce embryos although to limited extent.
Keywords: oocytes, vitrification, survival, maturation, fertilization, embryos
Citation (APA): Ocampo, M. B., Ocampo, L. C., & Soriano, R. P. (2014). Vitrification of swamp buffalo oocytes. NVSU Research Journal, 1(2), 15-24.Download File
Eladio M. Avellanoza, Marah Joy A. Nanglegan, Marla A. Hernandez, and Caroline A. Angeles
A Theses Management and Monitoring System (TMMS) was designed and implemented to enhance the recording and monitoring of undergraduate theses at the Research and Development-Management Information Systems Office of the Nueva Vizcaya State University, Bayombong, Nueva Vizcaya, Philippines. The TMMS is a customized Database Management System (DBMS) using Microsoft Access.
The TMMS was able to solve the basic problems encountered with manual and keyed-in recording since it allowed users to easily access and generate the needed information by just a few clicks and key in on a computer.
Keywords: database management system
Citation (APA): Avellanoza, E. M., Nanglegan, M. J. A., Hernandez, M. A., & Angeles, C. A. (2014). Enhancing theses recording and monitoring using a customized Database Management System (DBMS). NVSU Research Journal, 1(2), 25-33.Download File
Julieta A. Wakit and Ma. Cecilia I. Salas
On-farm evaluation for Chinese kale adaptability, productivity and quality was done by conducting a field experiment involving variety and organic fertilizer inputs as interventions in Kasibu, Nueva Vizcaya from September to December 2013.
The growth and yield performance of Kailaan and Gai Lohn were similar.
Results indicated the superiority of organic over that of inorganic fertilizer. Chicken manure (CM), vermicompost (VC) and processed chicken manure (PCM) enhanced the growth and consequently, the yield of Chinese kale.
In terms of quality, the color of both varieties were similarly rated as “like very much” and in terms of taste, both were “like moderately.” Kailaan and Gai Lohn were rated as “not bitter”.
Based on the findings of the study, Kailaan and Gai Lohn are suitable varieties of Chinese kale for planting in Kasibu, Nueva Vizcaya. For high yield and good quality Chinese kale, organic fertilizers such as CM, VC, and PCM should be applied instead of inorganic fertilizer.
Keywords: Chinese kale, organic
Citation (APA): Calub, N. P., Torres, L. G., & Yago, J. I. (2014). On-farm evaluation of Chinese kale (Brassica alboglabra Bailey) grown with organic fertilizers in Kasibu, Nueva Vizcaya. NVSU Research Journal, 1(2), 34-40.Download File
Bonimar A. Tominez and Leila M. Dela Cruz
In the world of teaching, teachers are constantly amazed by the ingenuity of their teaching; they learn to be imaginative and inventive; they make a difference in the lives of their pupils, and they get so much unreserved affection, respect and love in return. Thus, teachers must guarantee to continue cultivating their learners, to uncover their potentials and to mold them as well-rounded citizens. This study ascertained the teaching effectiveness of pre-service teachers of the Nueva Vizcaya State University, Philippines. As a descriptive-correlation study, this paper acknowledged that the domains of teaching effectiveness which include the pre-service teacher’s personality, lesson planning, content, teaching methods, classroom management, and questioning skills were associated to their demographic variables. Single pre-service teachers give their full attention to their practice teaching thus manifesting a higher level of teaching effectiveness in their usage of teaching methods. On the other hand, married pre-service teachers have bigger responsibilities other than teaching hence, their display of satisfactory teaching effectiveness. When the cooperating school is situated near the university, the pre-service teachers only exhibited a satisfactory teaching effectiveness in learning content and managing classrooms while those who were deployed to distant schools demonstrated a remarkable teaching effectiveness. Pre-service teachers who were assigned to far-off districts and schools were motivated to be highly prim and proper and considerate so as to be good models to their learners. Generally, pre-service teachers who were deployed to districts that are far from the University were enthused to be highly communicative in asking questions and in stimulating the higher order thinking skills of their learners.
Keywords: pre-service teachers, teaching effectiveness, teaching method, content, classroom management, questioning skills, lesson planning, teacher personality
Citation (APA): Tominez, B. A. & Dela Cruz, L. M. (2014). Pre-service teachers’ teaching effectiveness: The Nueva Vizcaya State University experience. NVSU Research Journal, 1(2), 41-52.Download File
Maktrong Manee and Ramil S. Rodriguez
Experiments in the laboratory and nursery were undertaken to test the allelopathic effects of Jatropha curcas and Gliricidia sepium on Zea mays L. The allelopathic effects of the two hedgerow species were assessed in terms of survival, germination, early shoot and root growth, and biomass of corn.
Fresh leaves of J. curcas and G. sepium were used to produce extracts in different concentrations that served as treatments for the laboratory experiment. Soils were collected in an agroforestry area located in Bangan Hill. These were mixed with dried leaves from the two species separately to produce different potting mixture that served as treatments for the nursery experiment.
Significant differences were observed among the treatments in the laboratory experiments. There were allelopathic effects from the prepared extracts on the germination survival, early shoot and root growth, and biomass of corn. The higher the concentration of the leaf extract from both species, the higher is the degree of observed effects on survival and early growth of corn.
Significant differences among treatments were also observed in the nursery experiments. Survival percentages of corn planted in the high amount of shredded J. curcas leaves in the potting mixture were affected, while corn in potting mixture of any amount of shredded G. sepium leaves were not affected. Delay of germination by 2-3 days was observed in corn potted in mixture with shredded J. curcas leaves while a delay of 1-2 days was observed in corn potted in mixture with shredded G. sepium leaves. Shoot length and biomass of corn planted in the mixture with less quantity of shredded J. curcas leaves were higher compared to corn planted in the mixture with higher quantity of leaves. On the other hand, shoot growth of corns planted in any amount of shredded G. sepium leaves in the potting mixture did not significantly vary. For the biomass, corn planted with fewer amounts of shredded G. sepium leaves in the mixture is significantly higher.
Keywords: database management system, allelopathy, hedgerow
Citation (APA): Manee, M. & Rodriguez, R. S. (2014). Allelopathic Effects of Two Hedgerow Species in the Survival and Early Growth of Corn (Zea mays L.). NVSU Research Journal, 1(2), 53-69.Download File
Ryan P. Manuel and Romnick L. Pascua
Mt. Palali is one of the standouts and economically critical landforms in the province of Nueva Vizcaya. It is feared that without proper understanding of biodiversity therein, resources may be exploited for short-term economic returns. To generate viable information for decision-makers, the researchers conducted a rapid survey of Palali’s floristic composition and diversity with respect to the ecological elevation and terrain of the mountain. Incidence data was recorded from 37 stations established along the major trail loacated at Barangay Maddiangat, Quezon. Alpha diversity indices (Shannon H’, Simpson’s D, Pielou’s J’) were computed and cluster analysis done to describe species, vegetation types and community diversity.
Ninety-seven (97) species including nine morphotypes in 208 encounters were counted. The most frequently observed were Shoreapolysperma (14 observation points) Lithocarpusllanosii (12), Shoreacontorta (11) Saurarialatibractea (10) Sarcandraglabra (9) and Caralliabrachniata, Cinnamomummercadoi, (8), Pityrogrammacalomelanos, Shoreapalosapis, Tristaniopsisdecorticata, all with 8 encounters. Species diversity is very high (H’ = 4.229). as well as variety of dominant species (1-D = 63.400) and distribution is highly even (J’ = 0.924).
Six (6) observation points were without forest trees, which were either converted farm lots or open areas dominated by grasses. At (~300-500 masl) Palalis’s plant community were influenced by farming and timber harvesting, while at (~1350 to ~1,717 masl) is dominated by Vaccinium, Rhododendron, Symplocos and Homolanthus. At ~1450 masl, Astronia, Melastoma, Nephenthes, Dacrycarpus become more visibly abundant. Numerous rattan species are found as well in the upper montane and sub-alpine mossy forest of Mt. Palali.
Visual observation was supported by ordination of observation points, yielding four communities. Community 1 dominated by Cinnamomummercadoi, Shorea palosapis, Shorea polysperma, Lithocarpus lanosii and Sarcandra glabra, has the most contiguous span, ranging from 655 to 857 masl. Estimated crown cover is 60%-80% along the trail allowing smaller plants to receive sunlight without much interference and attenuation while Community 2 forms the lower elevations of Palali (360 to 567 masl). Ficus species are found scattered and where shade is present, ferns like Kilob (Dicranopterislinearis) and Pneumatopterissp can be found. Community 3 are scattered somewhere between 644 to 1,601 masl. The composition is mixed, but visibly abundant are rattans, Syzygium, Astronia and Saurarialatibractea. Lastly, Community 4 is comprised of the subalpine from 1519 to the summit.
Here, the vegetation and structure are very different from the rest as it is dominated by Vaccinium, Rhododendron, Melastoma. Leptospermum and numerous mosses. These observations denote that Mt. Palaliis very diverse not only in terms of species, but also in the variety of ecosystems / plant communities found along its terrain.
Keywords: soil interpolation method, soil mapping, IDW, kriging, spline
Citation (APA): Manuel, R. P. & Pascua, R. L. (2014). A rapid floral diversity-elevation survey along the Maddiangat Trail of Mt. Palali, Nueva Vizcaya. NVSU Research Journal, 1(2), 70-76.Download File
Aldwin D. Pablo and Federico O. Perez
The study was conducted to assess the carbon stocks and estimate soil loss as indicators of ecological sustainability of major land uses in the watershed, and carbon footprints of farmer-occupants in the Barobbob Watershed at Bayombong, Nueva Vizcaya.
The area was subdivided into agroecological zones based on slopes, which was used as land mapping units. Assessment of sustainability was based on the ecological soundness of major land uses using tree species diversity, soil macro fauna, bacterial and fungal count, fertility level and soil loss as indicators.
The natural forest was ecologically sound due to:(1) potential soil loss was far below the soil loss tolerance; (2) diverse forest tree species; (3) bacterial and fungal populations were abundant; (4) good fertility status as nitrogen and potassium were present in sufficient amounts. However, the agroforestry areas failed to be ecologically sustainable because of higher soil loss than the soil loss tolerance and low fertility status.
The natural forest with a mean diversity index of 1.48 had a substantial amount of carbon with an average value of 323.19 tons C ha-1 while the agroforestry with a mean diversity index of 1.19 obtained an average carbon of 157.23 tons C ha-1.
Carbon footprints of farmer-occupants in the watershed ranged from 1.34 to 3.27 t CO2 ha-1. The firewood contributed the largest share. High income farmer-occupants emitted higher carbon than low-income farmers.
Keywords: ecological sustainability, land uses, carbon stocks, soil loss tolerance, soil macrofauna, bacterial and carbon footprints
Citation (APA): Pablo, A. D. & Perez, F. O. (2014). Ecological sustainability of land uses in the Barobbob watershed. NVSU Research Journal, 1(2), 77-89.Download File