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Articles 31 - 60 of 197
Full-Text Articles in Agriculture
Comparative Effects Of Organic-Based Seed Treatments On Seed Viability And Vigor Of Rice (Oryza Sativa L.) Varieties, Cielo Luz C. Mondejar
Comparative Effects Of Organic-Based Seed Treatments On Seed Viability And Vigor Of Rice (Oryza Sativa L.) Varieties, Cielo Luz C. Mondejar
The Philippine Agricultural Scientist
Access to high-quality rice seeds remains limited for small and marginal farmers due to high costs, while traditional rice varieties favored by many farmers often suffer from poor seed viability. Seed treatment presents a practical and low-cost approach to enhance seed performance. This study conducted 2 independent experiments to evaluate the effectiveness of 3 organic-based seed treatments: vermitea, a Trichoderma solution, and a water hyacinth decoction. In the first experiment, seeds from 4 traditional rice varieties (Redrice, Dinorado, Calatrava, and Arabon) were treated with distilled water (control) and 75% dilute solutions of each treatment. The second experiment involved different seed …
Assessing Male Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera: Crambidae), Mating Frequency Via Spermatophore Quantification, Gelyn D. Sapin, Marcela M. Navasero
Assessing Male Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera: Crambidae), Mating Frequency Via Spermatophore Quantification, Gelyn D. Sapin, Marcela M. Navasero
The Philippine Agricultural Scientist
The Asian corn borer (ACB), Ostrinia furnacalis (Guenée), has caused significant yield losses to corn due to its destructive feeding. Bt corn currently controls ACB, but it still poses a threat to Philippine traditional varieties. Random mating of ACB is essential to the insect resistance management (IRM) of Bt corn, and studying the mating behavior, specifically the mating frequency of ACB, is a critical part of understanding the IRM in the Philippines. Currently, there is no available information on the mating frequency of ACB. Here, the male and female ACB were allowed to mate at a ratio of 1 male …
Oviposition Preference Of The Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera: Crambidae), Towards Bt And Non-Bt Corn, And Under Confined Conditions, Merdelyn T. Caasi-Lit, Jessica B. Baroga-Barbecho, John David C. Cortez, Edwin A. Benigno
Oviposition Preference Of The Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera: Crambidae), Towards Bt And Non-Bt Corn, And Under Confined Conditions, Merdelyn T. Caasi-Lit, Jessica B. Baroga-Barbecho, John David C. Cortez, Edwin A. Benigno
The Philippine Agricultural Scientist
Several experiments were conducted on the ovipositional preference and behavior of the Asian corn borer (ACB), Ostrinia furnacalis (Guenée). Confirmatory tests were conducted in table cages (1.5 m2) to determine if the results would align with those obtained from experiments on semi-field (285 m2) and mini-screen cage (90 m2) spatial scales. Preference for Bt and non-Bt corn was then observed under confined conditions. Table cage test results showed similar oviposition behavior to that observed in prior studies on larger test areas. There is no preference for either Bt or non-Bt corn plants. ACB adults …
Adult Dispersal Of Field-Released Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera: Crambidae), In Northern And Southern Philippines, Mario V. Navasero, Randolph N. Candano, Gelyn D. Sapin, Wilson N. De Panis
Adult Dispersal Of Field-Released Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera: Crambidae), In Northern And Southern Philippines, Mario V. Navasero, Randolph N. Candano, Gelyn D. Sapin, Wilson N. De Panis
The Philippine Agricultural Scientist
The effectiveness of Bt corn in controlling the Asian Corn Borer (ACB), Ostrinia furnacalis Guenée, is well recognized. However, concerns persist regarding the potential development of resistance to Bt toxins by this pest. This resistance could arise from surviving ACB individuals carrying homozygous resistance alleles, potentially leading to resistant offspring if mating between resistant individuals is not prevented or minimized. To address this issue, various studies have investigated the factors that limit or facilitate resistance development. These factors include adult dispersal and mating behavior in the field, as well as ecological conditions such as weather and landscape features. However, there …
Review Of Dr. Adelina A. Barrion’S Contributions To Basic Studies On The Asian Corn Borer And A Tribute To An Outstanding Entomologist, Ireneo L. Lit Jr., Merdelyn T. Caasi-Lit, John David C. Cortez, Aimee Lynn A. Barrion-Dupo
Review Of Dr. Adelina A. Barrion’S Contributions To Basic Studies On The Asian Corn Borer And A Tribute To An Outstanding Entomologist, Ireneo L. Lit Jr., Merdelyn T. Caasi-Lit, John David C. Cortez, Aimee Lynn A. Barrion-Dupo
The Philippine Agricultural Scientist
The previous works of the late Dr. Adelina A. Barrion, a distinguished Filipino insect geneticist, on the Asian corn borer (ACB), Ostrinia furnacalis (Guenee), were retrieved. The works were reviewed and highlighted in relation to the recently funded project entitled “Basic studies on the Asian corn borer, Ostrinia furnacalis (Guenee),” funded by the Biotechnology Coalition of the Philippines in collaboration with various players in the corn seed industry. The unpublished papers of Dr. Barrion from the 1981 PCARR project entitled “Breeding for Corn Borer Resistance” were important milestones in basic studies on the ACB. Several studies conducted by her team …
Basic Studies On The Asian Corn Borer, Ostrinia Furnacalis (Guenée), Are Crucial For Insect Resistance Management For Bt Corn In The Philippines, Merdelyn T. Caasi-Lit, Aimee Lynn A. Barrion-Dupo
Basic Studies On The Asian Corn Borer, Ostrinia Furnacalis (Guenée), Are Crucial For Insect Resistance Management For Bt Corn In The Philippines, Merdelyn T. Caasi-Lit, Aimee Lynn A. Barrion-Dupo
The Philippine Agricultural Scientist
The Philippines is considered to be “at the forefront of biotech research and commercialization in Southeast Asia and a model for science-based and thorough regulatory policy in the region” (ISAAA 2016). This is evident in the country's pioneering adoption of Bt corn technology in Asia and in the effective handling and implementation of rules and regulations on biosafety and the application of transgenic crops through the regulatory function of the Bureau of Plant Industry (BPI) under the Department of Agriculture.
Temporal Decline And Spatial Heterogeneity Of Cry1ab Susceptibility In Asian Corn Borer, Ostrinia Furnacalis (Guenée), Populations In The Philippines: A Review And Synthesis Of Monitoring Data (2015–2024) [Review Article], Edwin P. Alcantara
The Philippine Agricultural Scientist
Transgenic corn expressing the insecticidal Cry1Ab protein has been widely utilized in the Philippines to control the Asian corn borer (ACB), Ostrinia furnacalis (Guenée). Continuous, long-term monitoring is critical to detect shifts in baseline susceptibility and mitigate the risk of field-evolved resistance. This study evaluated the spatiotemporal dynamics of ACB susceptibility to Cry1Ab over nine years (2015–2024). Bioassay data were collected from 12 geographically distinct field populations across the Philippines, alongside a susceptible laboratory reference strain (UPLB). To account for spatial hierarchy and temporal variance, data were analyzed using a Bayesian hierarchical multilevel model with a logit link. Baseline assessments …
Nutrient Utilization Efficiency And Antioxidant Profile Of Bc2 Abaca (Musa Textilis Née) Hybrids, Roberto Barba Jr, Antonio Lalusin
Nutrient Utilization Efficiency And Antioxidant Profile Of Bc2 Abaca (Musa Textilis Née) Hybrids, Roberto Barba Jr, Antonio Lalusin
The Philippine Agricultural Scientist
Abaca (Musa textilis Née) is an important fiber crop widely recognized for its superior tensile strength, yet its productivity remains constrained by nutrient inefficiency, poor cropping management, and climatic stresses under manual production systems. Efficient nutrient utilization and an understanding of antioxidant compositions are practically relevant to the productivity of the abaca fiber crop. However, despite the crop’s economic importance, limited studies have examined nutrient uptake dynamics and internal utilization efficiency related to fiber synthesis. This study aimed to demonstrate the nutrient utilization efficiency and antioxidant profiles of BC₂ abaca hybrids in relation to fiber yield and quality. Fiber …
Evaluation Of The Suitability Of Tomato (Solanum Lycopersicum L.) Accessions Grown In A Vertical Container System, Darel Kenth S. Antesco, Lourdes Edano Ma., Renerio Gentallan Jr, Roselyn F. Paelmo, Annalissa L. Aquino
Evaluation Of The Suitability Of Tomato (Solanum Lycopersicum L.) Accessions Grown In A Vertical Container System, Darel Kenth S. Antesco, Lourdes Edano Ma., Renerio Gentallan Jr, Roselyn F. Paelmo, Annalissa L. Aquino
The Philippine Agricultural Scientist
Growing tomatoes in vertical container systems such as hanging pots presents a promising production system for urban gardening. However, horticultural selections of tomato with traits suited for this system are still limited. The success of different genotypes grown in this system depends on the combination of morphological characters, including plant form, vegetative growth, and root development, as well as yield. This study assessed the morphological characters of 10 tomato accessions to identify those with ideal traits for this system. Results showed that some accessions possess unique traits that enhance their performance in hanging pots. Among the 10 accessions, T2 from …
From Fruit To Nut: Revisiting Pili Nut (Canarium Ovatum Engl.) Production Capacities And Value-Adding Activities In Sorsogon, Philippines, Joey Richard V. Dio, Ryan V. Dio, Dulce Corazon F. Lacson
From Fruit To Nut: Revisiting Pili Nut (Canarium Ovatum Engl.) Production Capacities And Value-Adding Activities In Sorsogon, Philippines, Joey Richard V. Dio, Ryan V. Dio, Dulce Corazon F. Lacson
The Philippine Agricultural Scientist
The value chain of agricultural products significantly influences their profitability and socio-economic contribution. This study developed a descriptive model of the pili (Canarium ovatum Engl.) nut value chain in Sorsogon, the primary producer in the Philippines, and the only province with large-scale commercial operations. Using a descriptive research approach, data were collected through purposive interviews with 15 key informants—farmers, processors, and traders—guided by Porter’s value-chain framework. Results indicate that Sorsogon produces about 3 times the quantity required daily (< 2,233 kg) by Bicol-based processors, leading to underutilization and post-harvest losses attributed to limited storage facilities and market linkages. The processing stage, which converts pili fruits into nuts and kernels, demonstrates the highest operational efficiency, while the trading stage remains constrained by limited market access. Stakeholders often perform overlapping functions, and traditional sun-drying methods remain common. Furthermore, an aging farming population, limited succession planning, and inconsistent implementation of food safety standards continue to pose challenges to industry growth. These inefficiencies result in reduced profitability and restrict expansion. Strengthening the value chain through improved processing systems, broader market integration, and streamlined production activities is necessary to enhance economic returns and support the sustainable growth of Sorsogon’s pili nut industry.
Non-Target Organisms And Terrestrial Arthropod Biodiversity In The Corn Agroecosystem: Bt Corn Beyond Acb Pest Management [Review Article], Ireneo L. Lit Jr., Merdelyn T. Caasi-Lit, Kristine O. Abenis
Non-Target Organisms And Terrestrial Arthropod Biodiversity In The Corn Agroecosystem: Bt Corn Beyond Acb Pest Management [Review Article], Ireneo L. Lit Jr., Merdelyn T. Caasi-Lit, Kristine O. Abenis
The Philippine Agricultural Scientist
Assessments of risks of modern biotechnology products to non-target organisms (NTOs) are required before a product can be registered and allowed for commercial production. For Bt-engineered plants, data from such studies become part of environmental risk or impact assessments that are reviewed before a hybrid can be registered and allowed for commercial planting. The approaches and methods vary among countries and researchers. Consequently, the choice of species and groups of organisms or guilds that are monitored or studied may range from narrow to broad and encompassing. The inevitability of adverse changes in agroecosystems, including those that involve the corn crop, …
Age-Dependent Reproductive Fitness And Behavioral Dynamics Of The Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera:Crambidae), Marcela M. Navasero, Randolph N. Candano, Maricon Dp Javier, Jethro M. Navasero, Wilson N. De Panis
Age-Dependent Reproductive Fitness And Behavioral Dynamics Of The Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera:Crambidae), Marcela M. Navasero, Randolph N. Candano, Maricon Dp Javier, Jethro M. Navasero, Wilson N. De Panis
The Philippine Agricultural Scientist
This study evaluated the effects of parental age of the Asian corn borer (ACB), Ostrinia furnacalis (Guenée), on fecundity, egg hatchability, adult longevity, and the duration of pre-oviposition, oviposition, and post-oviposition periods using arranged mating pairs aged 1 to 5 days old. Mating behavior was also observed and documented. The highest fecundity, measured by the number of egg masses and total eggs produced, was recorded in pairings of 1-day-old males and females, indicating a positive effect of young parental age. In contrast, pairings involving 5-day-old males and females resulted in the lowest egg production, demonstrating an inverse relationship between parental …
Oviposition Preference And Behavior Of The Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera: Crambidae), On Corn And Non-Corn Plants Under Semi-Field And Mini-Screen Cage Conditions, Merdelyn T. Caasi-Lit, Jessica B. Baroga-Barbecho, John David C. Cortez, Edwin A. Benigno
Oviposition Preference And Behavior Of The Asian Corn Borer, Ostrinia Furnacalis (Guenée) (Lepidoptera: Crambidae), On Corn And Non-Corn Plants Under Semi-Field And Mini-Screen Cage Conditions, Merdelyn T. Caasi-Lit, Jessica B. Baroga-Barbecho, John David C. Cortez, Edwin A. Benigno
The Philippine Agricultural Scientist
Oviposition site selection in Ostrinia furnacalis is a hierarchical, multi-stage process influenced by plant phenology and spatial context. Oviposition preferences under mini-screen cage (Sampaloc) and semi-field (BL2) conditions were evaluated to determine the effects of field size, corn developmental stage, and the presence of non-corn plants on egg deposition patterns. Females deposited significantly more egg masses on 40 DAP (pre-reproductive) corn than on early vegetative-stage plants [Sampaloc: n=437 (40 DAP), n=88 (30 DAP); BL2: n=98 (40 DAP), n=84 (30 DAP)], demonstrating a strong phenological preference, particularly in Sampaloc. The presence of non-corn plants has a negligible …
Characterization Of Adult Emergence Pattern And Eclosion Behavior Of The Asian Corn Borer, [Ostrinia Furnacalis (Guenée)] (Lepidoptera: Crambidae), Under Laboratory And Field Conditions In The Philippines, Marcela M. Navasero, Gelyn D. Sapin, Merdelyn T. Caasi-Lit, Wilson N. De Panis, Randolph N. Candano, Maricon Dp Javier, Jethro M. Navasero, Meijei T. Bangangao
Characterization Of Adult Emergence Pattern And Eclosion Behavior Of The Asian Corn Borer, [Ostrinia Furnacalis (Guenée)] (Lepidoptera: Crambidae), Under Laboratory And Field Conditions In The Philippines, Marcela M. Navasero, Gelyn D. Sapin, Merdelyn T. Caasi-Lit, Wilson N. De Panis, Randolph N. Candano, Maricon Dp Javier, Jethro M. Navasero, Meijei T. Bangangao
The Philippine Agricultural Scientist
This study focuses on understanding the emergence pattern of Asian Corn Borer (ACB), Ostrinia furnacalis (Guenee), in the Philippines vital in crafting integrated pest management schemes, including insect resistance management against pesticides and Bt protein. Although ACB adults are known to be nocturnal and primarily emerge at night, identifying critical windows of emergence for targeted management actions is essential. In the experiments conducted, the scotophase period is the preferred time for adult emergence under laboratory conditions with 248 adults (80.52%) and 60 adults (19.48%) in the photophase period. A similar trend was also observed under field cage conditions with ACB …
Movement Of The Different Larval Stages Of Asian Corn Borer, Ostrinia Furnacalis (Guenée), On Conventional Corn Hybrid Under Field Caged Conditions, Merdelyn T. Caasi-Lit, Mark Bryan A. Lontoc, Victor V. Alpuerto, Abigail P. De Leon, Jenifer Bigkas-Naungayan, John David C. Cortez, Edwin A. Benigno
Movement Of The Different Larval Stages Of Asian Corn Borer, Ostrinia Furnacalis (Guenée), On Conventional Corn Hybrid Under Field Caged Conditions, Merdelyn T. Caasi-Lit, Mark Bryan A. Lontoc, Victor V. Alpuerto, Abigail P. De Leon, Jenifer Bigkas-Naungayan, John David C. Cortez, Edwin A. Benigno
The Philippine Agricultural Scientist
Larval dispersal is crucial in pest population establishment in crop fields. The movement of Ostrinia furnacalis (ACB) larvae within corn plots was observed to determine which factors affect larval dispersal in the field. Conventional corn plots (3 rows, 0.70 m apart x 9 plants, 0.20 m apart) were artificially infested with different combinations of larval age and pest density. The distributions of larvae were recorded through destructive sampling at 4, 8, 12, and 16 days after infestation (DAI). The behavior of ACB from the time the hatching larvae break open the egg mass shell to ballooning to start actual movement …
The Effect Of Corn Event Mir162 And The Triple Stacked Hybrid, Bt11 X Mir162 X Ga21, On Key Non-Target Organisms Of Corn, Ireneo L. Lit Jr., Merdelyn T. Caasi-Lit, Kristine O. Abenis, Edwin A. Benigno
The Effect Of Corn Event Mir162 And The Triple Stacked Hybrid, Bt11 X Mir162 X Ga21, On Key Non-Target Organisms Of Corn, Ireneo L. Lit Jr., Merdelyn T. Caasi-Lit, Kristine O. Abenis, Edwin A. Benigno
The Philippine Agricultural Scientist
Assessments of environmental risks, especially to non-target organisms, are required before genetically modified plants are approved for commercial production. Incorporated genes or traits, whether as single events or stacked or combined with other traits, are treated separately. In compliance with Philippine regulations, confined field trials were conducted to evaluate possible effects of corn event Maximus MIR162 and triple stacked corn hybrid Bt11 x MIR162 x GA21 on non-target arthropods from August 2011 to January 2012 in Laoac, Pangasinan, and Tampakan, South Cotabato. Visual counts and opportunistic sampling, sweep net sampling, pitfall traps, and sticky traps were used at each sampling …
Influence Of Varying Levels Of Lactiplantibacillus Plantarum Inoculant On The Physicochemical Characteristics And Degradation Kinetics Of Corn Silage, Christian V. Lualhati, Kimberly Turaja, Le Chan P. Yu, Jonalyn M. Sandro, Angelica Maghirang Maria, Jimmy C. Espina Jr., Cedric M. Nerona, Reynald D. Amido, Mary Rose De Guia, Gerald Guadayo, Menandro M. Loresco, Arnel N. Del Barrio
Influence Of Varying Levels Of Lactiplantibacillus Plantarum Inoculant On The Physicochemical Characteristics And Degradation Kinetics Of Corn Silage, Christian V. Lualhati, Kimberly Turaja, Le Chan P. Yu, Jonalyn M. Sandro, Angelica Maghirang Maria, Jimmy C. Espina Jr., Cedric M. Nerona, Reynald D. Amido, Mary Rose De Guia, Gerald Guadayo, Menandro M. Loresco, Arnel N. Del Barrio
The Philippine Agricultural Scientist
This study evaluated the effects of Lactiplantibacillus plantarum as an inoculant on the physical (color, odor, texture), chemical characteristics (pH, total soluble sugars [TSS], Flieg point [FP], dry matter [DM], organic matter [OM], ash, crude protein [CP], neutral detergent fiber [NDF], acid detergent fiber [ADF], and hemicellulose), and fermentation kinetics of corn silage. Treatments were 0% (T1), 1% (T2), 2% (T3), and 3% (T4) concentration of L. plantarum applied to corn before ensiling for 21 d. Afterwards, an in situ experiment was immediately conducted to test the digestibility of corn silage at 3, 6, 12, 24, 48, and 72 h …
A Co-Design Approach To Integrating Gender Into The Cacao Value Chain In Davao City, Philippines, Mia Barbara Aranas, Aileen Lapitan, Mitchiko Lopez, Nico Jayson Anastacio, Canesio Predo, Mara Faylon, Emmanuel Flores, Claire Estelle Cruz, Anjelyn Joy Enong
A Co-Design Approach To Integrating Gender Into The Cacao Value Chain In Davao City, Philippines, Mia Barbara Aranas, Aileen Lapitan, Mitchiko Lopez, Nico Jayson Anastacio, Canesio Predo, Mara Faylon, Emmanuel Flores, Claire Estelle Cruz, Anjelyn Joy Enong
The Philippine Agricultural Scientist
The specific needs and challenges of women and their contributions are often not integrated when developing interventions and policies targeted to improve agricultural value chains. Therefore, this study developed a codesign approach to creating solutions to improve gender relations in agri-food value chains. Specifically, it focused on the cacao value chain in Davao City, which is located in the southern Philippines. Co-design is a highly participatory approach in which solutions are designed with, and not just for, the people who have lived experiences of the problems being addressed. The approach emphasizes understanding gender-related barriers and opportunities to inform government interventions …
Productivity Of Lowland Rice (Oryza Sativa L.) As Affected By The Integration Of Nutrio® Biofertilizer, Emil John Cabrera, Cathrene Amante, Virginia Padilla
Productivity Of Lowland Rice (Oryza Sativa L.) As Affected By The Integration Of Nutrio® Biofertilizer, Emil John Cabrera, Cathrene Amante, Virginia Padilla
The Philippine Agricultural Scientist
Recent developments in rice cultivation in the Philippines are integrating sustainable methods in production systems to boost productivity and safeguard environmental integrity. An example of this is the use of biofertilizers such as Nutrio®, a microbial-based foliar fertilizer that promotes nitrogen fixation and the production of plant growth-promoting hormones. Nutrio® has been tested for sugarcane and is being explored for rice cultivation applications to maximize its utilization and benefits. This study aimed to assess the effects of Nutrio® biofertilizer on rice production in selected farms during the 2019 wet season and the 2020 dry season in …
Forecasting And Assessment Of Air Quality Dynamics In Northeast India Using Machine Learning Models, Kumar Shubham, Gopikrishnan T, Anshuman Singh
Forecasting And Assessment Of Air Quality Dynamics In Northeast India Using Machine Learning Models, Kumar Shubham, Gopikrishnan T, Anshuman Singh
The Philippine Agricultural Scientist
This study investigated air quality dynamics in Northeast India, a region with unique terrestrial features, including the Eastern Himalayas. While air quality varies across districts, pollution impacts the entire area. Northeast India’s rich ecology is crucial for Himalayan climate regulation. Robust air quality monitoring and pollution control are essential to preserve environmental balance. This work focused on forecasting emissions of aerosols, SO2, NO2, CO, HCHO, O3, and CH4 primarily associated with human activities. Utilizing data from the Tropospheric Monitoring Instrument (TROPOMI) satellite instrument from 2019 to 2023, a 9-mo forecast was conducted using …
Gendered Differences In The Implementation Of A Rice-Based Enterprise Program In Sariaya, Quezon Province, Philippines, Imelda Dg Olvida, Nico Jayson C. Anastacio, Paul Jersey G. Leron
Gendered Differences In The Implementation Of A Rice-Based Enterprise Program In Sariaya, Quezon Province, Philippines, Imelda Dg Olvida, Nico Jayson C. Anastacio, Paul Jersey G. Leron
The Philippine Agricultural Scientist
This study examined gendered differences in the experiences of local farmers in Sariaya, an agricultural municipality in Quezon Province, Philippines. Using the Harvard Analytical Framework, this paper aimed to provide insights into how gender influences the experiences of local farmers under the Rice Business Innovation System (RiceBIS) Community Program of the Department of Agriculture - Philippine Rice Research Institute (DAPhilRice). A qualitative approach was employed using data from focus group discussions and key informant interviews. Thematic analysis was used to identify emerging themes on the different gendered differences in the roles, resource access, needs, and challenges of local farmers in …
Three New Varieties Of Hoya Ilagiorum (Kloppenburg, Siar & Cajano), Maria Luisa D. Guevarra, Jennelyn C. Bengoa, Gerlie P. Antesco
Three New Varieties Of Hoya Ilagiorum (Kloppenburg, Siar & Cajano), Maria Luisa D. Guevarra, Jennelyn C. Bengoa, Gerlie P. Antesco
The Philippine Agricultural Scientist
Three new varieties of Hoya were registered to the Germplasm and Technology Release and Registration Office of the Institute of Plant Breeding, College of Agriculture and Food Science, University of the Philippines Los Baños and the National Seed Industry Council, Bureau of Plant Industry, Department of Agriculture in 2020 and 2023, respectively. These are open-pollinated (OP) segregants of Hoya ilagiorum (Kloppenburg, Siar & Cajano) that were generated in 2010. Evaluation of OP seedlings started in 2012 and the selection of promising segregants yielded 3 varieties, namely ‘Moonlight’, ‘Sunkissed’, and ‘Starburst’. ‘Moonlight’ has a dainty creamy yellow inflorescence consisting of 31 …
Morphoanatomy And Phenoplasticity Of Cardamine Hupingshanensis (Brassicaceae) Under Cadmium Stress, Yafen Han, Florfe M. Acma, Maria Melanie M. Guiang, Chris Rey M. Lituanas, Fulgent P. Coritico, Victor B. Amoroso
Morphoanatomy And Phenoplasticity Of Cardamine Hupingshanensis (Brassicaceae) Under Cadmium Stress, Yafen Han, Florfe M. Acma, Maria Melanie M. Guiang, Chris Rey M. Lituanas, Fulgent P. Coritico, Victor B. Amoroso
The Philippine Agricultural Scientist
Using a soil culture method, this study investigated the morphoanatomical responses and phenotypic plasticity of Cardamine hupingshanensis (Brassicaceae) under different cadmium (Cd) concentrations. Root morphological indices initially increased at low Cd levels but decreased as Cd concentrations rose, exhibiting a low-promoting and high-inhibiting effect. Leaf morphology and biomass peaked at 5 or 10 mg kg-1 Cd before decreasing at higher concentrations but were still significantly higher than the control (P < 0.05). Anatomical structure analysis revealed no significant difference at 5 mg kg-1 Cd; however, at ≥ 100 mg kg-1 Cd, epidermal and spongy tissue thickness differed significantly from the control. Correlation analysis indicated a significant positive correlation between …
Implementation Of Organic Rice Farming Based On Local Wisdom In Bali Province, Indonesia, Gede Sedana, Ketut Wirawan, Naori Miyazawa
Implementation Of Organic Rice Farming Based On Local Wisdom In Bali Province, Indonesia, Gede Sedana, Ketut Wirawan, Naori Miyazawa
The Philippine Agricultural Scientist
The Green Revolution has significantly contributed to agricultural development. However, it has also caused environmental damage due to excessive use of agricultural inputs and land exploitation. To promote sustainability in line with the Sustainable Development Goals (SGDs), organic farming has been recommended to improve and maintain agroecosystems. In Bali Province, Indonesia, the concept of Tri Hita Karana (THK), a form of local wisdom, has guided farmers in implementing the System of Rice Intensification (SRI) technique introduced by the government. This study explored how organic rice farming integrates local wisdom, assessed farmers’ knowledge and attitudes towards SRI, and examined government support …
Assessment Of Drought Tolerance In Mung Bean [Vigna Radiata (L.) Wilczek] Through Phenology, Growth, Protein Yield, And Cluster Heatmap Analysis, Rafiqul Islam, Jamil Hossain, Shamsul Huda, Mohammad Golam Azam, Faruk Hossain, Aktar Uz Zaman, Safiqul Moula, Nasir Uddin Ahmed, Jamal Hossain, Ayman El Sabagh, Mohammad Sohidul Islum
Assessment Of Drought Tolerance In Mung Bean [Vigna Radiata (L.) Wilczek] Through Phenology, Growth, Protein Yield, And Cluster Heatmap Analysis, Rafiqul Islam, Jamil Hossain, Shamsul Huda, Mohammad Golam Azam, Faruk Hossain, Aktar Uz Zaman, Safiqul Moula, Nasir Uddin Ahmed, Jamal Hossain, Ayman El Sabagh, Mohammad Sohidul Islum
The Philippine Agricultural Scientist
Mung bean [Vigna radiata (L.) Wilczek] cultivation is challenging under the changing climate as less precipitation during the summer season, which is becoming increasingly common, results in soil moisture deficiency and affects production especially at the early growth stages. Hence, this study was conducted to assess the phenology, growth, and protein yield traits of mung bean related to drought tolerance. Eight mung bean genotypes were grown in pots inside a rain-out shelter under well-watered (WW) and water-deficit (WD) conditions. These genotypes included four water stress-tolerant genotypes: G-1 (BARI Mung-8), G-2 (BMX-010015), G-3 (BMX-08010-2), and G-4 (BMX-08009-7), as well as four …
Comparing Conventional And Modified Cage Wheel Performance In Lowland Conditions, Rosalinda Abad, Michael Duldulao, Arthur Fajardo
Comparing Conventional And Modified Cage Wheel Performance In Lowland Conditions, Rosalinda Abad, Michael Duldulao, Arthur Fajardo
The Philippine Agricultural Scientist
In agricultural production, significant cost consumption from tillage due to high energy input and low work performance may be reduced by improving the design of hand tractor components, specifically tractive devices. This study aimed to compare the field performance of conventional and modified cage wheels for hand tractors in terms of field efficiency (FE), wheel slip, and fuel consumption (FC). Using the Philippine standard methods of testing for walking-type tractors and a two-tailed t-test to analyze the data, results showed that the modified cage wheel had an FE of 90.09%, wheel slip of 7.78%, FC of 0.22 L/h, and FC …
Rehydration Kinetics Of Green Pea Grains Dried At Different Microwave Powers, Serap Kayisoglu
Rehydration Kinetics Of Green Pea Grains Dried At Different Microwave Powers, Serap Kayisoglu
The Philippine Agricultural Scientist
In this study, both untreated and pre-treated green pea grain samples dried at different microwave output powers (90, 180, and 360 W) were rehydrated at three different temperatures (30ºC, 50ºC, and 70ºC). The rehydration kinetics of dried peas were analyzed using both the Peleg and the first-order kinetic models. Observations revealed that the Peleg model exhibited better agreement with the experimental data. As both microwave power and rehydration temperature increased, the rehydration capacity also increased in both pre-treated and untreated peas. The highest moisture content was observed after rehydration in pre-treated peas dried at 360 W microwave power (2.80 g …
Morphological And Physiological Changes Of Katuray (Sesbania Grandiflora) During Seed Maturation [Research Note], Alangelico San Pascual, Lucille Elna De Guzman, Maurice Gravidez, Elijah Estante
Morphological And Physiological Changes Of Katuray (Sesbania Grandiflora) During Seed Maturation [Research Note], Alangelico San Pascual, Lucille Elna De Guzman, Maurice Gravidez, Elijah Estante
The Philippine Agricultural Scientist
Katuray (Sesbania grandiflora), whose flowers are consumed as steamed vegetables, is an important green manure crop in the Philippines. Understanding different processes leading to seed maturity can aid in determining S. grandiflora’s seed quality, preventing premature harvesting for seed increase, ensuring efficient propagation and production of seedlings, and breeding new varieties of this crop. Multiple flowers were tagged, and three to five pods were collected five days after anthesis (DAA) and at a five-day interval thereafter until 100% germination was achieved. Seed size, moisture content (MC), dry weight, germination percentage, and embryo development were observed and recorded. Seed length was …
Comparative Analysis Of Household Food And Nutrition Security In Selected Philippine Urban And Rural Households During The Covid-19 Pandemic, Jay-Al Reyes, Julieta Delosreyes
Comparative Analysis Of Household Food And Nutrition Security In Selected Philippine Urban And Rural Households During The Covid-19 Pandemic, Jay-Al Reyes, Julieta Delosreyes
The Philippine Agricultural Scientist
This study analyzed the food and nutrition security of selected urban and rural households in Pili, Camarines Sur, Philippines during the COVID-19 pandemic. It determined the prevalence of food insecurity among the selected urban and rural households, analyzed the determinants of food insecurity in these households, determined the prevalence of malnutrition, and assessed the relationship between the households’ food security and nutrition security. Primary data from a survey of 185 urban and rural households and secondary data from the Electronic Operation Timbang Plus (e-OPT) Tool were used to determine the prevalence of food insecurity using the Food Insecurity Experience Scale …
Bioactivity And Synergism Of Tagpo (Ardisia Tomentosa) Molluscicidal Extracts, Darwin C. Gomez, Grechelle Socias, Rosemarie Galanza, Florlyn C. Gayas Ma., Fe T. Piedad, Brian John Sarno
Bioactivity And Synergism Of Tagpo (Ardisia Tomentosa) Molluscicidal Extracts, Darwin C. Gomez, Grechelle Socias, Rosemarie Galanza, Florlyn C. Gayas Ma., Fe T. Piedad, Brian John Sarno
The Philippine Agricultural Scientist
Population control of golden apple snails (GAS, Pomacea canaliculata) is beneficial in rice farming; however, the associated control measures can be expensive and time-consuming. Currently, farmers use synthetic molluscicides such as niclosamide to control GAS infestation, but this has some drawbacks. For example, niclosamide has broad toxicity to non-target organisms and negatively affects the growth of rice seedlings. Plant extracts with potent bioactivity and low toxicity to non-target organisms are attractive alternatives to synthetic molluscicides. In this study, the bioactivity of the crude fruit extract of tagpo (Ardisia tomentosa) was assessed against GAS and tilapia (Oreochromis niloticus) fries. The potential …