Browsing by Author "Aban, Jomar L."
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Item Advancing sustainable agriculture through beneficial microbes:(Research and Innovation Department,Khon Kaen University, Thailand, 2026-05) Aban, Jomar L.; de Guzman, Allen Dale L.; Escobal, Mark Joseph B. ; Estal, Karen Nicole F.; Milanes, Nathanael Alexis S.; Sagun, Analyn V.This is a review of the use of effective microorganisms (EM) in sustainable agriculture to improve soil quality, increase crop yields, and control plant diseases. This review aims to contribute to understanding sustainable agriculture using microbes for our benefit by integrating microbial physiology and synthetic microbial innovations, with respect to community-level microbial interactions. Using a literature search strategy, the physiological mechanisms by which EM may enhance soil fertility through improved nutrient cycling and increased nutrient availability to plants, and/or by creating or modifying soil structure to support root growth, were described. Results showed that EM also increase the ability of plants to grow despite biotic stressors, such as soil-borne pathogens, through both the creation of antimicrobial compounds and competitive exclusion. Microbes also enhance plant tolerance to abiotic stressors, such as water loss from drought or salt accumulation, by altering how plants respond physiologically and by retaining soil moisture. This could be achieved by using effective microbes in agriculture via synthetic microbial communities (SynCom), which will enable greater resource efficiency, a lower environmental footprint, and contribute to achieving food security while addressing current global issues such as climate change and growing populations. However, there is still much to be learned about the long-term ecological implications, scalability, regulatory environments, and socio-economic feasibility of agricultural technologies based on microorganisms and SynComs, especially in developing and climate-vulnerable countries. Therefore, a comprehensive review that links microbial physiology, SynCom design, empirical data from crop studies, and future paths to innovation is both timely and needed.Item Diversity, characteristics, and altitudinal distribution of pteridophytes in Manleluag Spring Protected Landscape (MSPL), Mangatarem, Pangasinan, Philippines(Prince of Songkla University, 2026-02) Aban, Jomar L.; Fajardo, Weenalei T.; Maddumba, Helen A.; Bawingan, Paulina A.The Manleluag Spring Protected Landscape (MSPL) was included among protected areas under the NIPAS Act of 1992. It covers 12% of the forestlands of Mangatarem, Pangasinan, which harbors some endemic unique and threatened species of plants and animals, including ecologically important Pteridophyte species. The undisputed ecological and economic contributions of the pteridophytes at the global and local scale were the basis for the conduct of this study. It aimed to identify the different Pteridophyte species present in selected forest sites of MSPL; to prepare voucher herbarium specimens as inventorymaterials for future conservation purposes; to determine Pteridophyte zones based on different altitudinal zones; and to assess and compare the species richness, evenness, and diversity of the different sites at MSPL. Fourteen fern species under seven (7) genera and five (5) families were collected, identified, and classified, constituting 1.35% species richness, 4.86% genera richness, and 12.82% familial richness compared to the total Pteridophyte richness in the Philippines. The biodiversity and species richness were relatively low due to several dominant Pteridophyte species in the different study sites and the classification of Manleluag as a secondary forest by the Haribon Foundation. Pteridophyte zones were also observed. Some families dominated low altitudes, some preferred mid-altitudes, and others favored high altitudes. The researchers highly recommend intensified implementation of the Manleluag Spring Protected Landscape (MSPL) management plan and continuous monitoring of the diversity and abundance of different Pteridophyte species.Item In vitro growth-promoting properties of non-dominant root symbiotic fungi (Nd-rsf) from Drynaria quercifolia l. and their effects on psb rc10 rice (Oryza sativa L.)(Department of Science and Technology, 2020-09) Aban, Jomar L.The use of microorganisms as an environmentally safe method for agricultural crop production and biocontrol has increased in recent years but is still considerably underexploited. This study explored the potential growth-promoting properties of non-dominant root symbiotic fungal (ND-RSF) isolates from Drynaria quercifolia L. and their effects on rice. The five molecularly identified ND-RSF isolates induced indole-3-acetic acid (IAA) production spectrophotometrically at 530 nm. The Trichoderma scalesiae isolate produced the highest IAA per unit volume of culture broth and the highest IAA per unit of dry weight. All five ND-RSF isolates have phosphate solubilization activity. Three ND-RSF isolates significantly increased the total length of paclobutrazol, a gibberellic acid (GA) inhibitor, treated rice plants. The fresh weight of rice inoculated with Aspergillus brunneoviolaceus is significantly heavier than the negative broth and water control. The dry weight of rice inoculated with Aspergillus aculeatus, Aspergillus japonicus, and Aspergillus brunneoviolaceus are significantly higher compared to the positive controls (20 PPM GA, 20 PPM IAA, and non-paclobutrazol treated rice seedlings). The results indicate the ability of these three Aspergillus isolates to synthesize the GA hormone. The ability of these ND-RSF isolates to produce growth-promoting hormones auxin and GA, plus their ability to solubilize inorganic phosphate are evidence to their potential growth-promoting abilities toward their host plant. This present study also implies that these ND-RSF can be growth-promoting mutualists to rice.Item Knowledge, attitudes, and practices on the six common teaching strategies of tertiary level teachers and students:(The International Journal of Interdisciplinary Educational Studies, 2020) Aban, Jomar L.; Abubo, Rosita P.; Sario, Criselda G.Determining the knowledge, the attitudes, and the practices on the different teaching pedagogies perceived by teachers and students are relevant to ensure authentic learning. This research is a short cross-sectional case study that utilized an educational-quantitative-descriptive design. Results showed that both the teachers and students have moderate knowledge on the six teaching strategies, namely: 1) lecture type of teaching strategy; 2) cooperative type of teaching strategy; 3) inquiry-based teaching strategy; 4) mastery type of teaching strategy; 5) learning with emphasis on communication skills; and 6) project-based teaching strategy. Results further showed that the respondents agree in the positive functionality in all the pedagogies (lecture type μ = 2.91; cooperative type μ = 3.00; inquiry-based μ = 2.90; mastery type μ = 2.68; learning with emphasis on communication skills μ = 2.76; and project-based μ = 2.87). In terms of the practice of these teaching strategies, it showed that lecture method is still the most frequently utilized compared to the rest of the student-centered pedagogies. Based on the results, a newly proposed teaching model is crafted. In this model, all six teaching strategies should be used in varied frequency of utilization. The new synergistic teaching strategy model is constructed to point out the need to utilize not only the lecture method but also the other student-centered approaches so that authentic learning will transpire and quality education is achieved.Item Meteorology (SESE 104)(Don Mariano Marcos Memorial State University - North La Union Campus, 2020) Aban, Jomar L.Item Methodological considerations in assessing metformin-associated vitamin B12 deficiency(SageJournals, 2026) Halog, Evangeline A.; Mangaoang, Ray L.; Aban, Jomar L.Item Microbiology and Parasitology (SESE 116)(Don Mariano Marcos Memorial State University - North La Union Campus, 2021) Aban, Jomar L.