Journal articles published externally
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14578/2
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Item Mangotayo!: A sustainable smart agriculture model for mango industry upliftment in Davao del Sur, PhilippinesPerito, Rhea Mae L.; Surdella, Karl Vincent A.; Restauro, Richie Boy D.; Panaligan, Nel R.; Origines, Domingo V., Jr.; Aquino, Eduardo F.; Aguilar, Razel Ann G. (Science Research Society, 2025)Mango production in the Philippines ranked seventh globally, producing high-quality mangoes and supplying different countries. However, from 2000 to 2020, the Philippine mango sector saw a steady reduction in all industry performance metrics, such as production volume, productive area, yield per unit area, and yield per tree. Furthermore, the export of mangoes is not doing as well as in earlier decades. Other problems encountered by many farmers specifically small-scale farmers are lack of pest control and nutrient management, poor induction and flowering intensity, the lack of farm-to-market roads, and low farm-gate prices. Responding to these issues, the Mango Tayo! Program developed an AI-based Smart application for mango production management, utilizing cutting-edge technologies in smart agriculture. Thus, community engagement and activities were conducted to capacitate the women and men mango growers and contractors in Digos City using the developed technology. The program was found to be successful in achieving its objectives—enabling the community partners to use cutting-edge technology in farming.Item Performance of corn (Zea may Linn.) to the application of mudpress-based organic fertilizerMacarayan, Olympio B.; Campaner, Alexander M.; Mercado, Marcelina Fe G.; Fuentes, Augie E.; Revilla, Nila Nanette S. (Davao del Sur State College (Formerly SPAMAST Digos Campus), 2013)The developed mudpress-based organic fertilizer (MBOF) had been tested to corn following the Fertilizer and Pesticide (FPA) protocol. The trial was conducted in Brgy. Dulangan, Digos City. Corn ear length and number of corn ears per plant were not affected by the fertilizer application. However, plant height, ear diameter, fresh weight of corn ear, dried weight of corn ear, weight of kernel after drying and computed yield were significantly improved by the application of inorganic and MBOF or their combinations. Positive response of corn was noted among these variables, thus, MBOF can be utilized as an ideal organic fertilizer.Item Effect of GREENTEC organic fertilizer on the yield of pechay (Brassica chinensis)Macarayan, Olympio B.; Campaner, Alexander M. (Southern Philippines Agri-business and Marine and Aquatic School of Technology, 2004-01)This study was conducted in the farmer's field of Barrio Pampanga, Lanang, Davao City from the period February to April 2001. It aimed to generate information on the agronomic effectiveness of 20 bags per hectare GREENTEC organic fertilizer and to evaluate the growth and yield response of pechay to different rates and combinations of GREENTEC organic and inorganic fertilizers. Results showed that growth of pechay in T5 (20 bags per hectare of GREENTEC organic fertilizer alone) was comparable to that in T2 (Ammophous - 3 bags/ha + Ammosul -12 bags/ha + Muriate of Potash-0.5 bags/ha), T3 (Amorphous -11/2 bags/ha + Ammosul - 6 bags/ha + Muriate of Potash - 0.5 bag/ha; T4 (T3 + T5) and T6 (T2 + T5) but much higher compared to T1 (no fertilizer). The yield of pechay in T5 was comparable to that of T2 and T3 but significantly higher compared to the yield of pechay in T1. By mixing 20 bags GREENTEC organic fertilizer per hectare with inorganic fertilizer rates in T2 and T3, highly significant increase in yield of pechay was observed (T6 and T4).Item Kappaphycus dripping enhance seed germination and production of hybrid rice (PSBRc72H – Mestizo 1)Agudera, Juan P., Jr.; Caballero, Graciela L.; Revilla, Nila Nanette S.; Gliocam, Mariz (Southern Philippines Agri-Business and Marine and Aquatic School of Technology, 2013)This study was conducted in SPAMAST-CAS, Matti, Digos City and at New Ilocos, Magsaysay, Davao del Sur. The general objective of the study was to evaluate the germination, growth and yield of PSBRc72H as influenced by different levels of Kappaphycus Drippings (KD). Findings of the study revealed that hybrid rice seeds soaked for 12 hours with 20 ml of KD per liter of water enhanced germination to 86.67%. KD as foliar fertilizer improved the agronomic characteristics such as plant height in cm (45 DAT), number of tillers per hill (60 DAT) and number of productive tiller per hill; and yield components such as number of filled spikelets per panicle and 1,000 seed weight (g) thereby increasing the grain yield (t/ha) of hybrid rice. KD did not influence the length of panicle (cm).Item Seaweed culture as a livelihood source: A case in Barangay Bato, Sta. Cruz, Davao del SurBacaltos, Della Grace G.; Revilla, Nila Nanette S.; Noel, Helen W.; Antonio, Emily S.; Gultiano, Joven O.; Besas, Jesebel (Southern Philippines Agri-Business and Marine and Aquatic School of Technology, 2004)As an offshoot of the Technology Innovation, Promotion, and Commercialization Program (TIPCP) initiated by Land Bank of the Philippines and DOST-XI, this study was conducted to feature actual seaweed culture practices in barangay Bato, Sta. Cruz, Davao del Sur. This initiative may be a way to provide inputs for the development of strategies for greater seaweed production. Specifically, the study aims to identify variations in culture practices, determine production, and provide venue for extending assistance to seaweed growers. Purposive sampling was done and 73% of the actual seaweed growers in the site were interviewed. Results show that most culture practices of seaweed growers in the study site vary from the recommended ones. Volume of seaweed production, as declared by the respondents, is slightly low but not quite far from the values recorded for the seaweed farms in Western Mindanao. It was worth note taking that more than half of the seaweed growers in barangay Bato finance the farms they operate and the rest are assisted by buyers. This may call for a need of a sound financing scheme by funding institutions. Similarly, the low production, in terms of volume and income, may also be an important concern wherein interventions for technical assistance and marketing strategy have to be pursued.Item Distribution and ecology of metapocyrtus (Metapocyrtus) ged Cabras & Medina, 2021 in Mindanao, PhilippinesPatano, Romeo R., Jr.; Mohagan, Alma B.; Ponce, Amy G.; Guiang, Maria Melanie M.; Malinao, Rodceal; Pescuela, Gretl Rae P.; Coritico, Fulgent P. (Department of Science and Technology, 2023-02)Metapocyrtus (Metapocyrtus) ged Cabras & Medina, 2021 is a Mindanao-endemic species known only in Davao del Sur. Here, we recorded the species first in Bukidnon and the Cotabato region. Moreover, we also provide ecological notes of the species specifically the identities of its food plants, description of its habitat, and potential threats.Item Locating-hop domination in graphsCanoy, Sergio R., Jr; Salasalan, Jemma P. (Kyungpook National University, 2022)A subset S of V (G), where G is a simple undirected graph, is a hop dominating set if for each v ∈ V (G) \ S, there exists w ∈ S such that dG(v, w) = 2 and it is a locating hop set if NG(v, 2) ∩ S 6= NG(v, 2) ∩ S for any two distinct vertices u, v ∈ V (G) \ S. A set S ⊆ V (G) is a locating-hop dominating set if it is both a locating-hop and a hop dominating set of G. The minimum cardinality of a locating-hop dominating set of G, denoted by γlh(G), is called the locating-hop domination number of G. In this paper, we investigate some properties of this newly defined parameter. In particular, we characterize the locating-hop dominating sets in graphs under some binary operations.Item Classification system of Trichoderma culture grown in coco-water based on RGB using TensorFlow with prototypeAlba, Felomino (Elsevier, 2022-07)The Trichoderma Classification system based on color code texture of potato dextrose agar solid (PDA) using TensorFlow with Prototype is a desktop application system that can classify the solid Trichoderma whether good or contaminated and determine the healthy ready to harvest. This desktop application system would develop to follow the standard of Quality Control of the Trichoderma laboratory and to automate the manual process of the classification in time for harvest. From the series of testing of Trichoderma Classification system based on color code texture of potato dextrose agar solid (PDA) using TensorFlow with Prototype, the proponent concludes that in creating the desktop application system it must be tested first to know if it was working well or not. As a result, when it comes to final implementation, there will be fewer issues. As of now, the desktop application system was functioning.Item A variant of hop domination in graphsCanoy, Sergio R., Jr.; Salasalan, Gemma P. (New York Business Global, 2022)Let G be a connected graph with vertex and edge sets V (G) and E(G), respectively. A set S ⊆ V (G) is a hop dominating set of G if for each v ∈ V (G) \ S, there exists w ∈ S such that dG(v, w) = 2. A set S ⊆ V (G) is a super hop dominating set if ehpnG(v, V (G) \ S) ̸= ∅ for each v ∈ V (G) \ S, where ehpnG (v, V (G) \ S) is the set containing all the external hop private neighbors of v with respect to V (G) \ S. The minimum cardinality of a super hop dominating set of G, denoted by γ s h (G), is called the super hop domination number of G. In this paper, we investigate the concept and study it for graphs resulting from some binary operations. Specifically, we characterize the super hop dominating sets in the join, and lexicographic products of graphs, and determine bounds of the super hop domination number of each of these graphs.Item Severity of bacterial leaf blight disease and yield of PSBRc72H (Mestizo1) as influenced by cultural practicesAgudera, Juan P., Jr.; Capili, Lolito N. (Southern Philippines Agri-Business and Marine and Aquatic School of Technology, 2013)A study on the severity of bacterial leaf blight disease (Xanthomonas oryzaepv. oryzae) and yield of PSBRc72H (Mestizo 1) as influenced by cultural practices was conducted at the Central Mindanao University Agricultural Experiment Station (AES), University Town, Musuan, Bukidnon from July- November 2006 to identify combinations of different cultural practices that could provide conditions unfavorable to bacterial leaf blight disease, their effects on the yield and agronomic characteristics; and correlate the different cultural practices, agronomic characteristics, yield components, severity of bacterial leaf blight the yield. The applications of controlled irrigation practices such as applied once a week, saturated and intermittent, any of the four NPK rates (80- 60-120, 100-60-120, 80-80-140 and 100-80-140) and planting at wider distances (20 cm x 30 cm and 30 cm x 30 cm) provided conditions unfavorable to bacterial leaf blight disease. Yield was higher if applied with continuous irrigation and planted 20 cm x 20 cm and 20 cm x 30 cm than applied with controlled irrigation which was intermittent, saturated and once a week and planted at wider distance (30 x 30 cm). Applications of any of the four NPK rates (80-60-120, 100-60-120, 80-80-140 and 100-80-140) did not affect the yield. Bacterial leaf blight disease accounted 33.49%; cultural practices 10.29 %; the agronomic characteristics 40.87%; and the yield components 8.78% respectively, on the variation in yield.