04. DSSC External Publications (Journals, Books, Conference Proceedings)
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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 Identifying suitable sites for pump irrigation system from open source and shallow tube well in selected areas of Davao Del Sur through geographic information system-based water resources assessmentTrondillo, M. J. F.; Generallao, I. C .; Valleser, R. A. R.; Lopez, M. T.; Janson, A. Z., Jr.; Bejarasco, J. A.; Toriales, I. R., Jr. (2019-05)This paper features the Geographic Information System (GIS) in identifying suitable sites for small scale irrigation projects (SSIP) particularly pump irrigation system from open source (PISOs) and shallow tube well (STW) through water resource assessment. The development of GIS-based assessment model for SSIP and resource map in aid of SSIP planning and development is limited in some municipalities. To develop a reliable GIS-base framework, the ArcGIS tool and spatial method was used in compiling specific factors with field analysis and developing regional resource map for SSIP. The results showed that STW in Digos City and Municipality of Hagonoy is 117 units and 17 units respectively. The average water depth in existing STW is within the 6.5 meters with capacity to irrigate 3 to 5 hectares per unit, low investment with high water use efficiency and simple to operate. It was found out that most STW is provided by Department of Agriculture-Regional Field Office XI and Local Government Units. The STW is suitable for Digos City with an area of 379.32 hectares. While the PISOS were identified with different range of pump horsepower. There are 10 units of PISOS in Digos City and 15 units in Hagonoy mostly provided by National Irrigation Administration-XI. It was found out that in Digos City the 1,855.53 hectares are highly suitable and 14,377.55 hectares are not suitable for PISOS. The results of this study may assist the decision making processes for planning and development of SSIP using the developed protocol and tools for different purpose in agricultural production in Davao del Sur, Region XI and the whole country.