Integrated crop management: nutrient management
2005
Anon.,Philippine Rice Research Inst., Maligaya, Science City of Muñoz, Nueva Ecija (Philippines)
A consultation meeting with farmers was conducted in Brgy. [village] Aggassian, Ilagan, Isabela [Philippines] to identify farming problems in the area. Farmers had low yields because of asynchronous planting, lack of knowledge on proper nutrient management, pest problems, and the inherently unfavorable climatic conditions. Initial soil analysis of the test site showed very low pH, organic carbon as low as 0.78 to 1.05%, low P content and high Al saturation, which are indications of an infertile soil and a typical characteristic of the rainfed uplands. A participatory technology demonstration on crop diversification was conducted in a farmless (18 deg slope in Aggassian. Crops planted were hybrid corn, peanut, upland rice NSIC Rc9, red rice, and bush sitao. The existing contour planted with Napier grass, banana, and jackfruit was retained. Fertilizer application was based on NuMaSS recommendation and soil analysis. The neighboring area, which was planted to hybrid corn (monocrop), served as the control and fertilizer application was based on farmers' practice. Hybrid corn yield higher (6.2 t/ha) with NuMaSS fertilizer recommendation. It also gave higher return on investment (R0I). Peanut yielded 1 t/ha and gave 53.5 R0I. However, the drought experienced in the area affected the flowering of rice, resulting in no harvest. About 30 bundles of pole sitao were harvested and used for subsistence of the farmer-partner. The area planted to monocrop hybrid corn yielded 5.87 t/ha. The results suggest that crop diversification, especially in the uplands, offers better advantage than monocropping. Moreover, fertilizer application using the NuMaSS recommendation does not only give higher yield but also higher R01.
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