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Interpretive Summaries:
2010 - Site-Specific Nutrient Management for Maize in the Philippines (Phil-Corn)
2009 - Site-Specific Nutrient Management for Maize in The Philippines
2008 - Site-Specific Nutrient Management for Maize in The Philippines (Phil-Corn)
2007 - Site-Specific Nutrient Management for Maize in The Philippines (Phil-Corn)
2006 - Site-Specific Nutrient Management for Maize in The Philippines (Phil-Corn)
2005 - Site-Specific Nutrient Management for Maize in The Philippines (Phil-Corn)
2004 - Site-Specific Nutrient Management for Maize in The Philippines
Site-Specific Nutrient Management for Maize in the Philippines (Phil-Corn), 2010
This project is part of a larger multi-country research initiative by the IPNI Southeast Asia Program (SEAP) to increase the productivity and profitability of maize farming in the region through site-specific, integrated crop and nutrient management. In the Philippines, IPNI SEAP collaborated with the University of the Philippines at Los Baños (UPLB) and the Department of Agriculture’s (DA) Bureau of Agricultural Research (BAR) to develop, evaluate, and refine a new plant based site-specific nutrient management (SSNM) approach for irrigated and favorable rainfed maize. On-farm trials were conducted at three key maize-producing provinces (Isabela, Bukidnon, and Nueva Ecija/Tarlac) in 2005 to 2007. Wider-scale evaluation and delivery of SSNM began in 2008 with the launching of the National Initiative on SSNM for Maize by the DA. A National Management Team, with representatives from the National Corn Program, Bureau of Soils and Water Management, BAR, and UPLB, was created to facilitate dissemination efforts. Fully-funded by the DA, the wider-scale evaluation of SSNM for maize was implemented by the Regional Integrated Agricultural Research Centers (RIARCs) in over 150 on-farm trials at 16 key maize sites during 2008-2010.
Attainable yield measured in farmer fields was on average 2.1 t/ha or 31% greater than the yield achieved with current farmer fertilizer practice (8.9 vs. 6.8 t/ha). Grain yield with site-specific nutrient management (SSNM) (using optimal fertilizer rates) was 1.3 t/ha higher than the farmer practice (8.1 vs 6.8 t/ha). When used in combination with SSNM strategies, Bio-N (a microbial inoculant) and organic matter can replace 23 kg N/ha of the inorganic N fertilizer requirement of maize without significant yield loss.
To achieve widespread uptake of this work, a country-wide farmer participatory evaluation of fertilizer guidelines from the Nutrient Expert software is underway as part of the Quick Guide development process. Philippines–04
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