Site-specific nutrient management for maize production in favorable environments of the Philippines
Issue Date
12-2015
Abstract
Increasing the productivity and profitability of maize requires the effective use of nutrients from naturally-occurring indigenous and fertilizer sources to achieve high and sustainable yield. On-farm trials were conducted at key production sites in Isabela, Bukidnon, and Nueva Ecija [Philippines] with one or two hybrid maize crops per year within 2005 to 2007 to develop and evaluate a site-specific nutrient management (SSNM) approach for irrigated and favorable rainfed maize in the Philippines. Attainable yields of 7-10 t/ha were obtained in the dry season and 7-8 t/ha in the wet season from treatments supplied with ample fertilizer. Grain yields from omission plots followed the same trends as the attainable yield. Yield response to fertilizer application followed the order N>P=K. Fertilizer recommendations in the SSNM treatment were calculated based on the site-specific attainable yield and yield response to fertilizer application. The SSNM approach increased yield on average by 1.0 t/ha (+21%) compared to the farmer's fertilizer practice (FFP) measured in the same cropping seasons. Yield increase in the SSNM were associated with higher application of fertilizer N (+18%), P (+143%) and K (+135 %). Fertilizer P and K application rates in the SSNM plots accounted for the partial removal of P and K in grain and stover to avoid nutrient depletion in the soil. Fertilizer cost was 55% higher in the SSNM, while profit (gross benefit over fertilizer cost) increased by PhP 5,789/ha sup (+8%) over the FFP.
Source or Periodical Title
Philippine Journal of Crop Science
ISSN
0115-463X
Volume
40
Issue
3
Page
40-48
Document Type
Article
College
College of Agriculture and Food Science (CAFS)
Physical Description
illustrations; tables
Language
English
Subject
Corn;
Recommended Citation
Ocampo, A. M.; Labios, R. V.; Labios, J. D.; Lapoot, C. R.; Tumamang, S. C.; Gines, H. C.; Descalsota, J. C.; Pasuquin, J.M. C.; and Witt, C., "Site-specific nutrient management for maize production in favorable environments of the Philippines" (2015). Journal Article. 4168.
https://www.ukdr.uplb.edu.ph/journal-articles/4168
En – AGROVOC descriptors
MAIZE; ZEA MAYS; PLANT PRODUCTION; NUTRITIVE VALUE; CROPPING SYSTEMS; SITE FACTORS; PHILIPPINES