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Closing yield gaps in maize production in Southeast Asia through site-specific nutrient management

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Title Closing yield gaps in maize production in Southeast Asia through site-specific nutrient management
 
Creator Pasuquin, JM
Pampolino, MF
Witt, C
Dobermann, Achim
Oberthür, Thomas
Fisher, Myles J.
Inubushi, K.
 
Subject diet
field experimentation
maize
risk analysis
nutritional requirements
yields
ensayos en campo
maíz
análisis de riesgos
necesidades de nutrientes
rendimiento
 
Description Rising incomes and changing dietary requirements are swiftly transforming maize (Zea mays L) in Southeast Asia from a food staple into an important industrial commodity. Increased maize production is required to meet rising demands, but additional production should come from the sustainable intensification of existing farmlands to minimize the undesirable effects of agriculture on the environment. We hypothesize that maize yields, profit, and N use efficiencies can be significantly increased through site-specific nutrient management (SSNM), thereby reducing yield gaps in the region. Through a combined approach of simulation modeling and on-farm research in at least 65 sites in 13 major maize-producing domains across Indonesia, Vietnam and the Philippines from 2004 to 2008, we were able to (a) quantify maize yield gaps and yield responses to fertilizer application, (b) evaluate the agronomic and economic performance of SSNM, and (c) evaluate the incremental profitability of SSNM in various production and grain and fertilizer price scenarios. The average exploitable yield gap between the attainable yield and current farmers’ yield in Southeast Asia was about 0.9 t ha−1. Yield responses to fertilizer application across the region followed the order N > >P > K. Yield response to N was higher in irrigated sites than in rainfed sites (6 t ha−1 versus 2 t ha−1), while P and K fertilizer responses were similar across production systems (
 
Date 2014-02
2014-08-18T13:17:07Z
2014-08-18T13:17:07Z
 
Type Journal Article
 
Identifier Pasuquin, JM, Pampolino, MF, Witt, C, Dobermann, A, Oberthur, T, Fisher, MJ, Inubushi, K. 2014. Closing yield gaps in maize production in Southeast Asia through site-specific nutrient management . Field Crops Research 156: 219-230.
0378-4290
https://hdl.handle.net/10568/42143
https://doi.org/10.1016/j.fcr.2013.11.016
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Format p. 219-230
 
Publisher Elsevier BV
 
Source Field Crops Research