Decision support model for fertilizer application to maize crop.
1989
Hossain Noor
Decision model for nitrogen and phosphorus application for maize cultivation. The model is based on the experimental work done at AIT since 1978 to this date. Yield of maize is affected significantly by the value of application of both nitrogen and phosphorus. Due to interaction of nitrogen and phosphorus fertilization, a high yield is achieved with a proper and optimum combined application of nitrogen and phosphorus. A field experiment was conducted with maize in the west end campus of the Asian Institute of Technology, Bangkok during February to May 1989. Three replications of nitrogen fertilizer 100 kg/ha, 150 kg/ha and 200 kg/ha with three phosphorus fertilizer combinations 0 kg/ha, 50 kg/ha and 100 kg/ha with systematic plot arrangement were studied. The purpose of the experiment was to check the validity of computer model as well as to improve the model by prognosis and correction. The co-efficient value between the prediction and observed yield was found about 0.84. The observed yield and economic analysis shows that maize production in Thailand can be increased from the present yield of 2500 kg/ha with substantial profit.
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