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Description: Field studies of the effects of various agricultural management strategies on nitrate leaching are expensive and time-consuming. Hence, plant growth models such as DSSAT software can simulate daily plant growth and development and also are capable of simulating daily nitrogen uptake and nitrate leaching into the groundwater. In this study, the performance of nitrogen balance model of the DSSAT software was evaluated by simulating nitrate leaching from the root zone of silage maize at different levels of applied water and nitrogen fertilizer. The experiment consisted of three levels of nitrogen fertilizer and four irrigation of soil moisture depletion (SMD) with three replications. Nitrate leaching was measured by ceramic suction cap and simulated by DSSAT model during the growing season in 36 plots. The results showed that by increasing nitrogen fertilizer in full and over irrigation, measurement and simulation values of nitrate leaching were not significantly different. In deficit irrigation treatments, the nitrate leaching was very low and close to zero either in field or in simulation.

Keywords: Nitrate leaching, nitrogen fertilizer, and DSSAT model
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Citation: Rabie, M., M. Gheysari, S.M. Mirlatifi, and G. Hoogenboom. 2013. Simulation of Nitrate Leaching with the DSSAT Model under Different Levels of Nitrogen and Water Application. CSBE/SCGAB 2013 Annual Conference, University of Saskatchewan, Saskatoon, SK, 7-10 July 2013.
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Date: 2013-07-07
Technical field: Soil and Water Systems Engineering
Conference name: CSBE/SCGAB 2013 Annual Conference, University of Saskatchewan, Saskatoon, SK, 7-10 July 2013.
Session name: Soil and Water

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Type: Text.Article
Format: PDF
Publication type: Technical conference
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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