Simulation of sweet corn yield and biomass with nitrogen application in two irrigation regimes: sprinkler and furrow
Subject Areas : Crop Production Research
1 - عضو هیات علمی دانشگاه
Keywords: CSM-CERES, Fertilizer, Gorgan, Sweet corn,
Abstract :
In order to investigate the efficiency of the CSM CERES-Sweet corn v4.5 model on golden sweet corn (SC403), a study was conducted at the Gorgan Agricultural Research Center station during 2007 and 2008. The experiment was conducted as completely randomized block design with three replications. The treatments included sprinkler irrigation and furrow irrigation (Is and IF), with each irrigation treatment containing two levels of nitrogen fertilizer at 200 and 300 kg/ha (N200 and N300), which was applied in two stages. The CSM CERES-Sweet corn v4.5 model was calibrated using data from 2007 and evaluated with data obtained in 2008. To calibrate the model, plant species coefficients were calculated using phenological development components. The results showed that the model is able to predict leaf area index and total shoot dry weight well. In this study, the model prediction for grain yield was acceptable with a root mean square error of less than 18%. In addition, the model validation results showed that if the model is calibrated, it can well simulate other plant components as well as various management strategies in addition to the components on which it was calibrated.