Cultivation pattern optimization using crop rotation priorities using AquaCrop crop yield simulation model to maximize the economic benefit

Document Type : Research Paper

Authors

1 Department of Water Science and Engineering, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

2 Water Science and Engineering, Faculty of Agriculture, Ferdowsi University of Mashhad

3 Professor of Water Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran

Abstract

To choose the right cropping pattern with the aim of maximizing farmer income, stability and stability in production, can not be satisfied only with one-year economic issues, but also issues such as weed control, pest and disease control and soil fertility in the long run. Duration should be considered. The method that farmers traditionally use, and still use today, is crop rotation. However, crop rotation is not usually considered in crop pattern optimization. In this study, the effect of crop rotation on crop yield and the amount of profit (as an effective management action) of the crop unit has been investigated by an evaluation equation. In order to calculate crop rotation as a factor in the optimization equation, an innovative method is presented in this study. In this method, the matrix of crop rotation impact coefficient matrix was completed through the opinion of an experienced farmer. The values of this matrix show the coefficients of impact of cultivation of each crop after another crop. Also, to evaluate the effect of rotation, according to farmers, 7 different rotations with wheat, potato, corn, barley and fallow crops were studied. The study area is Shavar irrigation and drainage network in Khuzestan province. The results of the rotation effect showed that in different rotations, the yield of wheat increased by 9.6%, corn by 3.3% and barley by 11.4%, which increases the profit per crop. Also, in the study of superior rotation with other rotations, the results showed that the presence of fallow in rotation and the use of appropriate rotation with selected plants, can increase the profitability of the crop unit.

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