Cotton Response Simulation to Dry and Salinity Stress by using of AquaCrop Model

Document Type : Original Article

Authors

1 Assistant professor, Water Engineering Department, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.

2 Assistant professor, Water Engineering Department, Hamedan Agricultural and Natural Resources Research Center, Hamedan,

3 Master of Irrigation and Drainage, PhD Student of Irrigation and Drainage, Ferdowsi University of Mashhad, Mashhad, Iran

4 Assistant Professor, Water Engineering Department, University of Birjand, Birjand,

Abstract

Currently, agriculture is a crucial support for the national food security as well as economic sustainability. Among all factors, water is the most important and limited production factor. The simulation models of yield response to the water and irrigation water salinity are expected to play an increasingly important role in the optimization of water productivity (WP) in agriculture. AquaCrop model is a powerful and valuable tool for improvement of water management in the field and calculating water productivity. In this study, canopy cover, yield, biomass and evapotranspiration of cotton were simulated by using AquaCrop model under different levels of water salinity and deficit irrigation condition. The treatments included three levels of irrigation water salinity and three levels of irrigation depth. The experiment design was laid out with split-split plot in a factorial design with three replications. Results showed that the model can simulate different parameters with high accuracy (d>0.95). By reducing the amount of irrigation water and increasing of irrigation water salinity, simulation error was increased, but simulation results were in the acceptable range. For low levels of water and salinity stress, there was no very difference in the simulation results. AquaCrop model can be valu­able tool in water and salinity management.

Keywords

References

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Irrigation and Water Engineering
Volume 6, Issue 1 - Serial Number 21
December 2015
Pages 166-179

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