Environmental Science
6 years ago

New crop coefficients improve water conservation in drought-stricken areas.

Journal of Soil and Water Conservation
Drought-stress modified crop coefficients for estimation of evapotranspiration of spring wheat in the southwest Loess Plateau of China
Q. Zhang, W. Wang, Fulin Yang

Paper Summary

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Evapotranspiration (ET) estimation for spring wheat in China's Loess Plateau was inaccurate using standard methods. The crop coefficients recommended by FAO overestimated ET by 55%. Drought stress significantly affected ET, with crop coefficients varying based on available water. A new model integrating drought stress factors improved ET estimation accuracy, outperforming the FAO-recommended coefficients.