![]() The approach had higher accuracy for sites with high rainfall or dominant summer rainfall. The actual ability was assessed with measured wheat yields and PAWC. Potential prediction ability was quantified using independently simulated wheat yield on actual soils. The empirical model was inversely used to predict PAWC from observed crop yield. The simulated results were used to develop an empirical model to relate simulated yield to PAWC. The APSIM model was used to simulate wheat yield on synthetic soils with contrasting PAWC and climates. We developed and tested a general inverse approach to estimate PAWC from crop yield. ![]() Quantification of variations in plant available water holding capacity (PAWC) of soils helps to improve yield forecast and inform spatially variable management practices in dryland agriculture systems.
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