Previous Crop Impacts Winter Wheat Sowing Dates, Available Water at Sowing, and Grain Yield

Cropping systems choices can directly affect the sowing date for winter wheat, which is among most important variables that determine attainable yields in U.S. Central Great Plains. Our objective was to investigate effect of previous crop on wheat grain yield through modulation and its impact plant available water at sowing, temperatures during critical period determination. A no-tillage rainfed field experiment established 2019 Ashland Bottoms, KS. Winter sown either after summer fallow, full-season soybean, double-cropped or corn—thus, resulting a range dates 270–326 days year (September 27 November 22). The optimum site based estimated day 296 ± 5 (October 18 28). fallow fullseason soybean resulted greatest yields, whether slightly later than optimum. positively related sowing. Later were likely reduce could delay wheat’s development higher occurring determination (i.e., surrounding anthesis). also shortened filling duration due an overall cycle elevated temperatures. Thus, adjusting first step determines crop’s potential improved reduced When following crop, should be as soon harvested try mitigate these negative effects late