Effects of Nitrogen Application on Post‐Silking Root Senescence and Yield of Maize

The size of roots and their physiological activity during the grain‐filling stage affect water and nutrient uptake, and grain yield (GY) in maize ( Zea mays L.). The aim of this study was to determine the effects of different N levels on postanthesis root senescence in field‐grown maize. Three N levels (0, 120, 240 kg N ha −1 ) was applied to field‐grown maize, and the length and weight of roots in the 0‐ to 40‐cm soil layer, nitrogenous...