Effects of Corn Row Width and Defoliation Timing and Intensity on Canopy Light Interception

Yield losses due to defoliation may be reduced in corn ( Zea mays L.) grown at narrow compared to wider row widths. However, the physiological mechanisms behind this response are unclear. A 2‐yr experiment was conducted with two hybrids, row widths (38 and 76 cm), and a combination of defoliation timings–intensities: undefoliated control, V7–100%, V14–50%, V14–100%, R2–50%, and R2–100%. Intercepted photosynthetically active radiation (IPAR, MJ m...