Can Continuous Canopy Temperature Measurements Indicate Response Differences to Water Stress Among Different Corn Hybrids?.

Continuous canopy temperature measurements over different corn hybrids subjected to varying irrigation levels (no-, mild- and moderately- deficit) were used to determine the relationship between canopy temperature depression and VPD, and to calculate a theoretical CWSI. Daily comparisons of canopy temperature depression compared with VPD indicate transpiration can be limiting in some DT corn hybrids. The calculation of a seasoanl average theoretical CWSI among different corn hybrids also supports differences in hybrid response to water stress.