Detection of physical and chemical properties within the growing season could help predict the overall health and yield of a corn crop. Little research has been done to show differences of corn hybrids on canopy reflectance sensing. This study was conducted to examine these potential differences during the early- to mid-vegetative growth stages of corn on three different soil types in Missouri. Canopy sensing (Crop Circle) and SPAD chlorophyll meter light readings were taken through most growth stages from v3 to v10 on 10 (2008 growing season) and 7 (2009 growing season) hybrids. Variability within and between hybrids was most noted for corn less than 40 cm in height. Preliminary analysis showed that soil type and surface wetness impacted canopy readings more than hybrid. The findings of this investigation could help evaluate the needs of a crop and determine the most optimal times for canopy sensing for variable rate N applications.