These samples were photographed on Sat Sept 5th.This is 38 days after pollination for most of these hybrids.As you can see early dent has just begun.In another 20 days physiological maturity should be reached for the earlier maturity hybrids ( Pioneer brand 36V53,P0377XR and DKC 52-59) while in 24 days physiological maturity should be reached for the later maturity hybrids ( Pioneer brand 35F40,P0518HR and 35H42).This would put us to Sunday Sept 27th to reach full maturation for the early hybrids and Oct 1st for the later hybrids.Grain moisture at Physiological maturity usually runs 32-33%.