Dynamics of Maize Grain Weight and Quality during Field Dehydration and Delayed Harvesting

Dehydration of maize grains in the field can reduce costs associated with drying after harvest. A delayed harvest approach physiological maturity, which plants stand to allow stems dry, has been widely adopted production. However, it remains unclear how harvesting at different time points during dehydration stage may affect grain yield and quality. In present study, experiments were conducted Ningxia Irrigation Area northwest China from 2019 2022, we continuously observed used a linear-plateau model analyze changes weight quality traits (such as bulk density levels starch, protein, oil, fiber, free fatty acids) period hybrids differing maturity times. Harvesting moisture content >31.0% was shown weight, whereas <25.9% did not or yield. The stable for occurred an early-maturing hybrid 5–12 days before mid–late-maturing hybrids. When <37%, density. Grain tended stabilize one two weeks earlier than three period. acid contents kernels 30 silking affected by period, starch unaffected harvested any later 50 silking. Overall, should be relatively low get better superior quality.; is therefore important technical improve efficient production high-quality maize.