CLEMSON, S.C. — Identifying corn growth stages is essential for successful crop management of pests, irrigation, and fertility. This guide will help growers, consultants, Extension, and research personnel properly identify corn growth stages in field corn hybrids.

Generally, corn growth and development can be divided into vegetative (V) and reproductive (R) growth stages. The beginning of each stage starts when at least 50% of plants in the area are at that stage.^1,2,3The vegetative growth stage begins with corn emergence and is completed by tasseling. The reproductive growth stages start with silking and end when a black layer forms, indicating physiological maturity.

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–Clemson Extension Land Grant Press