Vegetative growth stages are called leaf stages and are identified by the number of exposed leaves. Table I. Description of sorghum growth stages. Stage Time intervals is 32 days. Stage One-half of the 11th actual leaf is exposed. The collar of the ninth and the tip of the 13th leaf are visible.
Time interval is four days.
Stage Add one leaf to 12-leaf stage for leaf exposed, leaf collar and leaf visible. Early Milk Grain is fully formed. Substance is a clear to slightly white, milky liquid. Mature Physiological maturity has been reached. Less than 40 percent moisture content.