The VT stage (figures 28 and 29) is initiated when the last branch of the tassel is completely visible and the silks have not yet emerged (are not visible) (see figure 30). VT begins approximately 2-3 days before silk emergence, during which time the corn plant will almost attain its full height and pollen shed begins. The time between VT and R1 can fluctuate considerably depending on the hybrid and environmental conditions. Under field conditions, pollen shed (also termed pollen drop) usually occurs in the late mornings and early evenings.

Management Guides - VT Stage

The corn plant from VT to R1 is more vulnerable to hail damage than at any other period because the tassel and all leaves are completely exposed. Complete leaf removal by hail at this stage will result in essentially complete loss of grain yield.

 The pollen shed period will extend for one to two weeks. During this time, each individual silk must emerge for pollination if a kernel is to develop.

 Tassel growth and development are summarized in figures 32 and 33 from V9 through pollen shed. Figures 34 and 35 show a tassel segment before and during pollen shed.

figure 28	figure 29	figure 30	figure 32
figure 33	figure 34	figure 35

Next Page - Reproductive Stages || Previous Page - V18 Stage  || Table of Contents