Harvest sorghum when grain is in the medium dough to hard dough stage, or when grain is about 35 percent moisture. However, this practice will reduce total feed production. Reduced tonnage may not be offset by the increased feed value. Insect Control Southern corn root worm can be a serious problem in the southern part of the state as can black cutworm on early planted corn. An in-furrow insecticide or hopper box insecticide seed treatment is recommended for control of these insects.
Chinch bug can be a problem regardless of planting time.
Early planting will reduce most other insect problems. Sorghum - Sorghum planted early will have less insect problems than sorghum planted in late May or early June. Sorghum midge will lay eggs in the head when it is blooming, and the resulting larva will destroy the grain. Sorghum planted in late April to mid-May escape midge damage. It is difficult to scout intermediate sorghums for midge because of plant height, but it can be done.