When using Lasso or Dual, be sure to use seed that has been treated with the appropriate safener. When planting after a failed corn crop, be sure that the herbicides used on the corn are labelled for sorghum. Solid seedings result in finer and shorter plants which are desirable for silage and grazing. Narrow rows provide intense competition and herbicides are rarely necessary when seeded in this fashion. Only a few herbicides are labelled for these summer-annual crops so weed control should be considered carefully in selecting a row spacing.
Row spacing itself, however, has relatively little effect on total forage production.
Seeding rates vary depending on seeding method and anticipated moisture conditions. Both the grain and forage sorghums are most frequently used for silage or green chop in a single cut system, although they can be grazed if desired. Silage should be cut when the grain is in the medium to hard dough stage. Generally, whole plant moisture should be near the desired level for ensiling at this time. In some cases, where maturity is delayed, a frost may be necessary to reduce whole plant moistures to an acceptable level.