Thursday, April 28, 2011


Several reports have been received already about grasshoppers in moderate to high numbers in cotton fields that are in the process of being planted in central Alabama. The presence of grasshoppers is not surprising. But the fact that some fields have predominately adults is surprising. Normally the population is almost all immature at this time of the season. Adults usually occur in late May and June. The significance of the life stage is that adults are much more difficult to control. Acephate (Orthene or generics), chlorpyriphos (Lorsban or generics), Dimilin and others give good control of the immature stage. Much higher labeled rates are required to control adults.