Some of the late corn could still have problems with stink bugs or southwestern corn borers . Sugarcane borers have not been much of problem this year in south Louisiana. Many fields have ear tip damage from corn earworms and fall armyworms . Although their effect on corn yield is either negligible or not worth the cost of treatment, their subsequent generations could be a problem in other crops. The most abundant insect pest is the three-cornered alfalfa hopper .
Populations are at or above threshold in many fields, and some fields have already been treated.
The threshold is one or more adult hoppers per sweep when the field is setting pods. Stink bugs have been relatively light this year, but this condition is due to change. As the corn crop continues to dry down, stink bugs should move into soybeans gradually. The initial migration may not require treatment, but the subsequent generation probably will. There seems to be an unusually high number of brown stink bugs present this year.