Insect contaminants at harvest

Insects and insect fragments inadvertently harvested with fresh produce represent a quality and safety concern at packinghouses and for fresh market sales. Common contaminants include leafrollers, codling moth larvae, grasshoppers, beetles, and other mobile insects that move into fruit or vegetable canopies during pre-harvest periods. Contamination risk varies by crop and season but peaks in late summer when populations are highest.

Implement pre-harvest scouting to assess insect pressure on crops scheduled for harvest within one to two weeks. Time harvest windows to avoid peak insect activity. For susceptible crops, apply botanical insecticides or spinosad five to seven days before harvest. Implement proper sanitation at harvest and packing. Maintain detailed pest records to identify seasonal patterns.