Insect infestations reduce yields and lower the
quality of harvested garden vegetables. Three to seven
gen er a tions of many insect pests attack garden
veg e ta bles during the growing season. All plant parts
may be injured by insects. Some insects bore into roots,
seeds or stems. Many suck large quantities of plant
sap. Others destroy crops by chewing on the succulent
foliage, stems or fruits. Plant diseases are carried by
certain insects.