توضیحات:
دانلود پاورپوینت آفات مواد غذايي انبار شده زبان انگلیسی ۶۰ اسلاید

Stored food pests

•80% of human food comes from grains

•12% of harvest is lost to insects before harvest

•another 36% is lost after harvest to insects

•overall total food losses due to pests are about 50% destruction



Two Pest Categories

•Primary – Cause initial injury

•Secondary – Take advantage of injury