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