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
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پاورپوینت آفات مواد غذايي انبار شده زبان انگلیسی