NOVA Season 5 Episode 16 Insect Alternative ( Air Date 1978-05-24 ) Genre Documentary category. Overview "In a world that each year loses up to 40 percent of its crops to insects, some form of pest control is desperately needed. But chemical pesticides have backfired. Pesticide-resistant insects frequently develop, and previously harmless insects have become devastating infestations. Farmers have found themselves trapped on a "pesticide treadmill"—the more they spray, the more they have to spray. NOVA examines several alternatives for pest control.".
NOVA Season 5 Episode 16 Insect Alternative
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