Science: Rough on Aphids

George Curtis Quick, ladybug merchant of Phoenix, Ariz., was as busy last week as any of his bugs. Orders were flooding in from all over the country. An Oklahoma farmer ordered 1,000 gallons of bugs (135,000 bugs per gal.). A group in the Texas Panhandle wanted all that "Pappy" Quick could supply. The price: $7.50 per gal., in lots of ten gallons or more.

In his years as a professional crop-duster, Pappy saw the damage that poisons can do in upsetting the balance of nature. They often kill all insects, including those that eat other insects. Heavy dusting or spraying is often...

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