Science: Ants' Cows

All over Ohio armies of men & women.

armed with spray guns and nicotine sul phate, sallied into the tomato and potato fields. Last week, thanks to their deter mined attack and the arrival of hot weather, it looked as if Ohio and its neighboring states had succeeded in repelling the worst invasion of aphids since 1918.

Nature had made it a big aphid year.

The long, cool, wet spring favored aphid reproduction and killed off many of its natural enemies (notably ladybugs). The aphid, or plant louse, a squashy insect usually about the size of a pinhead, is not rated as a big-league...

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