Science: The War Against Weeds

U.S. farmers and gardeners are better armed than ever before for this year's battles against their prime enemies—insects and weeds. Against insects, the wonder insecticide DDT is scheduled for large-scale Government tests and a limited amount will be available for civilian experiments this year. Against weeds, the No. 1 enemy, which cost farmers as much ($3,000,000,000) as all other pests combined, the prospects are even brighter. Some promising weapons: ¶ A flamethrower. Used mainly on cotton, sugar cane and corn plantations, this tractor-drawn implement spurts a 2,200° flame along the ground...

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