In the Southwest, cattlemen wage a relentless war against mesquite, a ragged, bushlike tree. It chokes out the grazing grass, hides cattle at roundup time. Cattlemen have attacked it with fire, bulldozer and assorted chemicals. But it more than holds its own. Texas and Oklahoma alone have an estimated 71 million acres of it. Last week Dow Chemical Co. announced that, after three years of intensive testing, it had a chemical that could win the mesquite war. The killer: 2,4,5-T (short for trichlorophenoxyacetic acid).
The man who has done most of the testing of...
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