In 1943 AMLONG (1) reported an increase in the transpiration of Cooper's Ernite tomato plants grown from seeds that had been soaked for 24 hours in a solution containing 100 mg. of potassium naphalene acetate, 100 mg. of ascorbic acid and 2000 mng. of thiourea per liter of water.Three years later, BROWN (2) investigating the effect of 2,4-Dichlorophenoxyacetic acid (1000 p.p.m.) on the water relations of Phaseolus vulgaris found: "the total amount of water absorbed and transpired bysprayed plants during the five days immediately following treatment was 34% less than that for comparable untreated ones". used in this study. The seeds, sown in soil (three parts loam, two parts peat-moss and one part sand) in three inch pots, were allowed to grow outdoors' until two leaves, not cotyledons, of the plant were "mature."Corn plants were growin and Experiment I was conducted in the greenhouse.
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