Results of this study indicate that certain herbicides may be used to reduce soilmoisture depletion by weedy plant species and thus insure good stands of grasses, even when seeded in seasons of low rainfall. Vigorous grass plants are more likely to result if soil-moisture reserves are high at the time of seeding.

These studies were cooper-ative investigations of the University of California and Crops Research Div., ARS, U. S. Dept. of Agriculture.