. Effect of soil applications of insecticides on the growth and yield of vegetable crops. Plants Effect of insecticides on; Vegetables Growth; Insecticides. 4 CIRCULAR 926, U. S. DEPARTMENT OF AGRICULTURE. Figure 2.—Disking to incorporate the insecticide with the soil. Cultural Practices The soil was prepared for planting in the usual manner. In 1950 an ammonium nitrate fertilizer ( percent nitrogen) was ap- plied over the entire site at the rate of 260 pounds per acre and disked in. In 1951 an ammonium phosphate fertilizer (16 percent nitrogen, 20 percent phosphorus) was applied at the sa
. Effect of soil applications of insecticides on the growth and yield of vegetable crops. Plants Effect of insecticides on; Vegetables Growth; Insecticides. 4 CIRCULAR 926, U. S. DEPARTMENT OF AGRICULTURE. Figure 2.—Disking to incorporate the insecticide with the soil. Cultural Practices The soil was prepared for planting in the usual manner. In 1950 an ammonium nitrate fertilizer ( percent nitrogen) was ap- plied over the entire site at the rate of 260 pounds per acre and disked in. In 1951 an ammonium phosphate fertilizer (16 percent nitrogen, 20 percent phosphorus) was applied at the same rate. No fertilizer was applied before the 1949 crop was planted. Table 1.—Rainfall (in inches) at Ventura, Calif., about 8 miles from the experimental plots Month January February March_ April May June Julv August September. October November. December . 1949 Total. 0 .18 0 0 0 0 1950 .10 .20 0 .17 .41 .22 1951 17-year average 0 0 0 .01 0 .83 .08 0 .04 .09 .65 .80 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stone, M. W. (Marshall Weddel), 1900-; Foley, F. B; Bixby, D. H. Washington, D. C. : U. S. Dept. of Agriculture
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