. Bulletin of the Department of Agriculture. Agriculture. 4 BULLETIN 731, U. S. DEPARTMENT OP AGEICULTUEE. poisoned cotton daily. When the cotton matured a remarkable sight was presented. The unpoisoned cotton showed practically no open bolls, while the poisoned plat to the very last row was practi- cally white with open cotton. This is illustrated in figures 1 and 2, which show different views of the dividing line between the poisoned and unpoisoned cotton shortly after the first killing frost. When the cotton was picked it was found that the unpoisoned plats yielded 45 and 65 pounds of
. Bulletin of the Department of Agriculture. Agriculture. 4 BULLETIN 731, U. S. DEPARTMENT OP AGEICULTUEE. poisoned cotton daily. When the cotton matured a remarkable sight was presented. The unpoisoned cotton showed practically no open bolls, while the poisoned plat to the very last row was practi- cally white with open cotton. This is illustrated in figures 1 and 2, which show different views of the dividing line between the poisoned and unpoisoned cotton shortly after the first killing frost. When the cotton was picked it was found that the unpoisoned plats yielded 45 and 65 pounds of seed cotton per acre, respectively, while the poisoned plat yielded about 500 pounds per acre. This, of course, did not constitute a good yield of cotton but was very remarkable in view of the opportunity which this cotton had had to produce a Fig. 1.—View showing dividing line between poisoned and unpoisoned cotton on Algodon Cut No. 1 October 30, 1916, Tallulah, La. Beginning of additional unpoisoned cotton can be distinguished at upper right-hand corner of view. This test was particularly interesting because of the severe conditions which prevented the unpoisoned cotton from making any production, because the plants were so small, and because it was possible to poison the last row of the treated plat effectively without allowing the poison to drift on to the adjoining check row. For this reason the line of demarcation between the plats was much more pronounced than usually was possible. Additional tests during the same season located in better cotton frequently gave larger gains in production per acre, but of course the percentage of gain was not so large. In one case of poisoning during the month of July a gain of about 600 pounds of seed cotton per acre was secured. Figures 3 and 4 show a comparison of the typical. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
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