1953 - Wene, George P. Control of migratory boll weevils in the Lower Rio Grande 

 Valley of Texas. J. Econ. Ent. 46(6): 105 1 - 1053. 



Dust mixtures of 2.5% dieldrin with 10% DDT and 3-10-40 were more effec- 

 tive than 20% toxaphene or 50% calcium arsenate -sulfur in controlling migratory 

 boll weevils. Dieldrin was slightly more effective than the 3-10-40 dust. 



As a spray, dieldrin at 0.29 pounds per acre was more effective than 0.5 

 pound of aldrin or EPN in controlling migratory boll weevils. Endrin at 0.2 

 pound per acre was also more effective than toxaphene at 3 pounds or EPN at 

 0.75 pound against the adult boll weevil. 



During boll weevil migration the intervals between applications should be 

 shortened to 3 or 4 days. 



1953 - Young, M. T., and R. C. Gaines. Insecticide tests for control of the boll weevil, 

 bollworms, cotton aphid and two-spotted spider mite on cotton. Assoc. So. Agr. 

 Workers Proc. 50:112. 



Dimethyl homolog of parathion (2%) plus DDT (5%) did not satisfactorily con- 

 trol the boll weevil. The remaining treatments (aldrin-DDT, dieldrin-DDT, hepta- 

 chlor-DDT, toxaphene -DDT -sulfur, 3-5-40, 3-5-40 alternated with calcium ar- 

 senate, toxaphene 20-sulfur 40) all gave good boll weevil and bollworm control 

 and a small increase in yield. In 2 experiments, 12 sprays (aldrin-DDT, dieldrin- 

 DDT, toxaphene -DDT, toxaphene, heptachlor-DDT, 2 brands of BHC-DDT, endrin, 

 aldrin plus endrin, dieldrin plus endrin, EPN plus DDT, and metacide) when 

 compared with 3-5-40 alternated with calcium arsenate, toxaphene 20% or toxa- 

 phene 20% plus sulfur 40%, all gave good boll weevil and bollworm control 

 followed by increased yields. 



1953 - Young, M. T., and R. C. Gaines. Tests of insecticides for control of cotton in- 

 sects. J. Econ. Ent. 46(1) : 133-136. 



Toxaphene dust, and aldrin and dieldrin sprays gave satisfactory control of 

 the boll weevil. The toxaphene spray was less satisfactory, particularly during 

 the latter part of the season. Toxaphene dust and aldrin and aldrin-DDT sprays 

 gave significant increases in yields over dieldrin-DDT spray, probably owing to 

 a much greater buildup of mites in the dieldrin-DDT plots. 



Compound 269 gave very little control of the boll weevil and a very small 

 increase in yield. 



1953 - Young, M. T., and R. C. Gaines. Control of insects and spider mites on cotton in 



1952. J. Econ. Ent. 46(4) :693-696. 



Chlorinated hydrocarbons reduced the boll weevil as much as 49% to 62%. 

 Inclusion of phosphates, aramite, etc., reduced infestation by 34% to 39%. 



1954 - Arant, F. S. Experiments for control of cotton insects in 1953. Assoc. So. Agr. 



Workers Proc. 51:94. 



Endrin at the rate of 0.375 pound per acre reduced the boll weevil infestation 

 to a lower level than any other treatment used. Chlorthion at 0.75 pound per acre, 

 methyl parathion at 0.375 pound per acre, and malathion at 3 pounds per acre, 

 each in mixtures containing 0.75 pound DDT per acre, were satisfactory in con- 

 trolling boll weevils during a season of mild temperatures and heavy weevil in- 

 festation. 



1954 - Brown, E. C., Jr., and R. L. Hanna. Amount of spray per acre for the control of 

 cotton boll weevils and bollworms. Tex. Agr. Expt. Sta. Prog. Rpt. 1 687. May 31. 



Tests were conducted in the Brazos River Valley in 1950-1953 to compare 

 the effectiveness of 3 different quantities of liquid sprays per acre applied with 

 3 nozzles per row. An equal amount of active insecticide was applied to all test 

 plots. Two gallons of spray per acre was as effective as 6 or 14 gallons, as 

 measured by yield and infestation. 



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