1906 - Anonymous, El picudo del algodon. El Progreso de Mex. 12:64, 74-75, 88-89, 

 99-101, 115-117, 131-132. Jan. 30 - Mar. 8. 



A brief outline of the work carried out by the Comision de Parasitologia 

 during 1905, and the plan of work for 1906. The various methods of control are 

 discussed at length. These include the seed to be used, method of preparing the 

 soil, planting, cultivating, using trap plants, shaking the weevils from the plants, 

 using special machines, the breeding and distributing a native ant- -the kelep or 

 Guatemalan ant--using poisons, planting of special varieties of cotton and various 

 ideas regarding weevil control. New projects to be undertaken by the Commision 

 are mentioned. 



1908 - Newell, W. The boll weevil. La. State Crop Pest Comn., 2d Bien. Rpt. of the 

 Sec. 1906-1907:9-16 and an appendix. 



The following topics are discussed: Cultural experiments, autumn spraying 

 experiments, weevil destroying machines and boll weevil "remedies", boll 

 weevil parasites, the Shreveport laboratory, cooperation with the Bureau of 

 Entomology, and experiments with Paris green. Under the last topic is presented 

 the results of several extensive field tests with Paris green against the boll 

 weevil, and a summary of the results of a special tour of investigation made by 

 the Commision through a region where Paris green was extensively used. These 

 experiments showed that no increase in crop resulted from the application of 

 Paris green. 



1912 - Hunter, W„ D., and W. D. Pierce. The Mexican boll weevil: A summary of the 

 investigations of this insect up to December 31, 1911. Sen. Doc. 305, 188 p. 

 A rather complete discussion on natural and artificial control. 



1915 - Hinds, W. E„ Chain drag for boll weevil control. Ala. Agr. Expt. Sta. Press B. 



78, 1 fig. June 15. Auburn. 



An exceedingly simple and inexpensive mechanical device for weevil control, 

 the value of which has been proven in Texas, is the chain drag, or cultivator. It 

 does not catch the weevils or collect cotton squares, but combines in one process 

 the cultivation of the crop and the collection of the fallen, infested squares to the 

 middle of the rows of the cotton, by drawing over the ground the heavy chains at- 

 tached to the ends of a beam so that they will assume a semi-circular shape when 

 dragged along. Thus the infested squares are exposed to the heat of the sun and 

 the weevils in various stages are killed. 



The device is of special value in hot, dry weather and on soils that are not 

 baked. It is constructed as follows: A spar or log of wood is used, 2 or 3 inches 

 in diameter and fairly heavy, 6 or 8 inches shorter than the distance between the 

 rows of cotton plants. To the ends of this, 2 pieces of chain, one shorter than the 

 other, are attached so as to form 2 loops one inside the other. From 12 to 15 feet 

 will be sufficient for the 2 loops, for a log 3 or 4 feet in length. The best type is 

 a square linked chain, such as is used in logging. 



By dragging the log and attached chains for a short distance over a smooth 

 floor, the loops will arrange themselves more or less symmetrically. A wire is 

 then attached to the middle link of each chain, and 2 more to the log at about l/3 

 of its length from each end; these wires are gathered to and twisted around a 

 piece of wood which will serve as a handle. The wires are of such a length that 

 the man in charge of the drag can conveniently lift the chains over stones or ob- 

 stacles or use them for guiding the drag. All that is needed further is to attach a 

 draw bar to the log by 2 chains of such a length that the horse, when pulling on 

 it, will not lift the log off the ground. 



In dry weather, weevil infested fields should be gone over twice a week with 

 the device. A man and mule can cover 7 to 8 acres a day. When used in dry 

 weather, it will save the extra labor of handpicking infested squares. 



1916 - Hinds, W. E. Boll weevil in Alabama. Ala. Agr. Expt. Sta. B. 188, 64 p., 6 pi. 



Mar. Auburn. 



This bulletin deals further with the introduction and spread of the boll 

 weevil in Alabama. Since the infestation must be regarded as permanent, all 



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