9. Do not poison for the leaf -worm unless its work begins at an abnormally- 

 early date in the summer. 



10. Do not go to the expense of buying special preparations for destroying 

 the weevil. Disappointment and loss is certain to follow. 



1909 - Hunter, W. D. What can be done in destroying the cotton boll weevil during the 

 winter. U. S. D. A., Bur. Ent. C. 107:4. 



While the most important step in the control of the cotton boll weevil is the 

 fall destruction of cotton stalks, much effective work can be done while the pest is 

 in hibernation. The raking and burning of trash in cotton fields, the burning of 

 turn rows, ditches, sorghum and corn fields, etc., and the clearing of fence 

 corners and similar situations are particularly recommended. 



1909 - Newell, W., and M. S. Dougherty. The "V" cotton stalk cutter. How to make it and 

 how to use it. La. State Crop Pest Comn. C. 30:151-158. Sept. 15. 



Contains specification for building the "V" cotton stalk cutter and how to 

 operate it. 



1909 - Newell, W. What constitutes a perfect stand of cotton when fighting the boll 



weevil. La. Crop Pest Comn. C. 25:15. 



In sections infested by the boll weevil, cotton bolls are not made after Aug. 

 15 (and sometimes none after Aug. 1) and, therefore, each plant requires only 

 enough growing room in which to produce bolls up to the date of maximum infes- 

 tation—about Aug. 15. Having in mind these facts, the author conducted experi- 

 ments to determine what constitutes a perfect stand- -the number of plants on any 

 given area which will give the greatest yield per acre. A summary of the com- 

 parative production of widely spaced and closely spaced cotton is presented. 



These experiments were conducted on such a variety of soils and under such 

 a variety of conditions that the results are considered trustworthy. 



Spacing about as follows gave the maximum yields per acre under ordinary 

 conditions: 



On poor upland soil, rows 3 feet apart, plants 10 inches apart in the row. 



On rich upland or good prairie soils, rows 3 feet apart, plants 12 inches 

 apart in the drill. For worn, or very sandy bottom lands, rows 3-| feet 

 apart, plants 12 inches apart in the drill. 



On bottom lands of medium fertility, well drained, rows 4 feet apart, plants 

 15 inches apart in the drill. 



1910 - Hayhurst, P. How to control the two worst cotton pests, the boll weevil and the 



bollworm. Ark. Agr. Expt. Sta. C. 4. 



The author recommends the production of an early crop. Burn all bolls and 

 rubbish in and about fields in October. Plow stalks under not later than Nov. 1. 

 Plant rows far enough apart to permit sunlight to reach fallen squares. Rotate 

 crops. 



1910 - Hunter, W. D. The status of the boll weevil in 1909. U. S. D. A., Bur. Ent. C. 

 122, 12 p. 



The results "of experiments with a chain cultivator designed by Dr. W. E. 

 Hinds. 



1910 - Newell, W. How to increase the death rate among the boll weevil during winter 



so as to protect the following year's crop. La. Crop Pest Comn. C. 28:4. 



Emphasizes the importance of fall destruction of all cotton plants by cutting 

 them down and burning before Oct. 15, or, at the latest, Nov. 1. 



1911 - Anonymous. Experiment station work. XIV. U. S. D. A. Farmers' B. 457:24, 1 fig. 



Articles on fighting the boll weevil by clean farming methods, hastening 

 maturity of cotton by fertilizers, etc. 



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