1943 - Gaines, R. C. Relation between winter temperatures, boll weevil survival, sum- 

 mer rainfall, and cotton yields. J. Econ. Ent. 36(l):82-84. 



Although the records were few, the number of boll weevils found in woods 

 trash was associated with the number of boll weevils found in cotton fields during 

 the following May and June. Since the correlations between winter temperatures 

 and the number of weevils in cotton fields during May and June were significant, 

 the inference would be that ground trash affords an important shelter for the 

 weevils during the winter. 



Control of the boll weevil by effective dusting was reflected in the percentage 

 increase in yield in the experimental plots with both yield per planted acre and 

 total yield in Madison Parish. 



1953 - Gaines, R. C. Relation between winter temperatures, boll weevil survival, sum- 

 mer rainfall, and cotton yields. Assoc. South. Agr. Workers Proc. 50:114. 



Correlation studies were made of various records of weather, survival of 

 boll weevils in different shelters, weevils found in cotton fields in May and June, 

 summer rainfall, and cotton yields in Madison Parish, Louisiana, from 1915 to 

 1952, inclusive. Of all the records included in these studies, boll weevil survival 

 records as either the number found in woods trash in February and March or as 

 the number found in cotton fields in May and June, and summer rainfall recorded 

 as number of days with 0.30 inch or more from June 21 to August 19 had the 

 greatest influence on boll weevil injury, recorded as percentage increase in yield 

 in experimental plots where weevils were controlled with insecticides. Summer 

 rainfall from June 21 to August 19, recorded as total or as number of days with 

 0.30 inch or more, had great influence on total yield of cotton in Madison Parish. 



1953 - Gaines, R. C. Relation between winter temperatures, boll weevil survival, sum- 

 mer rainfall, and cotton yields. J. Econ. Ent. 46(4):685-688. 

 Correlations were found between: 



1. Winter temperatures and boll weevil survival. 



2. Overwintering boll weevils and cotton yields in tested plots. 



3. Overwintering boll weevils, summer rainfall, and increased yields in 

 treated plots. 



1956 - Warren, L. O., Gordon Barnes, T. F. Leigh, H. A. Turney, and Charles Lincoln. 

 Rate of acceleration of boll weevil ( Anthonomus grandis ) in Arkansas during 1954 

 and 1955. Assoc. South. Agr. Workers Proc, 53:151. 



Boll weevil infestations in Arkansas during 1955 were influenced to a great 

 extent by the better moisture conditions prevalent in June and early in July. In- 

 festations in 1954 were depressed in July and early in August due to the lack of a 

 favorable moisture supply during the month of June. 



HIBERNATION 



1905 - Sanderson, E. D. Some observations on the cotton boll weevil. U. S. D. A. Bur. 

 Ent. B. 52:29-42. 



Hibernation of the weevil, including observations on time of entrance into 

 hibernation, emergence from hibernation, and mortality during hibernation. The 

 relation of climatic conditions to hibernation is discussed at some length. The 

 rate of increase of weevils in the fields during the summer is discussed. A gen- 

 eral discussion of the futile use of Paris green as a remedy is presented. Em- 

 phasis is given to the necessity of fall destruction of the cotton stalks in order to 

 combat the pest. 



1907 - Hunter, W. D. Boll weevil prospects for 1907. Farm & Ranch 26:7. Apr. 13. 



Statement that the winter of 1906-07 was unusually favorable for successful 

 hibernation of the weevil. The necessity for applying cultural control methods is 

 emphasized. 



139 



