1933 - Gaines, J. C. Reliability of differences between data obtained in cotton insect in- 

 vestigations. J. Econ. Ent. 26(1 ):274-279. 



A statistical comparison is made of methods used in taking cotton insect in- 

 festations and methods used in obtaining data on growth of cotton plants in experi- 

 mental plots. 



1933 - Gaines, J. C. Trap collections of insects in cotton 1932. Brooklyn Ent. Soc. B. 

 28(2):47-54. 



In Texas in 1932 insect injury to cotton occurred throughout the whole sea- 

 son. Anthonomus grandis , Boh., which was numerous in early September, infested 

 practically all the squares. 



A list is given of 199 species, representing 61 families, of insects trapped 

 in a cotton field during the period of mid- June to the end of August. The trap 

 consisted of 2 pieces of screen wire tacked to frames which were nailed together 

 to form a right angle and attached to 3 poles fixed in the ground in a triangle so 

 that the bottom edges of the frames were about 3 feet above the ground. The wire 

 was thickly coated at regular intervals with an adhesive. 



1951 - Farrar, M. D., and John K. Reed. Methods for evaluation of cotton insecticides. 

 J. Econ. Ent. 44(6):943-945. 



By use of the vacuum duster technique, finished cotton dusts may be com- 

 pared under laboratory conditions against the adult boll weevil. Adult boll weevils 

 were reared from dropped cotton squares. On the third day they were caged onto 

 cotton plants dusted with a commercial cotton dust mixture. Data obtained after 

 72 hours of exposure may be used in evaluation of the insecticidal property of each 

 dust. Included are descriptions of apparatus and techniques. 



1954 - Babers, Frank H., C. C. Roan, and R. L. Walker. Tagging boll weevils with 

 radioactive cobalt. J. Econ. Ent. 47(5):928-929. 



Describes methods of tagging boll weevils with Co°0 and p3<-. Adult weevils 

 were tagged by emersion in aliquots of a working salt solution of the radioactive 

 materials (activity - 6.6 X 105 C/M/ml). Wetting agents greatly increased the 

 amount of radioactive solution retained by the weevil. 



Tests were also made to introduce the radioactive materials into cotton 

 plants. The stem of a small portion of growing cotton plant was immersed in a 

 salt solution. Contrary to the rapid movement of p32 f the Co°" was slowly ab- 

 sorbed and it was several hours before appreciable radioactivity was present in 

 the leaves. After 24 hours all portions of the plant were active, especially the 

 cotton in the immature bolls. The acidity of the solution in which the stems were 

 immersed had decreased from 8 x 1()5 + 890 C/M/ml. to 6 x 105 + 775 C/M/ml., 

 showing that more of the cobalt had disappeared from the solution than was lost 

 due to the water uptake of the plant. 



1959 - Brazzel, J. R., B. G. Hightower, and T. L. Pate. A new method for the control of 

 boll weevils. Tex. Agr. Expt. Sta. Prog. Rpt. 2110. Oct. 9. 



A late season chemical and control program at College Station in 1959 

 showed promise in reducing the overwintered population of boll weevils. This re- 

 duction appears to be great enough to delay the start of boll weevil control pro- 

 grams the following year to effect substantial savings in insecticide costs. The 

 program consists of chemical treatments just prior to and during the harvest 

 period to prevent the weevil from going into diapause, the physiological condition 

 in which they survive the winter. These insecticide treatments are followed by 

 stalk destruction if harvest is completed before frost kills the cotton. Results 

 obtained to date indicate this practice may be an effective eradication measure. 



1959 - Clark, E. W., A. L. Williamson, and C. A. Richmond. A collecting technique for 

 pink bollworms and other insects using a Berlese funnel with an improved heater. 

 J. Econ. Ent. 52(5): 1010- 1 01 2. 



Through the use of heat, larvae of nondiapause pink bollworm, boll weevil, 

 greater wax moth ( Galleria mellonella L.), a phorid fly (Megaselia sp.), and 



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