1924 - Anonymous. The insect pest survey bulletin. U. S. D. A. IV, No. 1, 22 p., 

 Multigraph, Apr. 1. Wash. 



"Severe weather in the Southern States seems to have killed many hibernating 

 boll weevils." 



1924 - Schoene, W. J. Fourteenth report of the State entomologist and plant pathologist. 



Va. State Crop Pest Comn. Q. B. 4:5-27, 6 fig. Jan. Blacksburg. 



During the period from October 1921 to September 1923, covered by this 

 report, 2 very important insect pests have appeared in Virginia, namely, the 

 cotton boll weevil and Epilachna corrupta (Mexican bean weevil). Cotton is a 

 relatively unimportant crop in Virginia; the soil is suitable only in a few lo- 

 calities, and cotton is grown only in rotation with other crops. The low winter 

 temperatures in Virginia may also destroy many of the weevils. An estimate 

 is tabulated, of the loss anticipated in 1924 on account of the weevils and general 

 recommendations for reducing infestation are given. 



1925 - Jordan, H. Toll of the cotton boll weevil. N. Y. Commercial, reprint, 8 p. 



July 7. New York. 



The situation resulting from the gradual extension of the cotton boll weevil 

 over the cotton crop from southwest Texas to Virginia during the past 30 years 

 is reviewed, an analysis of the position in each State being given. An examina- 

 tion of the facts shows that no State, after infestation, has been able to regain its 

 former yield per acre (with the possible exception of Oklahoma in 1924). 



Most of the States would be obliged to double their acreage in order to 

 obtain the same productive yield as under pre-weevil conditions. Experience 

 has shown that there is no profit to the grower unless at least one bale of cotton 

 per acre can be produced, and during the years 1920-1924, the cotton States 

 showed an average yield of 1 bale per 3.2 acres. 



It is suggested that the future production of cotton must be undertaken on a 

 restricted acreage and a highly intensive system of cultivation. The average 

 farmer cannot successfully cultivate and handle more than 5 to 7 acres under 

 cotton per plough under boll weevil conditions. Demonstrations of cotton growing 

 have proved of incalculable value and well worth the outlay entailed. 



1926 - Schoene, W. J. Fifteenth report of the State entomologist and plant pathologist 



1924-25. Va. State Crop Pest Comn. Q. B. 7(4):5-31, 3 fig. Jan. Blacksburg. 



"Anthonomus grandis Boh. has now spread over the entire cotton growing 

 territory, and serious losses from it may be expected in 1926 and 1927." 



1929 - Newell, W. Comments on entomology in the South during the past twenty-five 

 years. J. Econ. Ent. 22(5):732-735. 



Contains brief history of the spread of the boll weevil. 



1931 - Coad, B. R. Insects captured by airplane are found at surprising heights. 

 U. S. D. A. Ybk, 1931:320-323. 



The boll weevil has been found at as high as 1,000 ft. elevation. 



1931 - Howard, L. O. The insect menace. 347 p. The Century Co. New York. 



To instance the great progress that has taken place during the last half 

 century in the United States in appreciation of the importance of taking adequate 

 measures to combat dangerous pests, a comparison is drawn between the amount 

 of funds and work expended on the Mexican boll weevil from the commencement 

 of outbreaks in 1894. 



1934 - Sanborn, C. E. History and control of the boll weevil in Oklahoma. Okla. Agr. 

 Expt. Sta. B. 222:4-9. June. 



Traces introduction and history of weevil in Oklahoma. 



1937 - Audant, A., and A. Occenad. The Mexican cotton boll weevil, Anthonomus Gra ndis 

 Boheman, in Haiti. Puerto Rico U. J. Agr. 21(l):69-76, 1 map. Jan. 

 Rio Piedras. 



Anthonomus grandis Boh. which was formerly confined to the southwestern 

 United States, the cotton growing regions of the Pacific, and Gulf coasts of Mexico, 



170 



