A20 



824. Slosser, J. E. 1978. The influence of planting date on boll weevil 

 management. Southwest. Entomol. 3: 241-246. 



Boll weevil, Anthonomu3 grandis Boheman, population development and cotton 

 squaring trends are compared between an early planted cotton field and 

 several fields with later planting dates. In the early planted field, peak 

 weevil populations were 4.6 times greater than in the late planted fields, 

 and high weevil populations delayed plant maturation in the early planted 

 field. As many weevil punctured squares were produced in the 1 early plant- 

 ed field as in 4 of the late planted fields. The early field produced 0.6 

 bales/ha as compared to an average of 1.3 bales/ha in the later planted fields. 



825. , and Boring, E. P., III. 1980. Shelterbelts and boll weevils: a 

 control strategy based on management of overwintering habitat. Environ. 

 Entomol. 9: 1-6. 



Present-day boll weevil, Anthonomus grandis Boheman, problems in the northern 

 Rolling Plains of Texas are linked to ehelterbelt plantings made during the late 

 1930' s. Available evidence suggests that boll weevil populations surviving the 

 winter in 0.6 ha of shelterbelt litter may infest and reach damanging levels in 

 13.2 ha of cotton by mid-Aug. Where heavy sustained boll weevil infestations 

 are not controlled, an estimated $1786 is lG*t due to yield reduction in the 

 l^re-Ttar-- Several -potential solutions to the bo]l weevil problem are presented. 

 These solutions include habitat destruction or management, and the use of in- 

 secticides, biotic agents, and fire. The use of these techniques is extended 

 to the management of other habitat types such as rangeland shinnery oak, Quercus 

 havardii Rybd. An impending move to renew shelterbelt plantings, particularly 

 in the High Plains where boll weevils do not overwinter, is discussed. The 

 lessons learned in the Rolling Plains regarding the interaction bet>"ien boll 

 weevils, shelterbelts, and cotton should be taken as a serious guideline to 

 the management of new shelterbelt plantings. 



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