129 



It is apparent that the boll weevil pheroraone trap is extremely useful in 

 detecting incipient populations of boll weevil for survey and detection. 

 The information generated on relative seasonal abundance and movement has 

 merit for use in boll weevil control programs. The boll weevil pheromone 

 trap also has been helpful in the evaluation of boll weevil suppression 

 programs when comparing infested to uninfcsted cotton. Its use in pin- 

 pointing deficiencies within these programs has been proved. As yet, 

 sufficient information is not available to totally rely on trap catches 

 when quantitatively comparing one cirea of boll weevil infested cotton with 

 another. Currently, one must support trap catches with manual field counts 

 to validate such a comparison. In the future and if trap catches can be 

 related to absolute field counts, the boll weevil pheromone trap will increase 

 in value in the battle against this j^est. 



239. ; Sprott, J. M.; Lacewell, R. D.; Parker, R. D.; Buxkemper, W. E. ; 



Bagley, W. E.; and Norman, J. W. 1976. A practical method of economically 

 e/aluating an operational cotton pest management program in Texas. 

 J. Econ. Entomol. 69: 211-214. 

 Procedures to determine the economic validity of an operational pest management 

 program were devised. An economic evaluation using the Texas cotton pest manage- 

 ment program as a prototypic example showed increased per acre net returns by 

 program participants over nonpar ticipating producers of $55.31, $17.95, and 

 $30.59 in the Rio Grande Valley, Blacklands, and Trans-Pecos program areas, 

 respectively, in 1973. In 1974, per acre net returns were increased by $15.72, 

 $18.90, and $54.13 for the same 3 respective areas. 



