447 



volume (ULV) ipplications of pesticides minimized drift and increased the amount 

 of material deposited on the target area. The 8-row sprayer consists of 8 boom- 

 mounted external atomizers (1 per row) that spray finely atomized material into 

 air blasts of about 85 mph that are directed into the plants. The rapidly moving 

 air replaces the carrier water used in a conventional water-oil emulsion sprayer. 

 ULV applications of Azodrin® (3-hydroxy-N-methyl- cis- crotonamide dimethyl phos- 

 phate) , technical grade Bay 41331 (0, 0-dimethyl 0-4nitro-m-tolyl phosphoro- 

 thioate) , and toxaphene + DDT were compared with conventional spray applications 

 of toxaphene + DDT and Azodrin against various cotton pests. Results against 

 the boll weevil, Anthonomus grandis Boheman; the bollworm, Heliothis zea 

 (Boddie) ; and the carmine spider mite, Tetranychus cinnabarinus (Bosiduval) , 

 obtained with materials applied with the new ULV sprayer were at least as good 

 as those obtained when the insecticides were applied with the conventional 

 sprayer. 



877. ; Hopkins, A. R.; and Roach, S. H. 1972. Suppression of emerging early- 

 season boll weevils using integrated control. J. Econ. Entomol. 65: 

 1663-1666. 

 In 1968 and 1969, field experiments were conducted at Florence, South Carolina, 

 against populations of emerging overrwintered Anthonomus grandis Boheman. In 



1968, complete suppression was not achieved with an integrated control program 

 consisting of foliar sprays of toxaphene + DDT + methyl parathion, plus in-furrow 

 and sidedress applications of aldicarb, but the population of overwintered boll 

 weevils was reduced 57% below that resulting from foliar treatment alone. In 



1969, one integrated program consisting of foliar sprays of toxaphene + DDT + 

 methyl parathion plus the in-furrow and sidedress applications of aldicarb, and 

 another consisting of the same treatments plus boll weevil pheromone traps, sup- 

 pressed the population of emerging overwintered boll weevils. 



