175 



Grandlure was attractive to females at amounts as low as 5x10"^ mg but was 

 most attractive at amounts ranging from 2.5 to 50 mg. Grandlure remained 

 attracti /e longer at a given temperature when evaporation was reduced by 

 placing a stopper or cover on the holding container. When a cotton plant 

 extract was added to grandlure, its attractiveness was increased markedly. 



338. Harding, J. A. 1970. Field tests for control of boll weevils, cabbage 

 loopers, Heliothis and whiteflies on cotton, Weslaco. Tex. Agric. Exp. 

 Stn. Consol. Prog. Rep. PR 28A0-28A5, pp. 5-7. 



Sixteen chemicals applied with ground equipment at 4.3 gallons of formulation 

 per acre \;ere evaluated for cotton insect control in three experiments. Al- 

 though adequate control was not obtained in every case, the toxicants which 

 were statistically superior are listed for each insect with the rate per acre 

 in parentheses: Boll weevil-toxaphene + methyl parathion (2.0 + 1.0), carbaryl 

 + methyl parathion (2.0 + 0.5), Bayer 93820 (1.0), Union Carbide 34096 (1.5), 

 Pennsalt TD 5032 (0.5), Ciba 9491 (2.0) and Monitor^ (1.5). Cabbage looper- 

 Ciba 9491 (2.0), Monitor® (1.5), Torak<® (2.0), Galecron® (1.0), EPN® (1.0), and 

 Azodrin® (1.0). Heliothis sp. infestations were very light, but parathion (1.5), 

 Pennsalt TD 5032 (0.5), Galecron (1.0) and Ciba 9491 (2.0) offered promise. 

 White!ly control was recorded in only one test which compared two results of 

 mixtures and one chemical with those of untreated plots. Azodrin (1.0) was 

 outstanding.-f or control followed by carbaryl + methyl parathion (2.0 + 0.5). 

 Noticeable phytotoxicity was noted in plots treated with Ciba 9491 (2.0) and 

 Pennsalt TD 5032 (0.5). 



339. 1975. Boll weevil and tobacco budworm field control tests in the 

 Lower Rio Grande Valley of Texas, 1974. Tex. Agric. Exp. Stn. Prog. 

 Rep. PR-3362, 3 pp. 



Several of the nev/er insecticide compounds were compared for boll weevil 



