| Abstrakt: |
Carbine at 2.3 oz, Ammo at 5.1 fl-oz, Orthene 97 at 0.75 lbs, Vydate at 17 fl-oz, Centric at 2.5 oz and Diamond at 10.5 fl-oz were evaluated for their efficacy to Lygus in late-season cotton in Hockley County, TX. Diamond and Carbine, as expected since being an IGR and anti-feedent, respectively, were somewhat slow acting, but by 6 DAT (days after treatment) the total number of Lygus were statistically equivalent and lower than the untreated for all the insecticides. However, the Centric plots had more adults than the other insecticides except Diamond. At 6 DAT, the untreated plots were averaging about 48% of the bolls with external Lygus feeding damage, and about 30% of the bolls with internal feeding damage. Bolls from all of the insecticide treatments had fewer external feeding marks than the check. External feeding damage was similar among the insecticides except Centric had more damage than Ammo. Results were similar for the percentage of bolls with internal damage, but Centric did not differ from the check. [ABSTRACT FROM AUTHOR] |
