Naturally occurring arthropods on cotton strains grown under different levels of pest management
1998
Aslam, M. (University of Arid Agriculture, Rawalpindi (Pakistan). Dept. of Entomology) | Chalfant, R.B. | Herzog, G.A.
Five cotton strains (including Stoneville 213, a susceptible cultivar as check) were planted in 3 levels of pest management (A- intense, B-intermediate and C-low) at the University of Georgia, Coastal Plain Experiment Station, Tifton, GA in 1987 to estimate the naturally occurring arthropods (both harmful as well as beneficial) on them. Stoneville 213 and MISCOT 7913-84 showed the highest number or beneficial and harmful arthropods. During early season of the crop, the number of beneficial and harmful arthropods remained at almost equal low level. The harmful arthropods were at a peak in the last week of July or the first week of August, while the beneficial arthropods were at intermediate to high numbers. Then the number of the beneficial arthropods remained at intermediate level while the number of the harmful arthropods remained at low to intermediate. These studies also suggest that in Georgia, aphids may infest this crop and that applications of insecticides to control other insects may result in the destruction of populations of natural enemies of aphids e.g. Geocoris spp. Coleophora pupillata and Hippodamia convergens.
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