| effectiveness of two insect growth regulators against bemisia tabaci (gennadius) (homoptera: aleyrodidae) and helicoverpa armigera (hübner) (lepidoptera: noctuidae) and their impact on population densities of arthropod predators in cotton in pakistan. | field efficacies of two insect growth regulators (igrs) at two recommended application rates, buprofezin at 370 and 555 g ai ha(-1) and lufenuron at 37 and 49 g ai ha(-1), were determined against the sweet potato whitefly, bemisia tabaci (gennadius), and the cotton bollworm, helicoverpa armigera (hübner), in experimental plots of cotton at the directorate of cotton research, faisalabad, pakistan. adverse effects of the igrs on populations of associated arthropod predators, namely geocorids, chry ... | 2006 | 16862616 |
| cotton leaf curl virus disease. | cotton is one of the most important crops of pakistan, accounting for over 60% of foreign exchange earnings. the present epidemic of cotton leaf curl disease (clcud) originated in the punjab region near the city of multan and was first reported in 1985, although it was noted in this region as early as 1967. by the early 1990s, clcud had become the major limitation to cotton production in pakistan and it has now spread into india and, more recently, south and west into other provinces of pakistan ... | 2000 | 11137169 |