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Venugopal Rao, N.
- Development of an Integrated Pest Management Module for Cotton in Andhra Pradesh
Abstract Views :208 |
PDF Views:151
Authors
Affiliations
1 Regional Agricultural Research Station, Lam Farm, Guntur-522 034, Andhra Pradesh, IN
1 Regional Agricultural Research Station, Lam Farm, Guntur-522 034, Andhra Pradesh, IN
Source
Journal of Biological Control, Vol 9, No 2 (1995), Pagination: 105-108Abstract
In an attempt to develop an integrated pest management (IPM) strategy for cotton pests four modules comprising integrated pest control tactics, judicious use of pesticides, farmer's practice and untreated control were evaluated. The approach, consisting of limited use of pesticides coupled with biocontrol measures and other resistance management strategies, was found economically viable for sustaining cotton production in addition to conserving and augmenting natural enemies in the cotton ecosystem. IPM practice also resulted in a higher cost:benefit ratio (1:5.3 and 1:6.1) in comparison with the farmer's practice (1:2.5 and 1:1.6).Keywords
Cost, Benefit Ratio, Integrated Pest Management Module, Intercrop, Natural Enemies.- Influence of Host Plant Architecture and Insecticidal Schedule on the Natural Enemies of Cotton Whitefly, Bemisia tabaci Genn.
Abstract Views :192 |
PDF Views:102
Authors
Affiliations
1 Regional Agricultural Research Station, Lam, Guntur 522 034, IN
2 Regional Agriculture Research Station, IN
3 Department of Entomology, College of Agriculture, IN
1 Regional Agricultural Research Station, Lam, Guntur 522 034, IN
2 Regional Agriculture Research Station, IN
3 Department of Entomology, College of Agriculture, IN
Source
Journal of Biological Control, Vol 3, No 2 (1989), Pagination: 83-86Abstract
The glabrous varieties of cotton favoured higher parasite activity on whitefly, recording more than 40 percent parasitisation, while hairy varieties recorded higher number of predatory mites. The integrated management programme involving natural insecticides of plant and animal origin was significantly superior in conserving the parasite and predatory populations compared to the existing (bollworm based) schedule as well 858 schedule involving some new and highly effective insecticides.Keywords
Parasites, Predators, Bemisla tabaci, Cotton Varieties, Integrated Management Programme.- Natural Enemies of Cotton Whitefly, Bemisia tabaci Gennadius in Relation to Host Population and Weather Factors
Abstract Views :187 |
PDF Views:118
Authors
Affiliations
1 Regional Agricultural Research Station, Lam, Guntur 522 034, IN
2 Regional Agricultural Research Station, Nandyal, IN
1 Regional Agricultural Research Station, Lam, Guntur 522 034, IN
2 Regional Agricultural Research Station, Nandyal, IN
Source
Journal of Biological Control, Vol 3, No 1 (1989), Pagination: 10-12Abstract
The nymphal parasitism of whiteny, Bemisia tabaci Gennadius due to Eretmocerus serius, Eretmocerus sp. and an aphelinid reached 27.4 and 40.2 per cent while the predators Brumoides suturalis (F), Verania vincta, Menochilus sexmaculatus, Chrysoperla carnea (Steph.), Amblyseiuss pp. were at a level of 10.8 and 17.1 numbers per 10 leaves during January and November respectively. The incidence of fungal pathogens viz. Aspergillus sp., Paecilomyces sp. and Fusarium sp., of whitefly was high during November month by suppressing adults, nymphs and eggs to the extent of 86.6, 19.0 and 39.8 per cent respectively. In line with pest population, the parasites were also Influenced by the rainfall which showed significant negative correlations (r = 0.4275 and 0.3971 respectively). The temperatures also showed a significant correlation with the parasitism, predatory population and mortality due to fungal pathogens.Keywords
Bemisia tabaci, Phytoseiids, Fungal Pathogens, Abiotic Factors.- Effect of some Insecticides on the Parasitoids and Predators of the Cotton Whitefly, Bemisia tabaci Genn.
Abstract Views :227 |
PDF Views:122
Authors
Affiliations
1 Regional Agricultural Research Station, Lam, Guntur 522034, A.P., IN
2 Regional Agricultural Research Station, Nandyal, IN
3 Department of Entomology, College of Agriculturc, Rajendranagar, Hyderabad 500 030, IN
1 Regional Agricultural Research Station, Lam, Guntur 522034, A.P., IN
2 Regional Agricultural Research Station, Nandyal, IN
3 Department of Entomology, College of Agriculturc, Rajendranagar, Hyderabad 500 030, IN
Source
Journal of Biological Control, Vol 4, No 1 (1990), Pagination: 4-7Abstract
In an evaluation of the effects of different insecticides against the natural enemies of whitefly, Bemisia tabaci Genn., cotton crop treated with synthetic pyrethroids recorded 9.7 per cent parasitism due to aphelinid and it was on par with endosulfan. Pyrethroids were highly detrimental to the predators, recording the lowest number of 2 to 4.3 of early and 0.3 to 1.2 late occurring predators per 10 leaves. The insecticides of natural origin showed 15.8 to 18.1 per cent parasitoid activity and maintained 3.4 to 7.9 predators/l0 leaves. Triazophos and deltaphos recorded the lowest parasitism and predation levels, whereas fenpropethrin recorded a higher level (14.8 per cent) of parasitism.Keywords
Aphelinid Parasitoid, Predators, Bemisia tabaci, Synthetic Pyrethroids, Natural Insecticides.- Control of Pigeonpea Pod Borer, Helicoverpa armigera (Hb n.) with Nuclear Polyhedrois Virus
Abstract Views :219 |
PDF Views:125
Authors
Affiliations
1 Regional Agri. Res. Station, Lam, Guntur - 522 034, IN
2 Central Biological Control Station, Somajiguda, Hyderabad - 500 482, IN
1 Regional Agri. Res. Station, Lam, Guntur - 522 034, IN
2 Central Biological Control Station, Somajiguda, Hyderabad - 500 482, IN