Insecticide Resistance Management of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) and its effect on pests and yield of cotton in North India
Autor: | Th. Basedow, N. Aggarwal, D. S. Brar |
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Rok vydání: | 2006 |
Předmět: |
0106 biological sciences
Fenvalerate biology Quinalphos Methomyl Plant Science Horticulture Helicoverpa armigera biology.organism_classification 01 natural sciences Cypermethrin Lepidoptera genitalia 010602 entomology chemistry.chemical_compound chemistry Agronomy Noctuidae Agronomy and Crop Science Endosulfan 010606 plant biology & botany |
Zdroj: | Journal of Plant Diseases and Protection. 113:120-127 |
ISSN: | 1861-3837 1861-3829 |
Popis: | An insecticide resistance management (IRM) strategy was devised and evaluated for the management of cotton bollworm, Helicoverpa armigera (Lep., Noctuidae) in cotton in on-farm research in Punjab state, India, in 2003–2004. The adoption of the IRM programme, based mainly on economic thresholds and on the use of selectively acting insecticides, resulted in significantly lower incidence of cotton bollworms and of homopteran pests in conjunction with a reduced use of insecticides. Beneficials (predatory bugs and spiders) tended to be more frequent. The number of insecticide sprays per season in IRM plots (9.5) was less than in non-IRM plots (14.5). Laboratory tests showed that the IRM strategy resulted in a significant decline (1 to 2.9-fold) in resistance of H. armigera larvae to cypermethrin, fenvalerate, endosulfan, methomyl, quinalphos and chlorpyriphos. A significant cotton yield increase of 28.7% (0.62 t/ha) was observed. The economic analysis showed a net return of $ 291.3/ha in IRM plots compared to non-IRM plots but the costs of advice and scouting are not included here. The results demonstrated the superiority of IRM strategy over the present farmers practice (unnecessary use of insecticides, practically no monitoring), and thus help in reviving the confidence of traditional cotton growers in a more sustainable cotton cultivation. |
Databáze: | OpenAIRE |
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