Efficacy of different insecticides against jassid and cutworm on sugarbeet crop
2005
Zubair, K.
The studies on efficacy of pesticides and bio-pesticides in controlling jassid and cutworm on sugarbeet crop were conducted Lorsban, Bio-Neem oil and Neem powder were sprayed twice. The pretreatment counts of the pest were recorded one day before spray. The post-treatment observations were taken after 24, 72 hours, one week and two weeks. In first spray against jassid, Lorsban was most effective insecticide and showed highest mortality (93.42) followed by Bio-Neem oil (79.16) and Neem powder (78.56). In the first spray against cutworm Lorsban has showed highest reduction percentage (86.00) and followed by Neem powder (66.35) and Bio-Neem oil (56.56). In second spray again Lorsban has showed good knockdown of jassid (92.72) followed by Neem powder (54.90) and Bio-Neem oil (50.95). In Second spray against cutworm, the highest reduction percentage was observed in Lorsban (98.69) followed by Bio-Neem oil (81.4) and Neem powder (70.84). It was concluded that jassid and cutworm were the most serious insect pests on sugarbeet crop. The chemical Lorsban 40 EC was the most effective pesticide on sugarbeet jassid and cutworm by showing reduction percentage 93.07 and 92. 345 respectively. After Lorsban 40EC, Bio-Neem oil was more effective on cutworm followed by jassid; but Neem powder was more effective on jassid followed by cutworm.
显示更多 [+] 显示较少 [-]