Management of sucking insect-pests infesting sunflower
Loading...
Files
Date
2019-05-30
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani
Abstract
Investigations on bio-efficacy of different insecticides and screening germplasm lines against sunflower leafhopper and whitefly were carried out at Oilseeds Research Station, Latur, Maharashra during Rabi, 2017-18.
All the insecticides were found to be significantly superior in reducing the population of sunflower leafhoppers and whiteflies. Among all the insecticides imidacloprid 0.02 per cent was significantly superior for managing leafhopper population followed by thiamethoxam 0.02 per cent, flonicamide 0.12 per cent, spiromesifen 0.04 per cent, triazophos 0.2 per cent and profenophos 0.2 per cent. Moreover, imidacloprid 0.02 per cent also significantly superior for managing whitefly population followed by spiromesifen 0.12 per cent, thiamethoxam 0.02 per cent, flonicamide 0.12 per cent, triazophos 0.2 per cent and profenophos 0.2 per cent. Significantly higher seed yield (2450 kg/ha) of sunflower was recorded in treatment imidacloprid 0.00356 per cent however, it was found at par with treatment thiamethoxam 0.005 per cent (2264 kg/ha), treatment spiromesifen 0.02748 per cent (2207 kg/ha) and treatment flonicamide 0.02 per cent (2150 kg/ha). Treatment triazophos 0.08 per cent recorded 1880 kg/ha seed yield while treatment profenophos 0.1 per cent recorded 1567 kg/ha seed yield. However, the lowest seed yield of 1026 kg/ha was registered in treatment untreated control. The highest ICBR (1:20.42) was recorded with treatment imidacloprid which was followed by thiamethoxam 0.02 per cent (1:17.32), flonicamide 0.04 per cent (1:8.85), triazophos 0.2 per cent (1:7.97), spiromesifen 0.12 per cent (1:5.62) and profenophos 0.2 per cent (1:4.59).
Among 30 germplasm screened for leafhopper and whiteflies incidence, none of the entry showed ‘Highly Resistant’ reaction against leafhoppers while only two germplasm lines viz., GMU-520 and AKSF-6-39 showed ‘Resistant’ reaction. Sixteen germplasm lines were found as ‘Moderately Resistant’ and eleven as ‘Susceptible’. Whereas, none of the germplasm recorded ‘Highly Resistant’ reaction against whiteflies while three germplasm lines viz., IIOSH-15-10, GMU-520 and AKSF-6-39 were categorized as ‘Resistant’ germplasms. Twenty germplasm lines were found ‘Moderately Resistant’ and six as ‘Susceptible’. The check Modern was found ‘Highly Susceptible’ to leafhopper and whiteflies.
Among 30 germplasm lines screened for respective sucking pests of sunflower, most of the germplasm lines were found moderately resistant to leafhoppers and whiteflies.
Description
Keywords
null