Biology and Management of Rice Gall Midge, Orseolia oryzae (Wood-Mason)
| dc.contributor.advisor | Javaregowda | |
| dc.contributor.author | Archana D. | |
| dc.date.accessioned | 2016-11-11T13:52:37Z | |
| dc.date.available | 2016-11-11T13:52:37Z | |
| dc.date.issued | 2011 | |
| dc.description.abstract | Biology of rice gall midge Orseolia oryzae (Wood-Mason) was studied in detail during August to October under laboratory conditions at ARS, Sirsi. Egg, maggot and pupal periods occupied 2.50±1.41, 9.00±0.71 and 4.00±0.71 days, respectively. Average fecundity was 96.5±14.85 eggs/female and total life cycle occupied 17.50±3.54 days. Among the rice varieties screened at ARS, Sirsi, forty three were moderately susceptible, nineteen were moderately resistant, ten were susceptible and remaining eight proved to be highly resistant. None of the tested varieties were neither resistant nor highly susceptible at 30 and 50 DAT compared to susceptible check Jaya (21.29% SS). Similarly, among the 48 hybrids screened, forty one were susceptible, two were highly susceptible and remaining five were highly resistant. None of the hybrids could be categorized under resistant, moderately resistant and moderately susceptible group. Among thirty five rice varieties screened at ZARS, Brahmavara, four rice genotypes proved highly resistant (0% SS); thirty one genotypes reacted highly susceptible (>25% SS) but none of the genotypes were resistant (<1% SS); moderately resistant (1-5% SS); moderately susceptible (6-10% SS) and susceptible (11-25% SS) at 50 DAT. Fipronil 40 WG @ 1 g/l was on par with carbofuran 3G @ 10 kg/ha for incidence of silver shoot (8.06 and 8.81), grain (65.98 and 64.05) yield and straw (69.73 and 67.01 q/ha) yield followed by profenophs 50 EC @ 2 ml/l. Among the botanicals evaluated, soap nut extract + neem oil @ 2.5% recorded least per cent silver shoot (17.07) resulting in increased grain (51.19 q/ha) and straw yield (53.15 q/ha) followed by Randia spinosa @ 20 kg/ha, Gnidia glauca leaf extract @ 5% and nimbecidine @ 3 ml/l. Higher C:B ratio of 1:3.04 was obtained from carbofuran 3G @ 10 kg/ha followed by profenophos 20 EC @ 2 ml/l (1:2.77) and fipronil 40 WG @ 1.0 g/l (1:2.52). | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/85111 | |
| dc.publisher | UAS, Dharwad | en_US |
| dc.research.problem | Biology and Management of Rice Gall Midge, Orseolia oryzae (Wood-Mason) | en_US |
| dc.sub | Agricultural Entomology | en_US |
| dc.subject | Agricultural Entomology | en_US |
| dc.theme | Biology and Management of Rice Gall Midge, Orseolia oryzae (Wood-Mason) | en_US |
| dc.title | Biology and Management of Rice Gall Midge, Orseolia oryzae (Wood-Mason) | en_US |
| dc.type | Thesis | en_US |