Management of Pod Borer Helicoverpa armigera (Hubner) in Chickpea Ecosystem
| dc.contributor.advisor | B.S. Nandihalli | |
| dc.contributor.author | Shivaleela I.U. | |
| dc.date.accessioned | 2016-11-21T18:36:08Z | |
| dc.date.available | 2016-11-21T18:36:08Z | |
| dc.date.issued | 2012 | |
| dc.description.abstract | Studies on survey, surveillance and management of chickpea pod borer, Helicoverpa armigera (Hubner) were conducted at AC, Bijapur and also in farmer’s field at Kallolli village of Jamkhandi taluk Bagalkot during 2011-12. The activity of chickpea pod borer was more or less same in all the taluks of Bijapur district. However, the maximum pod borer larvae was recorded in Sindagi and Indi taluks (upto 10.83 larvae /mrl), followed by Basavana Bagewadi, Bijapur and Muddebihal. Chickpea as well as intercrops grown in chickpea based intercropping systems recorded lower pod borer and its natural enemy, Campoletes chlorideae activity compared to chickpea sole crop. The surveillance of pod borer over a season indicated that the incidence of the pod borer activity was noticed from 4th week after sowing reaching peak at 8th week after sowing and then onwards decreased as the crop reaching maturity. Chickpea + wheat (3:6) recorded lowest pod borer larvae/ mrl followed by chickpea + safflower (4:2), chickpea + sorghum (1:2), chickpea + sorghum (2:4) and chickpea + sorghum sprinkled. The activity of the C. chlorideae fluctuated with the host population over a season. Chickpea + wheat intercropping recorded significantly highest crop equivalent yield of chickpea (7.50 q/ha) followed by chickpea + safflower (7.01 q/ha), chickpea + sorghum sprinkled (6.97 q/ha), chickpea + sunflower (6.60 q/ha), which were on par with the sole crop (7.00 q/ha). Chickpea + sorghum intercropping recorded lowest crop equivalent yield of chickpea (6.15 q /ha). Among the different spray sequences, rynaxypyr 20 SC- flubendiamide 480 SCemamectin benzoate 05 SG treatment was found effective in recording lower pod borer larvae and recorded the lower number of C. chlorideae cocoon compared to the sequential sprays containing botanicals. With respect to cost effectiveness, rynaxypyr- flubendiamideemamectin benzoate proved to be the best economical treatment as realized by the highest benefit (` 4000/ha) and CB ratio (1:2). The next best treatments were profenophos- Btquinolphos with benefit of ` 2080/ ha and CB ratio of 1:1.7 and neem oil- flubendiamideacephate with benefit of ` 1880/ ha and CB ratio (1:1.6). | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/86833 | |
| dc.publisher | UAS, Dharwad | en_US |
| dc.research.problem | Management of Pod Borer Helicoverpa armigera (Hubner) in Chickpea Ecosystem | en_US |
| dc.sub | Agricultural Entomology | en_US |
| dc.these.type | M.Sc | |
| dc.title | Management of Pod Borer Helicoverpa armigera (Hubner) in Chickpea Ecosystem | en_US |
| dc.type | Thesis | en_US |