STUDIES ON THE MANAGEMENT OF POD BORER, Helicoverpa armigera (Hubner) IN PIGEONPEA ECOSYSTEM
| dc.contributor.advisor | PATIL, B. V. | |
| dc.contributor.author | SUHAS, YELSHETTY | |
| dc.date.accessioned | 2019-10-10T09:29:45Z | |
| dc.date.available | 2019-10-10T09:29:45Z | |
| dc.date.issued | 2001-08-06 | |
| dc.description.abstract | Studies undertaken at Agricultural Research Station Gulbarga during 1997-98 and 1998- 99 seasons indicated that house sparrow, Passar domesticus (Linnaeus), the Conunon myna, Acridotheres tristis Latham, black drongo, Dicrurus adsimilis (Bechstein), small green bee eater Merops orierUalis Latham are the important predacious insectivorous birds on the pigeonpea pod borer, Uelicoverpa armigera (Hubner). The predatory distance of birds from perching place revealed that upto two metres these birds could pick the larvae effectively. The gut aitalysis indicated black drongo to be the most efficient predator followed by house sparrow and common myna. The small green bee eater preferred dipterans, hymenopterans and odonatens that are more beneficial dius causing reduction in natural enemy population. HaNPV @ 250LE ha-1 along with 0.5 per cent sugar and any of the UV protectants like activated charcoal, boric acid and blue at 0.1 per cent was found to record significantly lower pod damage and higher grain yield irrespective of application time as compared to HaNPV alone. Among the adjuvants, activated charcoal proved most effective recording at par higher grain yield irrespective of application time compared to other adjuvants. Though methomyl 12.5L @ 500g and profenofos 50EC @ 1500g a.i. ha-1 recorded highest occlusion both in freshly laid and older eggs die lowest dosage of methomyl (I25g a.i.ha*') was equal to highest dosage (1500g a.i.ha-1) of profenofos 50EC in terms of egg occlusion irrespective of the age of the egg. Five peak moth catches were noticed in light and pheromone traps, die longest peak was observed from 43 standard week to 52 standard week which coincided with peak reproductive stage of the crop. The multiple regression analysis indicated maximum and minimum tempeiatuie with afternoon relative humidity to influence the light and pheromone trap catches. Evaluation of different IPM modules indicated the adaptive module consisting of ovicidal application of profenofos 50EC at lOOOg a.i.ha NSKE (5.00%), HaNPV 250LE per ha followed by alphamethrin lOEC at 50g a.i. ha-1 and biointensive module consisting of application of HaNPV 250LE ha-1 hand collection. Bacillus thuringiensis l.O kg ha-1, NSKE 5 per cent followed by HaNPV 250LE ha-1 were found cost effective. However, the adaptability of biointensive IPM module depends to the larger extent on their availability. | en_US |
| dc.identifier.other | Th-5920 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810130655 | |
| dc.keywords | STUDIES ON THE MANAGEMENT OF POD BORER, | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 175 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK BANGALORE | en_US |
| dc.sub | Agricultural Entomology | en_US |
| dc.subject | null | en_US |
| dc.theme | Helicoverpa armigera (Hubner) IN PIGEONPEA ECOSYSTEM | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | STUDIES ON THE MANAGEMENT OF POD BORER, Helicoverpa armigera (Hubner) IN PIGEONPEA ECOSYSTEM | en_US |
| dc.type | Thesis | en_US |