Varietal Reaction Of Cashew To Tea Mosquito,Helopelt1s Antonii S. (Hemiptera: Miridae), A Major Pest Of Cashew
| dc.contributor.author | Sathiamma, B. | |
| dc.date.accessioned | 2014-08-19T10:31:12Z | |
| dc.date.available | 2014-08-19T10:31:12Z | |
| dc.date.issued | 1980 | |
| dc.description.abstract | Helopeltis antonii is the most serious pest of cashew causing shoot and inflorescence blight. Its attack results in more than 30% loss in yield. The maximum pest population is observed during February— March and October—November depending on the new flush and panicle emergence. All indigenous accessions of cashew available in the germplasm collection of the Central Plantation Crops Research Institute, Regional Station, Vittal showed infestation by H. antonii. Seventy four accessions were selected during 1975 — 1977 for screening for field tolerance to tea mosquito attack. These included 45 accessions collected from Bapatla, 16 from Vridhachalam, 8 from Vengurla, 4 from Anakkayam and one from Vittal (local). Two sample trees per accession were selected for observations. Observations on shoot and panicle attack and count on nymph and adult bugs present on 100 shoots/panicles per tree were recorded respectively at 45, 30 and 10) days interval. Data revealed that the mean percentage of shoot attack ranged from 1.8 to 43.3; panicle attack from 5.5 to 543 and mean pest population from 1.5 to 105.5. Shoot and panicle damage and population of nymphs and adults were observed in all the accessions. But significant difference was observed between accessions in damage and pest population. | en_US |
| dc.identifier.citation | In: Proceedings, PLACROSYM II, UPASI, Ootacamund, 26-29 Jun. 1979. Edited by C. S. Venkataram and others 1980 p-530-534 | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/4860 | |
| dc.language.iso | en | en_US |
| dc.title | Varietal Reaction Of Cashew To Tea Mosquito,Helopelt1s Antonii S. (Hemiptera: Miridae), A Major Pest Of Cashew | en_US |
| dc.type | Article | en_US |