Epiphytology of mungbean Yellow Mosaic Virus (MYMV) in Mungbean (Vigna radiata (L.) Wilczek) Under South Gujarat Condition
| dc.contributor.advisor | Mahatma, Lalit | |
| dc.contributor.author | Dahyabhai, Patel Vinay Kuamr | |
| dc.date.accessioned | 2018-08-21T03:33:04Z | |
| dc.date.available | 2018-08-21T03:33:04Z | |
| dc.date.issued | 2011-06 | |
| dc.description.abstract | Mungbean which is also known as green gram (Vigna radiafa (L.) Wilczek), is the third most important pulse crop grown in India. Mungbean suffers from several diseases with substantial losses in yield. Of all the diseases, Mungbean Yellow Mosaic Virus (MYMV) disease is the most destructive, which takes heavy toll in Indian subcontinent and adjacent areas of South-East Asia. Nevertheless, not much work has been carried out on epiphytology and estimation of yield losses due to the disease. Therefore, the present investigation was carried out on the topic entitled "Epiphytology of Mllngbean Yellow Mosaic Virus (MYMV) in mungbean (Vigna radiala (L.) Wilczek) under south Gujarat condition". During the survey, occurrence of Munghean Yellow Mosaic Virus (MYMV) in munghean was noticed in serious proportion causing heavy losses in Navsari and Surat district. The disease incidence in Surat and Navsari districts ranged from OR.66 to 5H.96 per cent. Fixed plot surveys were carried out at different field of NAlJ at different stages of crop in different varieties. None of the variety showed resistance against the disease. The first symptoms of the disease was ohserved as early as the first tri foliate emerged and up-to 79 to 100 per cent incidence was recorded at the time of crop maturity. Whiteflies might have brought primary inoculums of MYMV at-least two kilometers away from the site of experiment anytime in between 14 days before the sowing of crop to the 4 days after the sowing of crop to inoculate the pathogen at the site of experimentation immediately after the emergence of the crop. Then, the virus might have spread from one plant to other plants through its vector, whitefly. Maximum numbers of whiteflies (148) were trapped at North East direction. Whereas 128, 123 and 123 whiteflies were observed in North West, South East, South West direction respectively during summer 20 I O. Average number of whiteflies on 10 plants ranged from 0 to 2.5. Whitefly population had signi ficant • • positIve correlation with maximum temperature, average temperature and relative humidity. In the present investigation 3SoC • ma:(\mum temperature, 31 .1 °C mean temperature, 90 % morning RH. 53 OJ, , • a fter noon RH and 71.5 % mean R H found to be optimum for the build-up of whitefly population. Disease incidence was found significantly positively correlated with whitefly population. Minimum temperature, average temperature, afternoon relative humidity, average relative humidity and wind velocity found to be positively correlated with MYMV incidence . The multiple linear regression equation showed that different weather parameters were together responsible for the whitefly population to the extent of 90.38 per cent. Weather factor (Minimum temperature) was responsible for the disease incidence to the extent of 94.32 per cent . The potential yield losses due to the disease depend upon the stage of infection. An early infected plant suffers 74.50 per cent loss. The plot which was completely protected by the spraying of systemic insecticide yielded 32.59 per cent more yield than the field left unsprayed. | en_US |
| dc.identifier.citation | PATEL VINAY KUMAR DAHYABHAI_46439 | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810066103 | |
| dc.keywords | Plant Pathology | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 123 | en_US |
| dc.publisher | Plant Pathology Department, N. M. College of Agriculture Gujarat Agricultural University | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.subject | null | en_US |
| dc.theme | M.Sc. Thesis | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Epiphytology of mungbean Yellow Mosaic Virus (MYMV) in Mungbean (Vigna radiata (L.) Wilczek) Under South Gujarat Condition | en_US |
| dc.type | Thesis | en_US |