Integrated management of fusarium wilt of vegetable cowpea (Vigna unguiculata sub sp. Sesquipedalis (L.) Verdcourt)
| dc.contributor.advisor | Girija, V K | |
| dc.contributor.author | Senthil Kumar, E | |
| dc.contributor.author | KAU | |
| dc.date.accessioned | 2019-05-31T07:14:31Z | |
| dc.date.available | 2019-05-31T07:14:31Z | |
| dc.date.issued | 2003 | |
| dc.description | PG | en_US |
| dc.description.abstract | The study "Integrated disease management of Fusarium wilt of cowpea (Vigna unguiculata sub sp. sesquipedalis (L.) Verdcourt)" was conducted at the Department of Plant Pathology, College of Agriculture, Vellayani, Kerala Agricultural University during 2001-2003. Three species of Fusarium were found associated with cowpea wilt in Thiruvananthapuram district. They were identified as Fpallidoroseum, Foxysporum, Fisolani. Of these, Fpallidoroseum was the most virulent pathogen. Two fungal antagonists viz., Trichoderma viride (A7) and T. virens (A1S) isolated from cowpea rhizosphere were highly effective in inhibiting F pallidoroseum under in vitro conditions. Two fluorescent pseudomonads, P, and P9 showed significant suppression of the pathogen. Pot culture experiments using biocontrol agents revealed that T. viride was most effective in reducing the disease and in enhancing the plant biomass and nodulation. Among the fungicides tested, mancozeb (0.3 %) and carbendazim (0.1 %) showed significant inhibition of the pathogen under in vitro conditions and suppression of wilt disease under in vivo conditions. There was also enhancement of plant growth and nodulation of cowpea. However, carbendazim caused suppression of Trichoderma. So, mancozeb was selected as the fungicidal component for development of integrated disease management package. Neemcake supported the growth of the antagonistic fungus, T. viride and inhibited the mycelial growth of the pathogen, F pallidoroseum. The soil application of neemcake significantly decreased the disease and increased plant growth. Combination of seed treatments and soil application of T. viride, soil application of neemcake (150 kg/ha) and soil drenching with mancozeb (0.3 %) effectively suppressed Fusarium wilt of cowpea. It also appreciably increased the biomass and pod yield of the crop. | en_US |
| dc.identifier.citation | 172185 | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810106036 | |
| dc.keywords | Plant pathology, vegetable cowpea, fusarium-idenitfication, fungicide treated plants, cowpea-nodulation | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Department of Plant Pathology, College of Agriculture, Vellayani | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.subject | null | en_US |
| dc.theme | Fusarium wilt of vegetable cowpea | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Integrated management of fusarium wilt of vegetable cowpea (Vigna unguiculata sub sp. Sesquipedalis (L.) Verdcourt) | en_US |
| dc.type | Thesis | en_US |