Integrated Management of Chrysanthemum Wilt Caused by Fusarium oxysporum f. sp. chrysanthemi (Litt., Armst. and Armst.)
| dc.contributor.advisor | R. N. Bunker | |
| dc.contributor.author | Santosh Kumar | |
| dc.date.accessioned | 2024-07-20T06:46:15Z | |
| dc.date.available | 2024-07-20T06:46:15Z | |
| dc.date.issued | 2024 | |
| dc.description.abstract | The present study “Integrated management of chrysanthemum wilt caused by Fusarium oxysporum f. sp. chrysanthemi (Litt., Armst. and Armst.)” were taken on the various aspects viz., isolation, identification, pathogenicity test, in vitro and in vivo evaluation of fungicides, bio-agents and de-oiled cakes for management of chrysanthemum wilt and screening of different varieties of chrysanthemum against for source of resistance. The pathogen was isolated from root tissue of wilted chrysanthemum plant in the laboratory. Morphologically culture growth was fluffy with regular margin and colony was dull white to peach colour culture colony and the fungus produced micro conidia, macro conidia and chlamydospores. Micro-conidia were abundant, hyaline, continuous or single septate, ovoid to ovate in shape. Macro-conidia were sickle shaped, curved with 3-septate or rarely 4-5 septate. Chlamydospores were hyaline, usually vacuolated, spherical mostly found in chain. Based on cultural and morphological culture characteristics pathogen was identified as Fusarium oxysporum f. sp. chrysanthemi. The pathogenicity of Fusarium oxysporum f. sp. chrysanthemi was carried on susceptible variety “Pusa Anmol” with sick soil method. In early stage of disease plant produced symptoms of drooping, yellowing and loss of turgidity of leaves. At sever stage of disease, the stem and root portion showed internal brown to necrotic brown discoloration and blocking of vascular tissues. Ten varieties were screened under natural sick soil condition against fusarium wilt of chrysanthemum. Among them variety “Rose Pink” was found resistant with minimum 10.00 per cent wilt incidence and “Yellow Button” was found moderately resistant with 18.89% wilt incidence Seven fungicides were tested for their efficacy against Fusarium oxysporum f. sp. chrysanthemi at 250, 500, 750 and 1000 ppm concentration in laboratory. Tebuconazole 50% + trifloxystrobin 25% WG was found most effective with 90.56, 92.50, 100.00 and 100.00% inhibition of mycelial growth of fungus at 250, 500, 750 and 1000 ppm. Among the de-oiled cakes neem cake was found most effective with 37.50, 51.39, 64.17 and 81.94% mycelial growth inhibition at 5, 10, 15 and 20 per cent concentration while Trichoderma viride was superior compare to all other tested bioagents with 63.61% growth inhibition of pathogen. Eight different treatments were evaluated for integrated management of chrysanthemum wilt under pot culture. Treatment rooted cuttings treated with tebuconazole 50% +trifloxystrobin 25% WG @0.075% + soil drenching with tebuconazole 50% +trifloxystrobin 25% WG @0.075% after 15 day of transplanting was found most effective with maximum 100% wilt control | |
| dc.identifier.citation | Kumar S. and Bunker R. N. | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810212302 | |
| dc.language.iso | English | |
| dc.pages | 111 | |
| dc.publisher | MPUAT, Udaipur | |
| dc.research.problem | Integrated management of chrysanthemum wilt caused by Fusarium oxysporum f. sp. chrysanthemi (Litt., Armst. and Armst.) | |
| dc.sub | Plant Pathology | |
| dc.theme | Integrated management of chrysanthemum wilt caused by Fusarium oxysporum f. sp. chrysanthemi (Litt., Armst. and Armst.) | |
| dc.these.type | M.Sc | |
| dc.title | Integrated Management of Chrysanthemum Wilt Caused by Fusarium oxysporum f. sp. chrysanthemi (Litt., Armst. and Armst.) | |
| dc.type | Thesis |