Studies on Banded Leaf and Sheath Blight of Maize Caused by Rhizoctonia Solani f. sp. Sasakil Exner
| dc.contributor.advisor | S.I. Harlapur | |
| dc.contributor.author | Laxman Singh Rajput | |
| dc.date.accessioned | 2016-11-22T17:27:55Z | |
| dc.date.available | 2016-11-22T17:27:55Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | Banded leaf and sheath blight of maize caused by Rhizoctonia solani f.sp. sasakii Exner is an important disease which results in heavy yield loss. The investigations include main aspects viz., survey, variability of pathogen, in vitro evaluation of fungicides, bioagents, botanicals and management of the disease. The results of the investigations are summarized hereunder The roving survey on the disease severity revealed that, maximum disease severity was observed in Kalaghtagi (52.45%) followed by Mundgod (51.54%). Minimum severity was noticed in Bailhongal (15.72%). Highest disease severity observed in black soil under irrigated area on DKC 8101 hybrid in Kalaghtagi taluka of Dharwad district. Six isolates collected from different part of Northern Karnataka were studied for their variability. The isolates showed variability in morphological and cultural characters. Among six isolates, isolate Rsm6 (Kalaghatagi) was found to be fast growing, maximum sclerotial size (3.1mm), oval shape and red brown sclerotia, minimum time took for initiation of sclerotial production (8 days) and highest number of sclerotia per plate (115). The in vitro studies on fungicides evaluation at various concentration, indicated Propiconazole 25% EC and Carbendazim 50% WP were found most effective in inhibiting the growth of the fungus. The plant extracts viz., nimbicidine and NSKE at 5 and 10 per cent concentrations were effective against the pathogen. Among the biocontrol agents evaluated, Trichoderma harzianum found effective against the pathogen. Field studies on the management of the disease revealed that, seed treatment with Pseudomonas fluorescens @10 g kg-1 seed followed by two sprays of Propiconazole 25 EC @ 0.1% at 30 and 40 DAS found most effective treatment and resulted in lowest PDI (20.40%). This treatment increased grain yield (40.72%) and fodder yield (44.68%) over untreated check. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/87121 | |
| dc.publisher | UAS, Dharwad | en_US |
| dc.research.problem | Studies on Banded Leaf and Sheath Blight of Maize Caused by Rhizoctonia Solani f. sp. Sasakil Exner | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.theme | Studies on Banded Leaf and Sheath Blight of Maize Caused by Rhizoctonia Solani f. sp. Sasakil Exner | en_US |
| dc.these.type | M.Sc | |
| dc.title | Studies on Banded Leaf and Sheath Blight of Maize Caused by Rhizoctonia Solani f. sp. Sasakil Exner | en_US |
| dc.type | Thesis | en_US |