Management of banded leaf and sheath blight caused by Rhizoctonia solani f.sp. sasakii of maize
| dc.contributor.advisor | Ashwani Kumar | |
| dc.contributor.author | Yadav, Lokesh | |
| dc.date.accessioned | 2019-11-20T05:06:26Z | |
| dc.date.available | 2019-11-20T05:06:26Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | The present study entitled “Management of banded leaf and sheath blight caused by Rhizoctonia solani f.sp. sasakii of maize” was conducted during Kharif season of 2018 at CCSHAU, Regional Research Station Uchani, Karnal. All the laboratory work was carried out in the Department of Plant Pathology, College of Agriculture, Chaudhary Charan Singh Haryana Agricultural University, Hisar. The experiments were laid out in RBD in field and CRD in lab conditions. Maize (Zea mays L.) is the most important cereal crops in the world agricultural economy with high yield potential. The disease banded leaf and sheath blight of maize caused by Rhizoctonia solani f.sp. sasakii is considered as the main limiting factor for reduced production. The characteristic symptoms of disease appears on leaves and sheaths on 40-45 days old plants. Symptoms on leaf sheath were water-soaked, round in shape and straw-coloured whereas, on leaves irregular, water soaked, round to stretched lesions having diameter 1-3 mm were observed. In case of severe infection, the pathogen manifests itself on the cobs and results in no grain formation. It was observed that the growth of pathogen was white to creamy whitish on PDA after 24 hours of inoculation. The sclerotia were round, semi spherical to irregular in shape and were scattered in the Petri plates. To evaluate the efficacy of three different aqueous compost extracts were used under in vitro conditions for the per cent mycelial growth inhibition. It was found that the compost extracts of cow desi inhibited mycelial growth up to 22.22 per cent at 20 per cent concentration. It was revealed that seed treatment with carbendazim @ 2g/kg of seed was found most effective in controlling disease upto 54.25 per cent. Seed treatment with Trichoderma harzianum @ 0.2% and soil application with P. fluorescens @ 0.2% was most effective in controlling the disease upto 66.89 per cent and highest yield (57.68 q/ha) was also recorded from this treatment. Out of five fungicides evaluated, foliar sprays of azoxystrobin (0.1%) twice at 30 and 45 DAS was found most effective in reducing the disease upto 73.54 per cent and increasing grain yield upto 77.30 per cent. Out of twenty seven maize hybrids and sixty inbred lines of maize screened against banded leaf and sheath blight under field condition, only seven hybrids and two inbred lines showed resistant reaction against banded leaf and sheath blight disease of maize. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810135734 | |
| dc.keywords | Maize, Banded leaf and sheath blight, Rhizoctonia. solani f.sp. sasakii, Disease management, Compost extracts, Bio control, Chemicals and Host resistance | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | CCSHAU | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.subject | null | en_US |
| dc.theme | Management of banded leaf and sheath blight caused by Rhizoctonia solani f.sp. sasakii of maize | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Management of banded leaf and sheath blight caused by Rhizoctonia solani f.sp. sasakii of maize | en_US |
| dc.type | Thesis | en_US |