Studies on seed borne aspects of anthracnose of chilli and its management
KrishiKosh
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Title |
Studies on seed borne aspects of anthracnose of chilli and its management
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Creator |
Vinaya.Hemannavar
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Contributor |
M.S.Laxminarayanaroa
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Subject |
Plant pathology
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Description |
The present investigation on studies on seed borne aspects of anthracnose of chilli and its management was conducted during 2006-08 which included testing of chilli seed samples for seed borne mycoflora, evaluation of seed health testing methods, seed to plant transmission studies, integrated management of anthracnose of chilli and management of seed mycoflora of chilli in storage. Seed health testing of chilli seed samples collected from different parts of northern Karnataka revealed the dominance of Colletotrichum capsici. Seed washing technique revealed only the presence of saprophytic fungi like Aspergillus sp. and Penicillium sp. Among he different seed health testing methods, standard blotter method was found to be good for detecting the seed-borne infection of C. capsici in chilli. Infected chilli seeds exhibited poor germination and reduced vigour. The pathogenic ability of seed borne C. capsici was proved in seedling symptom test and transmission study. Component plating technique revealed that C. capsici is present both on pericarp and in embryo. Seed dressing fungicide viz., carboxin + thiram (Vitavax Power), bioagent Pseudomonas fluorescens and botanical Azadirchta indica were found most effective in eliminating seed-borne infection of C. capsici and other fungal contaminants In the integrated seed treatment options, seed treatment with carboxin + thiram at 0.2 per cent concentration along with P. fluorescens at 0.6 per cent concentration followed by hexaconazole foliar spray of 0.1 per cent concentration at 30 days after transplanting recorded least per cent disease index with maximum yield and maximum benefit cost ratio. In storage, chilli fruits stored in 700 gauge polyethylene bag and in metallic container recorded least per cent seed infection. |
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Date |
2016-10-27T18:35:19Z
2016-10-27T18:35:19Z 2008 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/82616
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Format |
application/pdf
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Publisher |
UAS, Dharwad
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