INTEGRATED DISEASE MANAGEMENT OF URDBEAN ANTHRACNOSE CAUSED BY COLLETOTRICHUM TRUNCATUM

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dc.contributor.advisorBanyal, D.K.
dc.contributor.authorCHATAK, SHINEY
dc.date.accessioned2020-11-04T06:07:54Z
dc.date.available2020-11-04T06:07:54Z
dc.date.issued2020-08-24
dc.description.abstractThe investigation entitled “Integrated disease management of urdbean anthracnose caused by Colletotrichum truncatum” was conducted in the Department of Plant Pathology, CSKHPKV, Palampur during 2018-20 with aim to identify disease and pathogen, effect of weather variables on disease development and evaluation of IDM components viz; host resistance, organic and natural farming inputs, botanical, bioagents and chemicals under in vitro, in vivo and field conditions for the management of disease. The disease was identified as anthracnose based on symptoms and pathogen was identified as Colletotrichum truncatum on the basis of morpho-cultural characteristics that further confirmed through rDNA analysis of internal transcribed region using ITS1 and ITS4 primer. Disease severity was significantly positively correlated (as showed by partial correlation coefficient) with temperature and moisture under field conditions. Out of two hundred two diverse germplasm lines evaluated under field conditions for anthracnose resistance, only three lines (93-259, HBU1-2-4 & DKU-94) were found resistant and nine i.e. 341, DKU-411, PU-13-33, 26-332, 175-T94-2, DKU 99, 598, 557 and 1142 were moderately resistant. In vitro evaluation of organic and natural farming inputs viz; panchgavya, jeevamrit, beejamrit, tamarlassi and eupatorium ark against C. truncatum revealed that jeevamrit and beejamrit gave highest mycelial inhibition (100%) whereas, tamarlassi was least effective (22.80%). In vitro evaluation of alcoholic and crude extract of botanicals namely Melia azedarach, Eucalyptus sp., Eupatorium odoratum and Lantana camera showed that crude extract of eucalyptus provided highest mycelial inhibition of 88.79 per cent @ 30% whereas, at 30 % concentrations alcoholic extracts of all the tested botanicals provided complete mycelial inhibition. In vitro evaluation of bioagents viz; Trichoderma koningii (DMA-8), T. koningii (JMA-11), T. harzianum (SMA-5), T. harzianum (TH-11) and T. viride gave mycelial inhibition ranging from 4.83 to 33.24 per cent. Among five fungicides evaluated in vitro trifloxystrobin 25% + tebuconazole 50% at 50 ppm, carbendazim 50WP at 100 ppm, propiconazole 25EC at 250 ppm, tebuconazole 25EC at 250 ppm and mancozeb 75WP at 500 ppm showed complete mycelial inhibition of the pathogen. Under in vivo, panchgavya, eucalyptus, mancozeb 75WP, carbendazim 50WP and trifloxystrobin 25% + tebuconazole 50% provided 51.37, 43.72, 73.77, 90.16 and 90.71 per cent disease control over check among organic and natural farming inputs, botanicals, and fungicides respectively and were further selected for the development of integrated management model under field conditions. In integrated disease management, seed treatment with carbendazim 50WP followed by three sprays of trifloxystrobin 25% + tebuconazole 50% gave highest disease control of 85.44 per cent with 49.58 per cent increase in yield over check. However, among treatments involving integration of chemical with non-chemical as either seed treatment or foliar spray seed treatment with beejamrit followed by three foliar sprays of trifloxystrobin 25% + tebuconazole 50% and seed treatment with carbendazim 50WP followed by three foliar sprays of panchgavya also found effective with 81.64 and 46.20 per cent disease control along with 46.02 and 31.09 per cent yield increase, respectively over check.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810154324
dc.keywordsurdbean, disease, anthracnoseen_US
dc.language.isoEnglishen_US
dc.pages127en_US
dc.publisherCSKHPKV. Palampuren_US
dc.subPlant Pathologyen_US
dc.themecrop protectionen_US
dc.these.typeM.Scen_US
dc.titleINTEGRATED DISEASE MANAGEMENT OF URDBEAN ANTHRACNOSE CAUSED BY COLLETOTRICHUM TRUNCATUMen_US
dc.typeThesisen_US
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