EPIDEMIOLOGY AND MANAGEMENT OF FUSARIUM HEAD BLIGHT OF WHEAT

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dc.contributor.advisorRana, S. K.
dc.contributor.authorKAUR, GURPREET
dc.date.accessioned2022-08-11T05:36:15Z
dc.date.available2022-08-11T05:36:15Z
dc.date.issued2022-06-30
dc.description.abstractThe investigation entitled “Epidemiology and management of Fusarium head blight of wheat” was conducted at the Department of Plant Pathology, CSK HPKV, Palampur and Research farm of Rice and Wheat Research Centre (RWRC), Malan during 2019-21. The average disease incidence and severity of FHB at different locations of Himachal Pradesh varied from 3.25 to 7.74 and 15.08 to 25.29 per cent during 2019-20 and 2020-21, respectively. Three Fusarium species viz., Fusarium graminearum, F. compactum and F. avenaceum were found associated with the disease but F. graminearum was more prevalent in all the surveyed locations of Himachal Pradesh. The temperature of 25°C and pH of 5.0 were found to be optimum for mycelial growth, sporulation and perithecia formation of the fungus. The seed and crop residue of maize, wheat and rice served as the primary source of inoculum for the disease development. All the weather parameters viz., temperature, relative humidity and rainfall contributed for the disease development as all of them individually and collectively showed positive correlations with disease severity. Out of 200 tested genotypes of wheat, 13 were found free from disease, 26 as resistant and 54 as moderately resistant to FHB under artificial inoculations. Under in vitro conditions, beejamrit, extracts of Acorus calamus (aqueous and alcoholic), Trichoderma harzianum (TH-5) and carbendazim 50 WP gave highest inhibition of F. graminearum. In a pot experiment, seed treatment and two foliar sprays of carbendazim 50 WP gave maximum reduction (71.85 & 77.16%) in disease incidence and severity, respectively. However, among non-chemical management components beejamrit, aqueous extract of Acorus calamus and Trichoderma harzianum (TH-5) gave maximum reduction in disease incidence and severity. An integrated treatment viz., seed treatment with carbendazim 50 WP (0.2 %) followed by three foliar sprays each of jeevamrit (1 %), aqueous extract of Acorus calamus (1 %) and carbendazim 50 WP (0.1 %) at 10 days interval was found to be most effective giving 57.26 and 61.56 per cent reduction in disease incidence and severity, respectively.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810186209
dc.keywordsWheat, Treatment, Fusariumen_US
dc.language.isoEnglishen_US
dc.pages129en_US
dc.publisherpalampuren_US
dc.subPlant Pathologyen_US
dc.themeTo study the factors affecting pathogen and disease development, to evaluate wheat germplasm for identification of resistant sources, to evaluate integrated disease management components against Fusarium head blighten_US
dc.these.typePh.Den_US
dc.titleEPIDEMIOLOGY AND MANAGEMENT OF FUSARIUM HEAD BLIGHT OF WHEATen_US
dc.typeThesisen_US
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