Browsing by Author "Prathibha, V.H."
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Item Assessing status of pests and diseases with cluster approach - A case of coconut in Kasaragod district in northern Kerala(2017) Chandran, K.P.; Thamban, C.; Prathibha, V.H.; Prathibha, P.S.Item Differentiation of Phytophthora species associated with plantation crops using PCR and high-resolution melting curve analysis(2018) Prathibha, V.H.; Vinayaka Hegde; Sharadraj, K.M; Rajesh, M.K; Rachana, K.E.; Chowdappa, PItem Diseases(2017) Vinayaka Hegde; Prathibha, V.H.; Chowdappa, P.Item Enhancing farmer's income by growing disease-free coconut(2017) Vinayaka Hegde; Prathibha, V.H.; Chowdappa, P.Item Evaluation of locally available substrates for mass production of Trichoderma(2015-08) Prathibha, V.H.; Sharadraj, K.M.; Nidhina, K.; Vinayaka HegdeItem FIRST REPORT OF LASIODIPLODIA THEOBROMAE CAUSING APPLE AND IMMATURE NUT ROTS ON CASHEW IN INDIA(2017) Prathibha, V.H.; Vinayaka Hegde; Sharadraj, K.M; Chowdappa, P.Item Incidence and intensity of stem bleeding disease in northern Kerala - status and strategies for integrated management(2016) Thamban, C.; Prathibha, V.H.; Chandran, K.P.Item Integrated disease management in coconut(2013-07) Vinayaka Hegde; Prathibha, V.H.Item Integrated management of Ganoderma wilt/Thanjavur wilt- Need for farmer participatory intervention(2016-07) Thamban, C.; Prathibha, V.H.; Chandran, K.P.Item Integrated Pest Management in coconut based cropping systems(2024-10-01) Sujithra, M; Prathibha, V.H.; Jilu V. Sajan; Josephrajkumar, A.Item Management of Root-knot nematode Infestation in Coconut Cropping System(2021) Rajkumar; Surekha, R; Sujithra, M; Prathibha, V.H.Item MANAGEMENT STRATEGIES FOR GANODERMA WILT DISEASE OF COCONUT(2020) Prathibha, V.H.; Vinayaka Hegde; Monisha, M; Vipin, KItem MANAGEMENT STRATEGIES FOR GANODERMA WILT DISEASE OF COCONUT(2020) Prathibha, V.H.; Vinayaka Hegde; Vipin, KItem MANAGEMENT STRATEGIES FOR GANODERMA WILT DISEASE OF COCONUT(2020) Prathibha, V.H.; Vinayaka Hegde; Monisha, M; Vipin, KItem Multi-gene phylogeny and phenotypic analyses revealed an association of different Colletotrichum species with inflorescence dieback and leaf spot of arecanut in India(2024) Prathibha, V.H.; Rajesh, M.K; Akshay Dinesh; Balanagouda Patil; Daliyamol; Nagaraja, N.R.; Rajkumar; Sabana, A.A.; K.P. Gangaraj; K.P. Thejasri; Sunil S. Gangurde; Vinayaka HegdeArecanut is one of the economically important plantation crops. Among the various diseases, inflorescence dieback and leaf spot/blight diseases caused by Colletotrichum spp. have re-emerged as major factors impeding arecanut production in India in the last few years. To understand the Colletotrichum species complex in the arecanut system, we have characterized Colletotrichum spp. associated with inflorescence dieback and leaf spot/ blight of arecanut based on a combination of phenotypic, multi-locus (ITS, ACT, CHS-1, GAPDH, HIS3 and TUB2) phylogeny and pathogenicity studies. A total of 26 Colletotrichum isolates were obtained from arecanut inflorescence dieback (13 isolates) and leaf spot/blight (13 isolates) infected tissues collected from disease-endemic regions of Karnataka, Kerala and Tripura states of India. The combined multi-locus sequence analyses and a critical examination of phenotypic characters revealed the association of Colletotrichum aoteaora as a dominant species with arecanut inflorescence dieback disease. On the other hand, two Colletotrichum species, viz., C. siamense and C. fructicola, were distinctly associated with leaf spot/blight disease. All the Colletotrichum isolates studied were pathogenic to arecanut. Significant variations in lesion size were observed among the different species with cross-infection ability on inflorescence and leaves. This study represents the first comprehensive study of Colletotrichum spp. associated with arecanut inflorescence dieback and leaf spot/blight diseases. In addition, the study is the first record of C. aoteaora, C. siamense, and C. fructicola associated with the arecanut crop in this country. It provides valuable information for implementing effective IDM strategies against these diseases in India.Item National Symposium Sustainable Plant Health Management Amidst Covid Pandemic: Challenges and Strategies 1- 3 December 2021(2021) Rajesh, M.K.; Joseph Rajkumar, A.; Prathibha, V.H.; Daliyamol; Jilu V. Sajan; Merin Babu; Thava Prakasa PandianItem Yield loss due to fruit rot (Mahali) disease in arecanut in Kerala and Karnataka(2019) Jose, C.T.; Pandian, R.T.P; Naduthodi, N.; Prathibha, V.H.; Rajkumar; Shivaji Hausrao Thube; Chowdappa, P