Adeptness of bio-intensive approach against vascular bacterial wilt in Purulia district of West Bengal
Adeptness of bio-intensive approach against vascular bacterial wilt in Purulia district of West Bengal
P.P. Ghosh*, C. Ghosh, B. Mahato, A. Chakraborty, S.K. Bhattacharya and M.K. Bhattacharjya
ABSTRACT
Vascular bacterial wilt being an impediment of brinjal (Solanum melongena L.) production under the acidic soil condition of Purulia district of West Bengal resulted in 20-30% yield loss every year. The present participatory action research was aimed to study the (i) adeptness of integrated module of prophylactic soil disinfection and bio-control, (ii) only prophylactic soil disinfection, and (iii) only curative soil disinfection over uprooting and destruction of diseased plants (farmers’ practice). Results indicated all the management approaches under study performed significantly superior to farmers’ practice in terms of reduction in disease severity (32.8-43.6%), yield increase (20.9% - 26.8%) and benefit-cost ratio. Integrated approach was the best approach followed by prophylactic and curative soil disinfestations. Thus, for the present micro-level situation vascular bacterial wilt malady can be addressed by prophylactic application of lime at 500 kg/ha and bleaching powder 20 kg/ha in the soil four weeks before transplanting followed by seed dressing with 20g bioinoculant formulation per kg seed, pre-transplanting seedling root treatment with 20g bioinoculant formulation per litre and spot soil application of 7 days old mixture of bioinoculant formulation and well rotten cow-dung manure (1:40 w/w) or need based curative application of bleaching powder at 20 kg per ha through every irrigation.
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December 2015
Vol. 7, Iss. 1-2, Pages 1-18
