In Vitro Antimicrobial Bio-efficacy Assessment of Different Organic Formulations against Root and Stem Rot Disease of Cucumber Incited by Fusarium oxysporum f.sp. radicis-cucumerinum
Suresh Kumar *
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur-313001, (Rajasthan), India.
N. L. Meena
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur-313001, (Rajasthan), India.
Pokhar Rawal
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur-313001, (Rajasthan), India.
Amit Trivedi
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur-313001, (Rajasthan), India.
Virendra Singh
Department of Horticulture, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur-313001, (Rajasthan), India.
N. L. Panwar
Department of Renewable Energy Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture & Technology, Udaipur-313001, (Rajasthan), India.
Karan Singh
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur-313001, (Rajasthan), India.
Hemant Gurjar
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur-313001, (Rajasthan), India.
*Author to whom correspondence should be addressed.
Abstract
In vitro evaluation of antimicrobial bio-efficacy of different four organic formulations viz., Neem oil (@ 0.5, 1.0, 1.5% con.), Azadirachtin (@ 0.10, 0.15, 0.20% con.), Bijamrut (@ 5, 10, 15% con.) and Jivamrut (@ 5, 10, 15% con.) were evaluated at different three concentrations against Fusarium oxysporum f.sp. radicis-cucumerinum causing root and stem rot disease of cucumber. Among the four different organic formulations, Azadirachtin was found most effective by showing minimum mycelial growth of 47.48, 31.63 and 21.70 mm and 47.25, 64.86 and 75.89% per cent growth inhibition at 0.10, 0.15 and 0.20% concentrations respectively. The Jivamrut depicted highest mycelial growth 63.88, 55.83, 43.95 mm with 29.03, 37.97 and 51.17% lowest per cent growth inhibition of the pathogen at 5, 10 and 15% concentrations, respectively.
Keywords: Organic formulations, neem oil, azadirachtin, bijamrut, jivamrut, Fusarium oxysporum f. sp. radicis-cucumerinum