*Krishi Vigyan Kendra (SKRAU), Sriganganagar-335 001
**Dry Land Farming Research Station, Arjia, Bhilwara, Rajasthan, India
Department of Plant Pathology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur-313 001
Online published on 23 July, 2012.
The efficacy of 17 plant extracts were evaluated in vitro by poisoned food technique against Pythium aphanidermatum. The mycelial growth of test pathogen was effectively inhibited by extracts of Azadirachta indica, Datura stramonium, Parthenium hysterophorus, Diospyros cordifolia, Argemone mexicana, Aloe barbandensis and Ricinus comunis at all concentrations. These extracts were also evaluated by growing tomato seedling in green house condition. Plants extract were found highly effective in reducing pre and post emergence mortality and also resulted in increase seedling vigour and dry matter production of tomato. Among plant extracts, A. indica and R. communis proved most superior as compared to others.
Plant extract, Pythium aphanidermatum, Solanum lycopersicum
