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CONTROL OF COLLETOTRICHUM TRUNCATUM CAUSING ANTHRACNOSE / POD BLIGHT OF SOYBEAN BY AQUEOUS LEAF EXTRACTS AND BIOCONTROL AGENTS

DOI: 10.5958/j.0976-0571.37.3.050    | Article Id: LR-2821 | Page : 329-334
Citation :- CONTROL OF COLLETOTRICHUM TRUNCATUM CAUSING ANTHRACNOSE / POD BLIGHT OF SOYBEAN BY AQUEOUS LEAF EXTRACTS AND BIOCONTROL AGENTS .Legume Research.2014.(37):329-334
G.P. Jagtap, D.S. Gavate and Utpal Dey* utpaldey86@gmail.com
Address : Department of Plant Pathology, Marathwada Agricultural University, Parbhani-431401, India.

Abstract

A study was conducted during 2009 to 2010 to control Colletotrichum truncatum causing anthracnose / pod blight of soybean with plant extracts and bio-agents. All the nine aqueous leaf extracts and four species of antagonist Trichoderma evaluated in vitro were found effective against C.  truncatum and recorded significant inhibition of the test pathogen over untreated control. Of the aqueous leaf extracts evaluated, garlic recorded significantly highest growth inhibition (81.82%) of the test pathogen. The second and third best plant extracts found were tulsi (65.17 % inhibition) and onion (60.31% inhibition) both of which were on par. However, T. viride was found most effective and recorded 18.53 mm mean colony diameter and recorded significantly highest growth inhibition (79.40 %) of the test pathogen. This was followed by T. hamatum and Pseudomonas fluorescens with 73.74 and 69.31 per cent growth inhibition, respectively.

Keywords

Aqueous leaf extracts Bioagents Bioefficacy Colletotrichum truncatum
Glycine max
Inhibition.

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