Informatics Publishing Limited

R. Mohan Babu ¹, K. Seetharaman ¹, E. G. Ebenezar ¹, A. Sajeena ¹

Affiliations
1 Department of Plant Pathology, Agricultural College and Research Institute (TNAU), Madurai 625 104, Tamil Nadu, IN

Abstract

Studies were conducted in a greenhouse to assess the efficacy of Trichoderma viride Pers. Gray and neem cake in different problems soils viz., sandy, black hard pan, saline, sodic, alkaline, red crusted soil, acid soil and normal soil in suppressing the growth of blackgram ischolar_main rot pathogen Macrophomina phaseolina (Tassi.) Goid. The biocontrol efficacy of T. viride I₃, plus neem cake application in uninfested soil was the maximum 60 days after inoculation in acid soil which showed the minimum (5.63%) ischolar_main rot incidence as compared to T. viride I₃, alone (6.44%) and neem cake application alone (7.15%). In infested soil, the T. viride I₃ and neem cake plus pathogen inoculation recorded the minimum (6.47%) disease incidence in acid soil as compared to T. viride I₃, and pathogen inoculation (7.52%), and neem cake application plus pathogen inoculation (8.72%), In uninocuiated control and in inoculated control of acid soil, the ischolar_main rot incidence was 7.84 and 9.70 percent, respectively.

Keywords

Bioconrol, Macrophomina phaseolina, Neem Cake, Problem Soils, Trichoderma viride.

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