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Efficacy of bioagents, biofertilizers and soil amendments to manage root rot in greengram

Monali A. Deshmukh, R.M. Gade*, Y. K. Belkar and Mina D. Koche
Department of Plant Pathology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth., Akola-444104, India
gadermg@gmail.com

Page Range:
140-144
Article ID:
LR-3234
Online Published:
26-11-2015
Abstract
The potential of soil amendaments, bioagents and biofertilizers was evaluated for management of root rot caused by Macrophomina phaseolina (Rhizoctonia bataticola). Bioagents and biofertilizers i.e.Trichoderma harzianum, Pseudomonas fluorescens, Phosphate solubilizing bacteria and Rhizobium phaseoli exhibited significant inhibition of Rhizoctonia bataticola. Maximum inhibition was achieved by Trichoderma harzianum i.e. 80.5%. Compatibility amongst bioagents and biofertilizers were tested in vitro. Amongst them Trichoderma harzianum and Rhizobium phaseoli were found compatible to each other. In green house, seed treatment with the bioagents and biofertilizers and also application of soil amendments recorded good number of nodules. Application of FYM and seed treatment with R. phaseoli at 25 g/kg + P. fluorescens at 10 g/kg recorded maximum number of nodules (15.3). Different seed treatments with soil amendments were used for controlling root rot incidence. Among them (T6) FYM with seed treatment of T. harzianum 4 g/kg seed + PSB at 25 g/kg seed recorded the lowest root rot incidence (26.0%) followed by (T3) R. phaseoli at 25 g/kg seed + P. fluorescens at 10 g/kg seed which recorded 32.0% root rot incidence whereas, maximum incidence of the disease was recorded in the control (83.3%).
Keywords
Bioagents and Biofertilizers, Mungbean, Root rot, Soil amendments.
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