Integrated management of dry root rot [Rhizoctonia bataticola (Taub.) Butler] of chickpea

Abstract

In vivo screening of natural farming product like bheejamrutha and cotton cake individually and in combination with mancozeb tolerant fungal antagonist Trichoderma viride isolate 3 (Tv-3) and fungicide mancozeb were tested against Rhizoctonia bataticola in pot culture under green house conditions and field conditions. The results revealed that seed treatment with bheejamrutham (200 ml kg -1 ) + soil application of Tv-3 conidial suspension @1×10 8 CFU ml -1 fortified with 100 kg FYM @ 0.5% + soil application of cotton cake @ 200 kg ha -1 was found to be superior as it recorded the least disease incidence of 11.11 per cent and maximum shoot length, root length, highest vigour index, maximum fresh and dry weight. Integrated disease management of dry root rot of chickpea indicates that seed treatment with bheejamrutham (200 ml kg -1 ) + soil application of Tv-3 conidial suspension @ 1×10 8 CFU ml -1 fortified with 100 kg FYM @ 0.5% + soil application of cotton cake @ 200 kg ha -1 performed better in managing dry root rot of chickpea with a per cent disease reduction of 65.04 and recorded highest yield of 2263 kg ha -1 followed by seed treatment with mancozeb @ 2.5 g kg -1 + soil application of Tv-3 conidial suspension @ 1×10 8 CFU ml -1 fortified with 100 kg FYM @ 0.5%. + soil application of cotton cake @ 200 kg ha -1

Management Strategies for Charcoal Rot of Sesame: A Review

“…Tandel et al, tried phytoextracts of eleven plant species against M. phaseolina of green gram and revealed that the onion bulb extract produced maximum inhibition of mycelia growth of root rot fungus [40]. Kumar et al, studied the integrated management of Jatropha root rot caused by Rhizoctonia bataticola by using different phytoextracts and revealed that neem extract produced the maximum growth inhibition of the pathogen at 20% concentration by 55.6% [41]. Murugapriya et al, tested some botanicals against M. phaseolina and observed that growth was inhibited with extracts of Allium spp [42].…”

“…Jaiman and Jain tested the antagonistic activity of five bio-agents viz., Trichoderma viride, T. harzianum, Pseudomonas fluorescens, Bacillus subtilis and Gliocladium virens against the pathogen and observed that maximum inhibition (69.62%) was showed by T. viride followed by T. harzianum under in-vitro conditions [63]. Kumar et al, studied the integrated management of root rot disease of Jatropha caused by Rhizoctonia bataticola by using different biocontrol agents and revealed that mximum inhibition was produced by Trichoderma harzianum [41]. Sreedevi et al, evaluated the efficacy of five species of Trichoderma for biocontrol of Macrophomina causing root rot of groundnut under in vitro conditions by dual culture and bioassays methods and they revealed that among the five isolates T. harzianum (T3) and T. viride (T1) had maximum antifungal activity against the pathogen.…”

Plant extracts in agriculture and their applications in the treatment of seeds

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