Rashmi Nigam and L.S. Gautam*
Department of Plant Pathology, Janta Vedic College, Baraut, Baghpat
*Department of Zoology, Janta Vedic College, Baraut, Baghpat
Email: neelu.nigam@gmail.com
Received-17.09.2015, Revised-25.09.2015
Abstract: Antagonistic potential of fungal (Trichoderma harzianum, Trichoderma viride, Aspergillus niger & Penicillium oxalicum) and bacterial bioagents (Pseudomonas aeruginosa, Pseudomonas putida & Pseudomonas florescens) was studied against three pathogens i.e. Fusarium oxysporum, Rhizoctonia solani and Pythium ultimum at four different temperature (20oC, 25oC, 30oC and 35oC). Antagonistic potential of all fungal and bacterial bioagents was found to be significantly influenced by different temperature. With regards to effect of different temperature, among all fungal bioagents, Trichoderma harzianum resulted maximum percent inhibition of the pathogens followed by Trichoderma viride, Aspergillus niger and Penicillium oxalicum at 25oC to 30oC. While as bacterial bioagents, Pseudomonas fluorescens exhibited their higher antagonistic potential followed by Pseudomonas putida and Pseudomonas aeruginosa against all three pathogens at highest temperature i.e. 35oC.
Keywords: Biological control, Temperature, Fungal & Bacterial bioagents
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