IN VITRO EVALUATION OF ESSENTIAL OILS, BIO-CONTROL AGENTS AND FUNGICIDES AGAINST COLLETOTRICHUM

INVITRO EVALUATION OF ESSENTIAL OILS, BIO-CONTROL AGENTS AND FUNGICIDES AGAINST COLLETOTRICHUM GRAMINICOLA CAUSING ANTHRACNOSE OF SORGHUM (SORGHUM BICOLOR (L.) MOENCH)
Meenakshi Rana1, Yogendra Singh2 and Khajan Singh Bisht3
Department of Plant Pathology, Centre of Advanced Faculty Training in Plant Pathology,
College of Agriculture, G.B.Pant University of Agriculture and Technology, Pantnagar
[Corresponding author E-mail1: meenakshirn715@gmail.com]
Received: 30-05-2016 Revised: 12-07-2016 Accepted: 19-08-2016

Abstract:
Different essential oils, bio-control agents and fungicides were evaluated invitro against Colletotrichum graminicola. The extent of inhibition of the fungal growth was dependent on the concentration of the essential oil used. The minimum inhibitory concentration varied between 50-1000 ppm. All the five essential oils showed complete inhibition of mycelial growth at 1000ppm concentration. Amongst biocontrol agents, Trichoderma harzianum isolates were more effective and superior than Pseudomonas fluorescens isolates in dual culture, whereas among different fungicides Trifloxystrobin+penflufen, Quintal and Saaf were found to be highly effective against C. graminicola.

Keywords: invitro, bio-control agents, fungicides, essential oils, Colletotrichum graminicola

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