Evaluation of Different Bioagents, Botanicals Extracts and Chemical Fungicides against Black Scurf of Potato caused by Rhizoctonia solani

Author: Ram Pal Verma*, Ved Ratan, Deepak Baboo, Mukul Kumar and Dushyant Kumar

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Abstract

Potato is commonly known as disease oriented problematic crop throughout the world. Diseases are one of the yield and quality reducing factors, which causes low yield of potato. Potato production is threatened by many factors in which diseases have maximum importance, which are caused due to Nematodes, Fungi, Bacteria, viruses etc. Black scurf reduce tuber quality, marketability and cause a serious disease of potato worldwide. In India responsible for 10-25% yield loss, yield losses may reached up to 50% in severely affecting potato crops. From the present studies results revealed that the minimum radial growth 29.2 mm and maximum growth inhibition 67.55 % of fungus was recorded in T1-(Trichoderma harzianum) followed by 34.2 mm and 62.00 % in T2-(Trichoderma viride) while, maximum radial growth 48.5 mm and minimum growth inhibition 46.11 % of fungus was recorded in T3- (Pseudomonas fluoescens) over control 90 mm at 6 DAI. Minimum radial growth 33.5 mm and maximum growth inhibition 62.

Keywords

Potato, black scurf, bioagents, botanicals, fungicides and Inhibition percent.