Madras Agricultural Journal
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Biopotency of Promising Plant Extracts against Rice Sheath Rot Disease

Abstract

Partially purified protein fraction of leaf extracts of Convolvulus arvensis, Acalypha indica, Catharanthus roseus and Ocimum tenuiflorum at 100, 250 and 500 ppm effectively inhibited the mycelial growth, sporulation, spore germination and germ tube elongation of Sarocladium oryzae. Non-protein fractions were less effective. In pot culture experiment, spraying of leaf extract of C. arvensis protein fraction at 500 ppm recorded the maximum disease reduction which was on par with protein fractions (500 ppm) of A. indica, O. tenuiflorum and C. roseus

Keywords: Rice sheathrot, botanicals, protein fractions, non-protein fractions.

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