SCREENING OF ORGANIC PREPARATIONS ON GROWTH AND VIABILITY OF THE SCLEROTIA OF VIABILITY OF THE SCLEROTIA OF VIABILITY OF THE SCLEROTIA OF Rhizoctonia solani Kuhn INVITRO AND IN SOIL

Abstract

The study was undertaken to screen the selected organic preparations under in vitro on mycelia growth and on
the viability of the sclerotia of Rhizoctonia solani Kuhn causing sheath blight in rice soil. Among the five viz., cow
urine, panchagavya, modified panchagavya, jeevamrutham and beejamrutham tested against sclerotial viability
panchagavya and beejamrutham were found to be effective in inhibiting sclerotial germination even at lower
incubation period of 6 h. While jeevamrutham and modified panchagavya inhibited sclerotial germination at
higher incubation periods i. e., 18 h and 24 h. Panchagavya and jeevamrutham are found to be effective in
inhibiting sclerotial germination in soil. Maximum mycelial growth inhibition by 100 percent was recorded with
jeevamrutham and beejamrutham.