PJB-2009-47
PATHOGENESIS AND CONTROL OF MYROTHECIUM SPP., THE CAUSE OF LEAF SPOT ON BITTER GOURD (MOMORDICA CHARANTIA LINN.)
NASREEN SULTANA AND A. GHAFFAR
Abstract
Seed and soil inoculation by M. roridum and M. verrucaria reduced seed germination and caused seed rot, damping off, root rot and spots on aerial parts of bitter gourd. Isolates of M. roridum were found more pathogenic than isolates of M. verrucaria. This is the first report of seedling and root infection of M. roridum and M. verrucaria and also the first report of M. verrucaria leaf spot disease in bitter gourd. Isolates of M. roridum were found more pathogenic than isolates of M. verrucaria. Foliar sprays of fungicides and oil cakes extract significantly reduced the incidence and were found superior to other treatments in controlling disease. Maximum percent efficiency of disease control was observed where Topsin-M was sprayed on M. roridum (87.48%) and M. verrucaria (95.79%) inoculated leaves of bitter gourd.
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