Leaf blight disease of coconut 2 studies on curvularia sp

Abstract

The cultural behaviour of Curvularia lunata Wakkcr, which caused lesions in leaves of COcoll utseedlings, was studied on different agar media. Temperature - growth studies indicated that the colony growth and sporulation were best at 30° C. The optimum temperature for germination of conidia on Water Agar was 30° C. Germination was -redeced with the increase of concentration of conidia, and was lesson leaf surface than on water agar. When coconut leaves were inoculated with C. lunata, characteristic brown lesions appeared in three days. C. eragrostidis which was occasionally isolated from lesions, failed to produce any symptoms on inoculation.