USE OF ORGANIC AMENDMENTS ON THE EFFICACY OF BIOCONTROL AGENTS IN THE CONTROL OF ROOT ROT AND ROOT KNOT DISEASE COMPLEX OF OKRA

Abstract

Use of Verticillium chlamydosporium, Paecilomyces lilacinus, Rhizobium meliloti or soil amendment with Stoechospermum marginatum seaweed controlled the infection of Meloidogyne javanica root knot nematode and Macrophomina phaseolina, Rhizoctonia solani and Fusarium solani infection of okra. Neem cake and datura powder were also effective against M. javanica and M. phaseolina infection. The combined use of V. chlamydosporium and neem cake completely controlled the M. javanica infection. The greatest height and fresh weight of shoot were produced when R. meliloti was used with seaweed followed by V. chlamydosporium used with neem cake.