Evaluation of yard long bean (Vinna unguiculata subsp. sesquipedalis) genotypes for collar rot and web blight

Forty four accessions of yard long bean were screened for resistance against collar rot and web blight caused by Rhizoctonia solani at College of Agriculture, Vellayani, Thiruvananthapuram. Evaluations were conducted in vivo and in vitro for disease reaction. Among 44 accessions screened under field conditions, fourteen accessions exhibited collar rot symptoms at seedling stage, the rest of the accessions were free from collar rot under field conditions.