Evaluation of promising castor genotype in terms of agronomical and yield attributing traits, biochemical properties and rearing performance of eri silkworm, Samia ricini (Donovan)

► Two genotypes of castor i.e. accession no Ac03 and Ac04 were selected as superior in terms of seed and leaf biomass yield. ► Shell weight, shell ratio and effective rate of rearing i.e. ERR of eri silkworm were better when feed on the leaves of the accession no Ac03 and Ac04. ► A significant negative relationship had observed between larval weight and leaf nitrogen content and positive relationship with crude protein and sugar content. ► Accession no Ac03 and Ac04 were found to be better in terms of agronomical and yield attributing traits together with rearing performance.