A field experiment was conducted during 2014-16 at Regional Sericultural Research Station farm and two farmers‟ field in Kalimpong hills, West Bengal, India with five treatments and four replications to study the integrated effect of treated pressmud and FYM on growth attribute characters, yield and quality of existing BC259 (Morus alba L.) mulberry variety. This experiment was also extended to check its adverse effect on bioassay of SK6 SK7 (Bombyx mori L.) silkworm. | Integrated effect of treated pressmud and FYM on mulberry leaves and bioassay of silkworm in acid soils of Kalimpong Hills India