Comparative studies of Som (Persea bombycina) and Soalu (Litsea polyantha) and their possible combinations on commercial and seed crop rearing of muga silkworm (Antheraea assama Ww.)

The muga silkworm (Antheraea assama Ww.) is endemic to north-eastern region of India especially in Assam. Cooch Behar district and a few adjacent pockets in West Bengal are now proved their sound performance in seed as well as commercial crop in muga culture. An attempt has been made on two principal host plants viz., Som and Soalu to investigate their comparative performance on rearing as well as grainage in this area. Results indicated highest ERR when fed on som (44.67%), however, the cocoon yield, the ultimate output to the farmers showed highest yield when soalu used during early instar and som at late stages (26.74 kg). On an average better seed production parameters were observed in same combination like yield (Realized fecundity 233, hatching per cent 99.44). So, whether for silk or for seed soalu in early stage and som in late stage should be recommended for successful muga culture.