The Influence of Vermiwash Sprayed Mulberry on Some Growth and Silk Parameters of Silkworm Bombyx Mori L.

Abstract

The influence of vermiwash on growth in terms of weights and sizes of larvae, feeding response in terms of ingestibility and digestibility, silk parameters including cocoon weights, silk yarn lengths and weights, NBFL and denier of silk yarn of the mulberry silkworm Bombyx mori L. belonging to two races - hybrid multivoltine KG race, and pure bivoltine CSR-2 have been studied. Though total ingestion and ingestibility percentage of the larvae was found to be the least in the single-feed group of KG race , denier, length and weight of silk yarn, NBFL, of the group showed higher values than the two-feed and control groups. Shortening of the larval period in KG race and influence on the cocoon shapes, sizes and consistency of cocoons of CSR 2 have also been observed.