RESCHEDULING OF BRUSHING DATE FOR COMMERCIALIZATION OF SILKWORM REARING (BOMBYX MORI L.) IN THE AUTUMN SEASON- A STUDY IN DOON VALLEY

Abstract

Sericulture is an essential economic activity in North Western India, particularly in Uttarakhand, contributing to rural livelihoods. However, the success of the autumn mulberry silkworm crop has been hampered by challenges such as temperature fluctuations, pest attacks, and the use of over-matured leaves. In the context of climate change and the need for sustainable sericulture, a two-year study was conducted in Doon Valley to investigate the effects of rescheduling pruning and brushing dates on the autumn silkworm crop. The experiment involved different pruning and brushing schedules, with observations made on parameters such as larval weight, defective cocoon percentage, cocoon productivity, single cocoon weight, single shell weight, and shell ratio. Statistical analyses were performed to assess the impact of these schedules on silkworm rearing. The results indicated that the timing of pruning and brushing significantly influenced various aspects of silkworm rearing. Notably, pruning mulberry trees in early July and brushing in September led to improved outcomes, including higher larval weight, lower defective cocoon percentage, increased cocoon productivity, and better cocoon quality. These findings align with previous studies highlighting the importance of using freshly pruned leaves for rearing. In conclusion, this research underscores the significance of proper scheduling of pruning and brushing dates to enhance the success of the autumn silkworm crop. By optimizing these practices, sericulturists can mitigate the adverse effects of temperature fluctuations and pests, thereby contributing to the sustainability of the sericulture industry in the region. This study also emphasizes the need for further research on season-specific mulberry and silkworm varieties to adapt to changing climatic conditions and ensure the long-term viability of sericulture in North Western India.