Impact of Seriboost-Treated Mulberry Leaves on Parental Silkworm Races in Two Different P1 Seed Zones

A field experiment was carried out at SSPC, Udhampur, during the spring season of 2025–2026 under two distinct seed zones to evaluate the effectiveness of Seriboost when sprayed on mulberry leaves 25 days after sprouting for seed crop rearing. The results revealed an average seed cocoon yield of 56.50 kg per 100 dfls in Seed Zone Thill and 56.41 kg per 100 dfls in Seed Zone Suntha. Moreover, the seed recovery per kilogram of seed cocoons surpassed the prescribed standards for both seed zones during the spring season. Based on these observations, the study suggests that mulberry gardens should be treated with Seriboost at a concentration of 2.5 mL per litre to improve leaf quality. The application of this foliar spray contributes to enhanced seed cocoon yield and overall productivity in both seed zones during the spring crop.