Larval Traits of Pure Mysore (PM) and CSR2 Seed Cocoons as Influenced by Nutritional Management of Mulberry Through Integration of Organic and Inorganic Fertilizers

摘要

The effect of integrated mulberry nutrition on S36 and M5 mulberry and its influence on larval and cocoon parameters of PM and CSR2were studied. The results revealed that, among the various treatments, larvae of PM and CSR2 fed on mulberry leaves raised through the application of biofertilizer @ 10 kg/ha each of Azospirillum brasilense + Aspergillus awamori + 20% recommended nitrogen each through compost, vermicompost, green manure, castor oil cakeand remaining 20% N through inorganic fertilizer with recommended dose of P and K through inorganic fertilizers exhibited significantly higher grownup larval weight (1.824 and 3.911 g), effective rate of rearing (96.81 and 96.38%) and cocoon yield (43.59and 70.29 kg /100 DFLs) with significantly minimum disease incidence (2.89 and 3.32%), chawki duration (246.38 and 232.75 h), fifth instar larval duration (173.73 and 165.90 h), total moulting duration (100.65 and 105.67 h) and total larval duration (651.79 and 615.75 h) in PM and CSR2 breeds, respectively. Though the grownup larval volume was non-significant, it was highest in PM (7.34 ml / 5 worms) and CSR2 (12.47 ml / 5 worms) when they were reared on mulberry leaves from the same treatment.