Effect of Liquid Organic Manures on Larval and Cocoon Traits of Silkworm (Bombyx mori L.)
S. Chandrashekhar, S. U. Hemavathi, M. Arun Kumar
International Journal of Plant & Soil Science · pp. 276–282 · Published 23 Dec 2022
10.9734/ijpss/2022/v34i242639Abstract
The Study was carried out at Department of Sericulture, UAS, GKVK, Bengaluru under irrigated condition during the 2020-21 to study the effect of soil application liquid organic manures in mulberry and its effect on larval and cocoon traits of silkworm, V-1 mulberry variety planted at 90+150 × 60 cm spacing. Three different liquid organic manures were tested against recommended dose of fertilizer (control), leaf quality was assessed via feeding to silkworm. Significantly increased fifth instar larval weight (27.66 and 41.15 g/10 larvae, respectively) was recorded in both cross breed (PM x CSR2) and double hybrid (FC1 x FC2) silkworms fed with mulberry leaves produced from soil application of bio digested liquid organic manure equivalent to 150 % N ha-1 (T9). Double hybrid (FC1 x FC2) silkworm fed with treatment (T9) showed significantly higher cocoon weight (24.76 g/10 cocoons), shell weight (5.89 g/10 shells), cocoon shell ratio (23.78 %), single cocoon filament length (1138.80 m) and filament denier (3.65).
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