EFFECT OF ORGANIC FERTILIZERS ON QUANTITATIVE AND QUALITATIVE PARAMETERS OF SILK COCOON PRODUCTION
P. Sujathamma1*, G. Savithri1, N. Vijaya Kumari1, V. Asha Krishna1, T.Vijaya1, K.V.S.S. Sairam2 and N. Sreerama Reddy3
|Corresponding Author: P. Sujathamma, E-mail: [email protected]|
|Received: 07 February 2014 Accepted: 28 February 2014|
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Mulberry silkworm Bombyx mori L. is monophagous and feeds on mulberry. The beneficial effects of various organics such as green manures, bio-fertilizers, vermicompost and application of certified organic fertilizers need to be highlighted adequately for increasing the yields in mulberry and consequent silk quality. Due to continuous application of chemical fertilizers which brings about the depletion of the soil fertility, sustainable yields of cocoons could not be achieved. As an alternative, application of organic manures which helps in the revival of soil health has to be tested for a sustainable increase of yield and quality of mulberry leaf in comparison with application of Chemical fertilizers. In this study six treatments comprising of organic nitrogen, organic phosphorous, organic potassium were applied and the bio-efficacy of all these inputs on the quantitative and qualitative parameters of silkworm and cocoon were studied in comparison with chemical fertilizers. Bioassay studies revealed that T-6 and T-4 have shown higher values compared to control.