Research Journal of Science and Technology

Keshav Singh ¹, Harendra Kumar Chauhan ¹

Affiliations
1 Department of Zoology, D. D. U. Gorakhpur University, Gorakhpur-273009 U.P., IN

Abstract

The exotic species Eisenia fetida have been known to useful in management of different organic wastes and for production of organic fertilizer. The result deals with the period of initiation of development of clitellum and formation of first cocoon; and number of hatchlings emerged out of cocoons of Eisenia fetida in tertiary combinations of buffalo dung (BD) combined with different agro-wastes (Rb=rice bran, Ws=wheat straw, Bb=barley bran, Gb=gram bran, Bp=banana peel). The tertiary combination of BD+Bp+Gb important for development of clitellum in Eisenia fetida. In tertiary combinations of buffalo dung with different agro-wastes, development of clitellum was significantly faster and specific combination of BD+Ws+Bb showed significant period of initiation of cocoon. There was no significance difference in period of cocoon formation and incubation period of cocoon. Significantly high number of cocoon productions was observed in combination of BD+Ws+Rb (26.00±1.71 cocoon/worm). The higher number of hatchlings were observed per worm produced in BD+Ws+Rb (47.58 hatchling/worm) and sowed maximum growth rate (7.29±0.03 mg /worm/day) of Eisenia fetida was observed in combination of BD+Ws+Gb. The combination of buffalo dung with Ws and Gb is a best feed materials combination for better growth and development of Eisenia fetida.

Keywords

Agro-Wastes, Buffalo Dung, Eisenia fetida, Growth and Reproduction, Vermicomposting.

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Keshav Singh ¹, Deepak Kumar Bhartiya ², Harendra Kumar Chauhan ², Rahul Rai ², Ram Nayan Singh ³

Affiliations
1 Vermiculture Research Laboratory, Department of Zoology, D.D.U. Gorakhpur University, Gorakhpur, 273009, UP, IN
2 Department of Zoology, D.D.U. Gorakhpur University, Gorakhpur-273009, UP, IN
3 Department of Zoology, K. N. I. P. S. S., Sultanpur-228118, UP, IN

Abstract

The aim of the present study was to investigate the heavy metals accumulated by earthworm Eisenia fetida from sewage sludge (SS) with different animal's dung during vermicomposting. The cobalt (Co) and lead (Pb) were significantly decrease in vermicompost from all the combination of SS; maximum decreased Co (84.83%), and Pb (83.69%) from the SS as combination of BD+SS (in ratio 1:1) and HD+SS (in ratio 1:3) respectively. The Co and Pb was significantly increase (4.34% and 7.14%) in earthworm body (10.127±0.003 and 14.319±0.005 mg/kg) when treated in the combination of PD control and BD+SS in 1:3 ratio respectively. The Pb was also observed in the earthworm body after treatment of SS with different combination of animal dung. The Co and Pb conc. were observed in earthworm body before inoculation at the level of (9.687±0.003 mg/kg) and 13.296±0.011 mg/kg respectively. These metals concentration were decreased in vermicompost resulted from as significantly increase in earthworm body as zooaccumulation during vermicomposting. The earthworm Eisenia fetida also important macro-organism was responsible for the reduction of heavy metals due to the accumulation in their body tissue.

Keywords

Bioaccumulation, Eisenia fetida, Sewage Sludge, Heavy Metals and Vermicomposting.

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