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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Mar 2009, 29 (2)                                     Back


Ovarian development in Labeo dyocheilus (McClelland) during active

Soil mycofloral responses following the exposure to 2, 4-D

Namita Joshi and Deep Gupta*

Department of Environmental Science, Kanya Gurukul Mahavidyalaya,

Gulukul Kangri University, Haridwar-249 407, India

(Received: February 04, 2006 ; Revised received: October 26, 2006 ; Re-revised received: November 27, 2006 ; Accepted: December 03, 2006)

Abstract: 2, 4-Dichlorophenoxyacetic acid (2,4-D) is a post emergence herbicide. The tests were conducted to study the toxicity of  2,4-D using EC50 value in four dilutions.  2,4-D was applied at concentration of 25, 50, 75, 100, 200 and 300 mg l-1 in the potato Dextrose agar medium. The effect of this herbicide was evaluated as the colony forming unit (CFU). EC50 value for 10­-3 dilution of soil was 138±5.944 mg l-1. Soil physico-chemical parameters and mycofloral properties were also evaluated. Qualitatively 10 genera of fungi were observed in untreated soil, whereas 4 genera were found in 2, 4-D administered dose.

Key words: 2, 4-D, EC50, Mycofloral responses, Soil properties

PDF of full length paper is available with author (deepguptanir@yahoo.com)

 

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