Volume No. 7 Issue No.: 1 Page No.: 66-69 July-September, 2012

 

IN-VITRO EFFECT OF DDT AND DIMETHOATE ON GROWTH OF NONSYMBIOTIC BACTERIA
(Azotobacter chroococcum)

 

Vasundriya Ranjana, Malhotra Manjit1, Siddiqui S. A.2 and Pathrade Mamata3

1. Department of Zoology, Govt. Holkar Science college, Indore, Madhya Pradesh Indore, (INDIA)
2. Biotechnology Research Centre, M.P. State Oil seed Federation, Dhar, Madhya Pradesh, (INDIA)
3. Department of Zoology, M.J.B. Government Girls’ P.G. College, Indore, Madhya Pradesh., (INDIA)

 

Received on : June 05,2012

 

ABSTRACT

 

Pesticides are applied to the crop fields to get rid of pests and insects, which affects crop plants by destroying them. However, these chemicals sometimes affect the growth and survival of beneficial microorganisms in soil. An In-Vitro experiment was conducted with two pesticides viz. DDT (Dichloro-diphenyl-trichloro ethane) and dimethoate at rates of 0.5 to 5.0 % respectively, to investigate their effects on growth and survival of non-symbiotic nitrogen fixing bacteria (Azotobacter chroococcum). Application of pesticides; stimulated the population of non-symbiotic Nitrogen fixing bacteria. Between the both pesticides, Dimethoate was more stimulative than DDT, which decreased population of A. chroococcum.

 

Keywords : Azotobacter chroococcum, Strain, DDT, Dimethoate, Microorganisms, MIC

 

 

BACK