Author(s):

Nisha Verma, Dr. Ajay Kumar and Dr. Vivek Srivastava

Abstract: Basically in this work study of allelopathic effect of oil and liquid extract of any weed on microorganism like E. coli, Pseudomonas, B. subtillis, S. aureus, Parthenium hysterophorus plant were use for the isolation of liquid and oil extraction, cause parthenium have a wide variety of medicinal and adverse effect over microorganism. Basically P. hysterophorous show allelopathic effect over various crops and sometime increase production rate as well as reduce the growth. It was observed that the organic solvent increased the activity of liquid extract of the potent isolates by many times. we were seen comparative effect of antibiotics, oil, liquid, Ethanol and this study is a very helpful for herbal drug formulation and antibiotics as well as vaccine formulation.

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