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Parthenium hysterophorus L., an obnoxious weed has been reported as a main source of nuisance and health hazard to mankind and animals, threat to biodiversity and danger to environment. Ever since the Parthenium weed became a menace, efforts are being made to manage the weed by different methods such as manual, chemical and biological control methods but so far no single method has been proved satisfactory as each method suffers from one or more limitations such as high cost, impracticability, non - target and residual toxicity etc. Increasing global concern about the indiscriminate use and...