Parthenium hysterophorus leaf extracts were tested in vitro for fungitoxic activity against Phytopthora capsici isolated from Solanum melongena eggplant and Capsicum annuum in various solvents such as acetone, ethanol, methanol, and aqueous. Fungitoxicity was assessed using the food poisoning technique, which involved utilising various extracts at 200mg/ml and recording their activity as radial growth and percentage inhibition. Ethanol and acetone extracts were the only ones to completely stop the fungus from growing. Methanol inhibited the fungus by 50%, whereas the aqueous extract had no effect. The results of this study show that ethanol and acetone extracts of Parthenium hysterophorus can be utilised as a biofungicide to suppress pathogenic fungus

Keywords : Biofungicide, Phytopthora capsici, Parthenium hysterophorus, Extract, Fungus