Plant extracts play an important role in management of pest and diseases in crops. Various plants available are used for treating various fungal diseases in crops. Screening of promising plant extract is vital to develop sustainable management options for pests and diseases.Keeping this in view, it was thought pertinent to have phytochemical screening of medicinal plant extracts to justify the putative use of the plants in the remedy of diseases in crops.The functional groups of medicinal plant leaf extracts have been analysed by the Fourier Transform Infrared Spectroscopy technique to recognize and identify the various kinds of functional groups that exist in mixtures and it has been found that all the tested plant extracts have various flavonoids, tannins and glycosides which contribute to anti-fungal properties.