Metalaxyl belongs to Group D Phenylamide – Acylamine fungicide. It disrupts nucleic acids synthesis. Metalaxyl is a systemic, benzenoid fungicide. Mancozeb is a dithiocarbamate fungicide and affects the nervous system through their main metabolite, carbon disulfide. It is a multisite protective fungicide and inhibits spore germination and remains on the leaf surface and interfers with six different biochemical processes within the fungal pathogen cell. It contains a systemic fungicide metalaxyl and a contact fungicide mancozeb and ensures double protection from inside and from outside. It is used for the control of downy mildew of grapes, damping off and black shank diseases in tobacco in the nursery. It is a highly active and systemic fungicide.