Metalaxyl 8% + Mancozeb 64% WP is a benzenoid fungicide that acts systemically. Metalaxyl is a fungicide in the Phenylamide-Acylamine Group D of the Depsipeptide family. These are natural or synthetic compounds with residues of amino and hydroxy carboxylic acid. It disrupts the synthesis of nucleic acids. Mancozeb is a dithiocarbamate fungicide with effects on the nervous system via its main metabolite, carbon disulfide. It interferes with enzymes containing sulphydryl groups, which disrupts several biochemical processes within the fungal cell cytoplasm and mitochondria. It is a multisite protective fungicide that inhibits spore germination, remains on the leaf surface, and interferes with six different biochemical processes within the fungal pathogen cell. It contains both the systemic fungicide Metalaxyl and the contact fungicide Mancozeb, providing both internal and external protection. It is used in the nursery to control diseases such as downy mildew of grapes, damping off, and tobacco black shank. It is a systemic and extremely effective fungicide.