Fuente: WIPO "tomato" The disclosure relates to antimicrobial compositions comprising at least 80% water by weight, a copper component selected from copper (II) carbonate basic or sodium copper chlorophyllin, a zinc component selected from zinc oxide or zinc acetyl-acetonate, and at least one processing aid such as sulfamic acid, lactic acid, maleic acid, fumaric acid, 2-furoic acid, succinic acid, sulfosuccinic acid, 2,5-furandicarboxylic acid, glycolic acid, α-ketoglutaric acid, malic acid, acexamic acid, or gluconic acid. The copper-to-zinc molar ratio ranges from about 1:6 to about 6:1. The composition demonstrates enhanced antimicrobial activity against bacteria, fungi, and sclerotia, and is effective at lower copper concentrations than conventional agents. Principal uses include agricultural pathogen control via foliar spray or soil treatment. The composition provides broad-spectrum, persistent, and cost-effective antimicrobial action with improved environmental safety and resistance management.