| 主权项 |
1. A bioactive agrichemical concentrate comprising a) at least one carboxylic acid selected from citric acid, valeric acid, itaconic acid, acetic, citriconic acid, lactic acid, malic acid, succinic acid, aldaric acid, proprionic acid, malonic acid, maleic acid, salicylic acid, glutaric acid, tartaric acids, and benzoic acid, b) at least one antimicrobial metal ion or ion source wherein the antimicrobial metal ions or the antimicrobial metal ions of the ion source are selected from the group consisting of silver, a combination of silver and zinc, a combination of silver and copper and a combination of silver, copper and zinc, and c) optionally, at least one surfactant; wherein the acid is present at a level of at least 40 weight percent and in a molar excess relative to the metal ions of at least 2 times; said concentrate being free of other bioactive agrichemical actives in an amount which manifests efficacious or synergistic activity or manifests synergy with the metal/acid antifungal active of said concentrate when said concentrate is in a diluted form said diluted form comprising i) the acid is from 0.01 to 20 weight percent; ii) the amount of antimicrobial metal ion is 500 ppm or less in the case of a single metal ion or 1000 ppm or less in the case or multiple metal ions, iii) the concentration of the surfactant, if present, is 0.001 to about 3 weight percent, and iv) the pH of the dilute solution when diluted in purified water is at least 2 and less than 6; said concentrate in said diluted form being synergistically effective for killing, controlling and/or inhibiting the growth of fungi on plants when applied to the soil in which a seed, crop or plant is or is to be planted; to the aqueous environment in which plants are growing; or to plants in their growing environment. |
