| 摘要 |
Described is an aqueous antimicrobial composition in colloidal from for application to a plant or a part thereof comprising an antimicrobially effective amount of a product formed by the reaction in water of a water soluble cupric tetra amine salt with an acid or a salt thereof selected from the group comprising hydroxy carboxylic acids, dicarboxylic acids, hydroxy di- and tri- carboxylic acids, polyhydric dicarboxylic acids, ketonic acids and mixtures and isomers thereof. The molar ratio of the water cupric tetra amine salt (as copper) to the acid or salt thereof (as carboxylate groups) can be from 4:1 to 1:4; and a pectin in an amount of 0.05 to 2.00% w/v and having a degree of esterification of 2-20 or derivatives or mixtures thereof; a wetting agent to promote the wetting of the plants or parts thereof by the composition; a spreading agent to promote the distribution of the composition onto the plant or parts thereof; and an adherent to promote the retention of the composition onto the plant or parts thereof. Also described is a method of protecting a plant or part of a plant from microbial infection which comprises the application of the described composition.
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