Abstract: An antibiofilm composition is provided. The antibiofilm composition includes a polycarboxylic acid derivative or a salt thereof, onto which a hydrophobic group, a poly(ethylene oxide) group and/or a poly(propylene oxide) group is covalently bound, an essential oil, and a biosurfactant.

Abstract: Provided herein are compounds of general Formula I: or agriculturally acceptable salts thereof. The compounds of Formula I can be used to improve the health of plants. For example, the compounds of Formula I can be used to inhibit a microbial pathogen of a plant, or to increase resistance of a plant to one or more abiotic stress. Methods of manufacturing the compounds of general Formula I, as well as synthetic intermediates are also provided.

Abstract: A method for increasing resistance of a plant to one or more abiotic stress is provided. The method includes applying to the plant a combination including: a macrocyclic tetrapyrrole compound selected from the group consisting of a porphyrin, a reduced porphyrin and a mixture thereof; and an oil selected from the group consisting of a mineral oil, a vegetable oil and a mixture thereof. Another method for increasing resistance of a plant to one or more abiotic stress is provided. The method includes applying a macrocyclic tetrapyrrole compound selected from the group consisting of a porphyrin, a reduced porphyrin and a mixture thereof, to at least one of a seed and a seedling of the plant. Corresponding compositions are also provided.