The present invention provides a composition having excellent control efficacy against plant diseases and a method for controlling plant diseases. A composition for controlling a plant disease comprising a compound represented by formula (I)

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[wherein each symbol represents the same definition as described in the present description] and one or more sterol biosynthetic enzyme inhibitor(s) selected from Group B has excellent control effects on plant diseases; Group B: a group consisting of prothioconazole and mefentrifluconazole.

The present invention provides a composition having an excellent control efficacy against plant diseases, and a method for controlling plant diseases using the same composition, and the composition comprises a compound represented by formula (I) [wherein each symbol represents the definition described in the specification], and one or more compounds selected from a mitochondrial electron transport chain complex III inhibitor, a mitochondrial electron transport chain complex II inhibitor, and a sterol biosynthesis inhibitor.

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The present invention provides a composition having an excellent control efficacy against plant diseases, and a method for controlling plant diseases using the same composition, and the composition comprises a compound represented by formula (I) [wherein each symbol represents the definition described in the specification], and one or more compounds selected from a mitochondrial electron transport chain complex III inhibitor, a mitochondrial electron transport chain complex II inhibitor, and a sterol biosynthesis inhibitor.

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The present invention provides a method for controlling a soybean rust fungus having an amino acid substitution of F129L on mitochondrial cytochrome b protein. According to the present invention, a compound represented by formula (I) [wherein: Q represents a group represented by Q1, a group represented by Q2, a group represented by Q3, or a group represented by Q4 (wherein “•” represents a binding site to a benzene ring); R.sup.1 represents a C1-C4 alkyl group which may be optionally substituted with one or more halogen atoms, etc.; E represents R.sup.2—CH═CH—, etc.; R.sup.2 represents a cyclopropyl group, etc.] can be used to control a soybean rust fungus having an amino acid substitution of F129L on mitochondrial cytochrome b protein.

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The present invention relates to a heat tolerance or drying tolerance improving agent, a salt tolerance improving agent, or an activity improving agent for plants, comprising acetic acid or a salt thereof, or a solvate thereof and malic acid or a salt thereof, or a solvate thereof.

The present invention relates to a heat tolerance or drying tolerance improving agent, a salt tolerance improving agent, or an activity improving agent for plants, comprising acetic acid or a salt thereof, or a solvate thereof and malic acid or a salt thereof, or a solvate thereof.

The present invention relates to a heat tolerance or drying tolerance improving agent, a salt tolerance improving agent, or an activity improving agent for plants, comprising acetic acid or a salt thereof, or a solvate thereof and malic acid or a salt thereof, or a solvate thereof.

Provided are powder of a pure disilver hydrogen citrate-containing composition in powder form, having excellent solubility, and a method for easily obtaining the disilver hydrogen citrate-containing composition with high efficiency. In addition, provided are an antibacterial agent or antiviral agent, containing the disilver hydrogen citrate-containing composition, and a method for producing the same.

The method for producing a disilver hydrogen citrate-containing composition of the present invention includes the following processes (1) to (3): (1) preparing a reaction mixture containing a silver compound and citric acid, the reaction mixture having a pH of 2.0 to 5.5; (2) precipitating the disilver hydrogen citrate-containing composition from the reaction mixture; and (3) collecting the precipitated disilver hydrogen citrate-containing composition.

Provided are powder of a pure disilver hydrogen citrate-containing composition in powder form, having excellent solubility, and a method for easily obtaining the disilver hydrogen citrate-containing composition with high efficiency. In addition, provided are an antibacterial agent or antiviral agent, containing the disilver hydrogen citrate-containing composition, and a method for producing the same.

The method for producing a disilver hydrogen citrate-containing composition of the present invention includes the following processes (1) to (3): (1) preparing a reaction mixture containing a silver compound and citric acid, the reaction mixture having a pH of 2.0 to 5.5; (2) precipitating the disilver hydrogen citrate-containing composition from the reaction mixture; and (3) collecting the precipitated disilver hydrogen citrate-containing composition.

Provided herein are compositions and methods to improve plant resistance to abiotic and biotic stress, thereby improving crop yield. Provided herein are compositions including zinc, copper, and an acid, where the acid is selected from citric acid, sulfuric acid, oxalic acid, humic acid, fulvic acid, boric acid, acetic acid, and a combination thereof. Certain embodiments optionally include ammonium sulfate. Compositions described herein have plant priming activity where the plant's defenses against abiotic and biotic stress are boosted.