Provided is a plant disease control composition having a broad spectrum against various plant pathogens, and shows excellent controlling effects (synergistic controlling effects) which cannot be expected from a single component alone. The plant disease control composition comprises (Group a) at least one quinoline compound represented by the formula:

##STR00001##

(wherein R.sup.1, R.sup.2: an alkyl which may be substituted, an aryl which may be substituted, etc.; R.sup.3, R.sup.4: H, an alkyl which may be substituted, etc.; X: halogen, an alkyl which may be substituted, etc.; Y: halogen, alkyl, etc.; n: 0 to 4; m: 0 to 6) or a salt thereof, and at least one of fungicidal compounds selected from the group consisting of a Strobilurin series compound, a triazole series compound, etc., as effective ingredients.

Provided is a plant disease control composition having a broad spectrum against various plant pathogens, and shows excellent controlling effects (synergistic controlling effects) which cannot be expected from a single component alone. The plant disease control composition comprises (Group a) at least one quinoline compound represented by the formula:

##STR00001##

(wherein R.sup.1, R.sup.2: an alkyl which may be substituted, an aryl which may be substituted, etc.; R.sup.3, R.sup.4: H, an alkyl which may be substituted, etc.; X: halogen, an alkyl which may be substituted, etc.; Y: halogen, alkyl, etc.; n: 0 to 4; m: 0 to 6) or a salt thereof, and at least one of fungicidal compounds selected from the group consisting of a Strobilurin series compound, a triazole series compound, etc., as effective ingredients.

Provided is a plant disease control composition having a broad spectrum against various plant pathogens, and shows excellent controlling effects (synergistic controlling effects) which cannot be expected from a single component alone. The plant disease control composition comprises (Group a) at least one quinoline compound represented by the formula:

##STR00001##

(wherein R.sup.1, R.sup.2: an alkyl which may be substituted, an aryl which may be substituted, etc.; R.sup.3, R.sup.4: H, an alkyl which may be substituted, etc.; X: halogen, an alkyl which may be substituted, etc.; Y: halogen, alkyl, etc.; n: 0 to 4; m: 0 to 6) or a salt thereof, and at least one of fungicidal compounds selected from the group consisting of a Strobilurin series compound, a triazole series compound, etc., as effective ingredients.

Compounds of the formula (I) wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8 and X are as defined in claim 1. Furthermore, the present invention relates to agrochemical compositions which comprise compounds of formula (I), to preparation of these compositions, and to the use of the compounds or compositions in agriculture or horticulture for combating, preventing or controlling infestation of plants, harvested food crops, seeds or non-living materials by phytopathogenic microorganisms, in particular fungi.

##STR00001##

Compounds of the formula (I) wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8 and X are as defined in claim 1. Furthermore, the present invention relates to agrochemical compositions which comprise compounds of formula (I), to preparation of these compositions, and to the use of the compounds or compositions in agriculture or horticulture for combating, preventing or controlling infestation of plants, harvested food crops, seeds or non-living materials by phytopathogenic microorganisms, in particular fungi.

##STR00001##

The present invention addresses the problem of providing an agricultural/horticultural fungicidal composition with excellent fungicidal activity and without any concern about chemical damage to useful plants. The present invention provides an agricultural/horticultural fungicidal composition comprising component (I) and component (II) as active ingredients, wherein the component (I) is a compound of formula (I) and the component (II) is, for example, a microbicide other than the component (I).

##STR00001##

The present invention addresses the problem of providing an agricultural/horticultural fungicidal composition with excellent fungicidal activity and without any concern about chemical damage to useful plants. The present invention provides an agricultural/horticultural fungicidal composition comprising component (I) and component (II) as active ingredients, wherein the component (I) is a compound of formula (I) and the component (II) is, for example, a microbicide other than the component (I).

##STR00001##

The present invention provides a solution and related composition of matter and methods which synergistically improves a fungicide's effectiveness in resisting undesired fungal growth. The invention also provides wood and wood products which have been treated with the solution, method or compound. The solution may contain coformulants which do not alter the performance of the basic technology.

The present invention provides a solution and related composition of matter and methods which synergistically improves a fungicide's effectiveness in resisting undesired fungal growth. The invention also provides wood and wood products which have been treated with the solution, method or compound. The solution may contain coformulants which do not alter the performance of the basic technology.

An object of the present invention is to provide an agricultural and horticultural fungicidal composition that has excellent bactericidal activity and no possibility to cause phytotoxicity to useful plants. The present invention is an agricultural and horticultural fungicidal composition comprising a component (I) and a component (II) as active ingredients, wherein the component (I) is a compound of formula (I) or a salt thereof, and the component (II) is a fungicide, an insecticide/acaricide, or the like other than the component (I).

##STR00001##