Abstract: An insecticidal and fungicidal composition capable of controlling crop diseases and insect pests at the same time by combining an insecticidal active ingredient and a fungicidal active ingredient is provided. The insecticidal and fungicidal composition is characterized by comprising as active ingredients a compound represented by the general formula (1) or (2) and a compound represented by the general formula (3) or (4). wherein, in the formula, A1, A2, A3, and A4 independently represent a carbon atom, a nitrogen atom or an oxidized nitrogen atom; G1 and G2 independently represent an oxygen atom or a sulfur atom; R1 and R2 independently a hydrogen atom or a C1-C4 alkyl group; Xs may be the same or different and represent a hydrogen atom, a halogen atom or a trifluoromethyl group; Q1 represents substituents such as a phenyl group, a heterocyclic group or the like; and Q2 represents substituents such as a phenyl group, a heterocyclic group or the like.

Abstract: An object of the present invention is to provide a composition for preventing harmful organisms exerting an excellent control effect against plant diseases and/or insecticidal effect.

Abstract: It is an object of the invention to provide a novel fungicide which exhibits a wide controlling spectrum against pathogens of various crops, and solves the toleration problem.

Abstract: It is an object of the present invention to provide a diamine derivative, a process for producing the same, and a plant disease control agent containing the above-described compound as an active ingredient. According to the present invention, a diamine derivative represented by Formula (1), a process for producing the same, and a plant disease control agent containing the above-described compound as an active ingredient are provided.

Abstract: A substituted anilide derivative represented by the formula (2): ##STR1## wherein A and B are methyl, and X is a hydrogen atom. The substituted anilide can be used to prepare a substituted carboxanilide derivative that exhibits a disease control effect against Botrytis cinerea, Powdery mildew, Pyricularia oryzae of rice plant and other various plant diseases, is excellent in residual effect, has activity against strains that are resistant to conventional chemicals, is safe for crops, and thus is useful as a plant disease control agent.

Abstract: A substituted carboxanilide derivative represented by the formula (1): ##STR1## wherein A is a hydrogen atom or methyl, B is a methyl or ethyl, and Het is 1-methyl-3-substituted-4-pyrazolyl or 2-methyl-4-substituted-5-triazoyl group, exhibits a disease control effect against Botrytis cinerea, Powdery mildew, Pyricularia oryzae of rice plant and other various plant diseases, is excellent in residual effect, has also activity against resistant strain for conventional chemicals, particularly exerts control effects against Botrytis cinerea at a lower dosage as compared with a prior art, is also safe for crops, and thus is useful as a plant control agent.

Abstract: A novel substituted thiophene derivatives represented by the formula (1) in the invention: ##STR1## wherein R is a straight or branched alkyl group having 3-12 carbon atoms, straight or branched halogenoalkyl group having 3-12 carbon atoms, straight or branched alkenyl group having 3-10 carbon atoms, straight or branched halogenoalkenyl group having 3-10 carbon atoms, or cycloalkyl group having 3-10 carbon atoms, the cycloalkyl group being unsubstituted or substituted with an alkyl group having 1-4 carbon atoms, R and --NHCOAr are adjacent to each other, and Ar is a heterocyclic group; have excellent control activity on various plant disease such as Gray mold, Powdery mildew, Blast and Rust, and are useful as a plant disease control agent due to outstanding residual effect on Botrytis cinerea and excellent effect on Gibberella zeae.

Abstract: The substituted thiophene derivative of the invention which is represented by the general formula (1) has a broad disease spectrum for a pathogenic fungus of various crops, exhibits an excellent controlling effect on disease such as gray mold, powdery mildew and rust in particular, and is also effective for a resistant fungus of conventional fungicides which has become a serious problem, and consequently is useful for an agricultural and horticultural fungicide.

Abstract: Application of a rice blast control agent containing an isothiazolecarboxylic acid derivative of the below-described formula, which shows excellent activity against rice blast (Pyricularia oryzae) in rice cultivation, to the water surface of a paddy rice field results in the absorption of the derivative through roots of rice plants, so that the resistance of the rice plants can be enhanced. ##STR1## wherein R.sup.1 and R.sup.2 independently mean a hydrogen or halogen atom or a particular group, and Y stands for an OR.sub.3 group (R.sup.3 being a hydrogen or alkali metal atom or a particular group), an NHR.sup.4 group (R.sup.4 being a hydrogen atom or a particular group), or a morpholino group.