An application of a series of compounds in controlling or killing mites. It has been found by comparison that the compounds, when compared with a control group, can reduce the survival time of mites; in particular, taraxerol, diosmetin, and taraxasteryl acetate can significantly shorten the survival time of mites, and can be used for miticide and mite control products (such as drugs, cosmetic products, daily products and so on).

An application of Radix Gentianae Macrophyllae, a Radix Gentianae Macrophyllae extract, and a Radix Gentianae Macrophyllae monomer compound or a salt, an ester, an isomer, a solvate, and a derivative thereof in the preparation of an acaricidal product. The Radix Gentianae Macrophyllae monomer compound is selected from one or more of gentiopicrin, loganic acid, sweroside, roburic acid, scopoletin, rubimaillin, and swertiamarin.

Use of dandelion and monomer compounds thereof for preparing products for killing mites. Dandelion can reduce the survival time of mites. The dandelion monomers, especially taraxerol, diosmetin and taraxasterol acetate, can significantly shorten the survival time of demodex, and can be used for preparing products for killing and inhibiting mites.

Provided are methods and compositions for increasing plant resistance to abiotic stress. The composition may comprise a hydrogel and a priming agent. The methods may include contacting the seed with a seed coating composition comprising a hydrogel and a priming agent.

A Mesostigmata mite control composition comprising, as active ingredients: a specific quinoline derivative compound such as 8-fluoro-2,3-dimethyl-6-(1,1-dimethylethyl)-4-(methylcarbonyl)oxyquinoline; and at least one of other pest control agents exhibits an excellent control effect on Mesostigmata mites.

A Mesostigmata mite control composition comprising, as active ingredients: a specific quinoline derivative compound such as 8-fluoro-2,3-dimethyl-6-(1,1-dimethylethyl)-4-(methylcarbonyl)oxyquinoline; and at least one of other pest control agents exhibits an excellent control effect on Mesostigmata mites.

The present invention relates to compounds of formula (I) wherein A.sup.1, A.sup.2, A.sup.3, A.sup.4, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and n are as defined in claim 1; or a tautomer, isomer, enantiomer, salt or N-oxide thereof; to intermediates for preparing compounds of formula (I), to compositions comprising them and to methods of using them to combat and control insect, acarine, nematode and mollusc pests.

##STR00001##

The present invention relates to compounds of formula (I) wherein A.sup.1, A.sup.2, A.sup.3, A.sup.4, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and n are as defined in claim 1; or a tautomer, isomer, enantiomer, salt or N-oxide thereof; to intermediates for preparing compounds of formula (I), to compositions comprising them and to methods of using them to combat and control insect, acarine, nematode and mollusc pests.

##STR00001##

Provided are: a compound represented by Formula (I) or Formula (II) (wherein A represents an oxygen atom or a sulfur atom, X.sup.1 represents a substituted or unsubstituted C1-6 alkyl group or the like, m is any integer of 0 to 5, X.sup.2 represents a C2-8 haloalkyl group or the like, X.sup.3 represents a halogeno group or the like, n is any integer of 0-4, Z.sup.q− is a counter ion, and q is 1 or 2); and a pest control agent containing the compound as an active agent.

##STR00001##

The present invention is in the field of agricultural pathogen control. More specifically the invention relates to methods and compounds for controlling herbivorous arthropods, in particular insects and mites. The invention also provides for compositions comprising the same, methods of making the same, and methods of controlling plant disease.