The present invention relates to esters of carboxylic acid agrochemicals comprising a labile protecting group and having formula (I). Certain of the esters of carboxylic acid agrochemicals do not undergo hydrolysis to a significant degree in the dark, but are cleaved to regenerate the parent carboxylic acid agrochemical when exposed to light. Others of the esters of carboxylic acid agrochemicals undergo hydrolysis under both light and dark conditions. The present invention further relates to methods for the controlled release of a carboxylic acid agrochemicals, and to methods of controlling unwanted plants comprising applying to the unwanted plants an ester of a carboxylic acid agrochemical.

The invention relates to the field of pesticide technology, and in particular a type of carboxylic acid derivative-substituted iminoaryl compound, preparation method, herbicidal composition and use thereof. The compound, as shown in general formula I:

##STR00001## wherein, Q represents

##STR00002##

Y represents halogen, haloalkyl or cyano; Z represents halogen; M represents CH or N; W represents OX.sub.5, SX.sub.5 or N(X.sub.5).sub.2; X represents —CX.sub.1X.sub.2-(alkyl).sub.n-, -alkyl-CX.sub.1X.sub.2-(alkyl).sub.n- or —(CH.sub.2).sub.r—; X.sub.3 and X.sub.4 each independently represent O, S, NH or N-alkyl, etc. The compound has excellent herbicidal activity against gramineous weeds, broadleaf weeds, cyperaceae weeds and so on even at low application rates, and has high selectivity for crops.

The invention relates to the field of pesticide technology, and in particular a type of carboxylic acid derivative-substituted iminoaryl compound, preparation method, herbicidal composition and use thereof. The compound, as shown in general formula I:

##STR00001## wherein, Q represents

##STR00002##

Y represents halogen, haloalkyl or cyano; Z represents halogen; M represents CH or N; W represents OX.sub.5, SX.sub.5 or N(X.sub.5).sub.2; X represents —CX.sub.1X.sub.2-(alkyl).sub.n-, -alkyl-CX.sub.1X.sub.2-(alkyl).sub.n- or —(CH.sub.2).sub.r—; X.sub.3 and X.sub.4 each independently represent O, S, NH or N-alkyl, etc. The compound has excellent herbicidal activity against gramineous weeds, broadleaf weeds, cyperaceae weeds and so on even at low application rates, and has high selectivity for crops.

A compound represented by formula (I) or formula (II) has a pest control effect. (In the formulae, Q.sup.1 represents a pyrazine ring or the like; G.sup.1 represents a nitrogen atom or a carbon atom; X.sup.1 represents an alkyl group or the like; m represents the number of X.sup.1 moieties; A represents an oxygen atom or the like; Y represents a single bond or the like; Q.sup.2 represents a benzene ring or the like; X.sup.2 represents an alkyl group, an aryl group or the like; X.sup.3 represents a halogeno group or the like; n represents the number of X.sup.3 moieties; Z.sup.q- represents a counter ion; and q represents 1 or 2.)

##STR00001##

A compound represented by formula (I) or formula (II) has a pest control effect. (In the formulae, Q.sup.1 represents a pyrazine ring or the like; G.sup.1 represents a nitrogen atom or a carbon atom; X.sup.1 represents an alkyl group or the like; m represents the number of X.sup.1 moieties; A represents an oxygen atom or the like; Y represents a single bond or the like; Q.sup.2 represents a benzene ring or the like; X.sup.2 represents an alkyl group, an aryl group or the like; X.sup.3 represents a halogeno group or the like; n represents the number of X.sup.3 moieties; Z.sup.q- represents a counter ion; and q represents 1 or 2.)

##STR00001##

The invention belongs to the technical field of agricultural chemicals, and in particular relates to a pyridazinol compound represented by the Formula I, a derivative, preparation method, herbicidal composition and use thereof. The compound, derivative and herbicidal composition thereof have very high herbicidal activity and selectivity, and are safe for crops,

##STR00001##

The invention belongs to the technical field of agricultural chemicals, and in particular relates to a pyridazinol compound represented by the Formula I, a derivative, preparation method, herbicidal composition and use thereof. The compound, derivative and herbicidal composition thereof have very high herbicidal activity and selectivity, and are safe for crops,

##STR00001##

Compounds of the formula (I) wherein the substituents are as defined in claim 1, useful as a pesticides, especially as herbicides. ##STR00001##

Compounds of the formula (I) wherein the substituents are as defined in claim 1, useful as a pesticides, especially as herbicides. ##STR00001##

Embodiments of the present invention relate to solvents for pesticides and pesticide formulations. In one aspect, a solvent for pesticides comprises (a) an ether ester of Formula 1: ##STR00001##
wherein R.sup.1 and R.sup.2 are each independently one of an alkyl group having 1 to 4 carbon atoms or an aryl group, wherein R.sup.3 is hydrogen, methyl, or ethyl, and wherein n is 1 to 6; and (b) a polar amide of Formula 2:
R.sup.4—C(O)—NR.sup.5R.sup.6  (Formula 2)
wherein R.sup.4 is an alkyl group having 1 to 4 carbon atoms, and wherein R.sup.5 and R.sup.6 are each independently an alkyl group having 1 to 3 carbon atoms.