Abstract: The invention provides the use in combating fungi of compounds of general formula I wherein R1 is hydrogen, hydroxy, acyl, acyloxy, optionally substituted amino, Ra, Ra3Si, RaS or RaO, where Ra is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl, optionally substituted cycloalkenyl, optionally substituted aryl or optionally substituted heterocyclyl; Z is oxygen or sulfur; M is a thiophene ring; and R3 and R4, which may be the same or different, have the same meaning as Ra or can be optionally substituted amino, hydrogen, halogen, cyano, nitro or a group ORc or S(O)mRc, where Rc has the same meaning as Ra or is hydrogen or acyl and m is 0, 1 or 2; or R3 and R4 together with the atoms to which they are attached form an optionally substituted carbocyclic or heterocyclic ring; together with tautomers of compounds where R1 is hydrogen.

Abstract: The invention provides the use in combating fungi of compounds of general formula (I) wherein R1 is hydrogen, hydroxy, acyl, acyloxy, optionally substituted amino, Ra, Ra3Si, RaS or RaO, where Ra is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl, optionally substituted cycloalkenyl, optionally substituted aryl or optionally substituted heterocyclyl; R2 has the same meaning as Ra or can be hydrogen; Z is oxygen or sulfur, M is a thiophene ring, and R3 and R4, which may be the same or different, have the same meaning as Ra or can be optionally substituted amino, hydrogen, halogen, cyano, nitro or a group ORc or S(O)mRc, where Rc has the same meaning as Ra or is hydrogen or acyl and m is 0, 1 or 2; or R3 and R4 together with the atoms to which they are attached form an optionally substituted carbocyclic or heterocyclic ring; together with tautomers of compounds where R1 is hydrogen.

Abstract: Compounds of formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and each represents hydrogen, halogen, nitro, alkyl, substituted alkyl, alkoxy, carboxy or an ester, amide or mono- or di-substituted amide thereof, aryl, heterocyclic, aralkyl, cyano or hydroxy, with the proviso that R.sup.3 does not represent a second group of formula I or II in which R.sup.3 is merely a bond;R.sup.6 represents a group of formula COR.sup.8, COOR.sup.8, CONR.sup.8 R.sup.9 or SO.sub.2 R.sup.8, in which R.sup.8 represents alkyl, substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, aralkenyl, substituted aralkenyl, cycloalkyl or heterocyclic, and R.sup.9 represents hydrogen, alkyl, substituted alkyl, phenyl or substituted phenyl;R.sup.7 represents hydrogen, alkyl of 1 to 4 carbon atoms or a group as defined under R.sup.6 ; andX.sup.- represents one equivalent of an anion are acaricides, especially for use on crops.

Abstract: Compounds of formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same or different and each represents hydrogen, halogen, nitro, alkyl, substituted alkyl, alkoxy, carboxy or an ester, amide or mono- or di-substituted amide thereof, aryl, heterocyclic, aralkyl, cyano or hydroxy, with the proviso that R.sup.3 does not represent a second group of formula I or II in which R.sup.3 is merely a bond;R.sup.6 represents a group of formula COR.sup.8, COOR.sup.8, CONR.sup.8 R.sup.9 or SO.sub.2 R.sup.8, in which R.sup.8 represents alkyl, substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, aralkenyl, substituted aralkenyl, cycloalkyl or heterocyclic, and R.sup.9 represents hydrogen, alkyl, substituted alkyl, phenyl or substituted phenyl;R.sup.7 represents hydrogen, alkyl of 1 to 4 carbon atoms or a group as defined under R.sup.6 ; andX.sup.- represents one equivalent of an anion are acaricides, especially for use on crops.

Abstract: New nematocides and plant growth regulants comprise diazoles of formula, ##STR1## in which R.sup.1 is alkyl, substituted alkyl, aryl, or substituted aryl, R.sup.2 is alkyl, alkenyl, alkynyl or substituted alkyl and X is oxygen or sulphur. .Iadd.