Abstract: There are described new benzoisothiazoles of general formula I ##STR1## wherein X and R have meanings given in the description, a process for their preparation and their use as pesticides, especially against nematodes.

Abstract: There are described new 5-substituted 3-arylisoxazole derivatives of general formula I ##STR1## in which in which R.sub.1 and R.sub.2 have the meanings given in the description, processes for their preparation and their use as pesticides, especially against nematodes.

Abstract: There are described new pyrimidine derivatives of the general formula I ##STR1## in which n is 0, 1 or 2;R.sub.1 is(a) the group --CXR.sub.5, where X is oxygen or sulphur and R.sub.5 is hydrogen, a nitrogen or sulphur containing heterocyclic group, which can contain other hetero atoms, optionally substituted alkenyl, acyl, alkoxycarbonyl, alkyl substituted by aryloxy, or optionally substituted mono- or dialkylamino; or R.sub.5 is the group --NHR.sub.6, where R.sub.6 is substituted amino, substituted carbamoyl, optionally substituted alkylsulphonyl, acyl or arylsulphonyl, and when n is 0 or when X is sulphur, R.sub.5 can also be alkyl, haloalkyl, aryl, aralkyl, alkoxycarbonylalkyl or arylamino;(b) cyano or the group --CXYR.sub.7, where X and Y are the same or different and are oxygen, sulphur or optionally substituted imino and R.sub.

Abstract: A composition is disclosed for the control of harmful organisms, containing at least one .alpha.-alkylthiocinnamic acid nitrile of the formula ##STR1## in which R is an if necessary, one or more times, the same or differently, substituted by halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio or trifluoromethyl, aromatic hydrocarbon and R.sub.1 is a straight-chain C.sub.1 -C.sub.4 -alkyl or cyanoethyl, as well as a process for the production of these compounds and a method for the control of said harmful organisms.

Abstract: The invention concerns new xylite derivatives, methods for the production of these compounds as well as compositions containing them having growth regulatory activity for plants.

Abstract: A method for production of novel antifungal 1,3,4-thiadiazole derivatives having a composition of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are independently alkyl with from 1 to 6 carbon atoms, alkenyl with from 2 to 6 carbon atoms, alkinyl with from 2 to 6 carbon atoms or cycloalkyl with from 3 to 6 carbon atoms is provided. 1,3,4-thiadiazole derivatives of a composition of the general formula ##STR2## are reacted with a compound having the composition of the general formula R.sub.1 -SH resulting in compounds of a composition having the formula ##STR3## which in turn are oxidized with an organic or inorganic oxidant.

Abstract: 1,3,4-thiadiazole-2-carboxylic acid derivatives of the formula ##STR1## wherein R is C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -alkinyl or C.sub.3 -C.sub.6 -cycloalkyl,R.sub.1 is C.sub.1 -C.sub.6 -alkoxycarbonyl, aminocarbonyl, C.sub.1 -C.sub.8 -alkylaminocarbonyl, C.sub.3 -C.sub.6 -cycloalkylaminocarbonyl, di-C.sub.1 -C.sub.8 alkylaminocarbonyl, cyclohexylmethylaminocarbonyl, alkoxyalkylaminocarbonyl, morpholinocarbonyl, pyrrolidinocarbonyl, piperidinocarbonyl or cyano,and n is 0.1 or 2.The compounds wherein n is 1 or 2 have both a high fungicidal and nematocidal activity. The compounds in which n is 0 are the starting products or intermediate products in making the compound in which a sulfonyl or sulfinyl group is present (n=1 or 2) but have also nematocidal properties of their own. All compounds of the invention avoid the undesirable environmental properties and other shortcomings of the prior art products, particularly those of the broadly used mercury compounds.

Abstract: 1,3,4-thiadiazole-2-carboxylic acid derivatives of the formula ##STR1## wherein R is C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -alkinyl or C.sub.3 -C.sub.6 -cycloalkyl,R.sub.1 is C.sub.1 -C.sub.6 -alkoxycarbonyl, aminocarbonyl, C.sub.1 -C.sub.8 -alkylaminocarbonyl, C.sub.3 -C.sub.6 -cycloalkylaminocarbonyl, di-C.sub.1 -C.sub.8 -alkylaminocarbonyl, cyclohexylmethylaminocarbonyl, alkoxyalkylaminocarbonyl, morpholinocarbonyl, pyrrolidinocarbonyl, piperidinocarbonyl or cyano,and n is 0.1 or 2.The compounds where n is 1 or 2 have both a high fungicidal and nematocidal activity. The compounds in which n is 0 are the starting products or intermediate products in making the compound in which a sulfonyl or sulfinyl group is present (n=1 or 2) but have also nematocidal properties of their own. All compounds of the invention avoid the undesirable environmental properties and other shortcomings of the prior art products, particularly those of the broadly used mercury compounds.

Abstract: 1,2,3-Triazole carboxylic acid amides, of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4 and n have the meaning defined in the specification in connection with formula I. The compounds have a broad biocidal, particularly herbicidal, insecticidal, acaricidal, fungicidal and nematocidal activity. They have a high degree of selectivity towards agriculturally valuable plants.

Abstract: The specification discloses esters of benzimidazole-1-carboximidic acids having antifungal properties and the use of these compounds for the protection of crops and plants from attack by fungi.