Abstract: 1-Phenyl-1,6-dihydropyridaz-6-on-3-yl-(thiono)-phosphoric(phosphonic) acid esters of the formula ##STR1## in which R is alkyl,R.sup.1 is alkyl or alkoxy,R.sup.2 is halogenoalkyl, andX and Y each independently is oxygen or sulphur,Which possess arthropodicidal properties.

Abstract: O-alkyl-O-[1,6-dihydro-1-substituted-6-oxo-pyrimidin-4-yl]-(thiono) (thiol) phosphoric (phosphonic) acid esters and ester-amides of the formula ##STR1## in which R represents alkyl,R.sup.1 represents alkyl, alkoxy, alkylthio, monoalkylamino or phenyl,R.sup.2 represents hydrogen, alkyl, alkoxy, alkylthio or dialkylamino,R.sup.3 represents alkyl or alkenyl,R.sup.4 represents hydrogen, alkyl or halogen, andX represents oxygen or sulphur,Which possess insecticidal, acaricidal and nematicidal properties.

Abstract: O-Alkyl-O-[2-substituted-6-alkoxy-pyrimidin-(4)yl]-thionophosphonic acid esters of the formula ##STR1## in which R and R.sup.3 each independently is alkyl,R.sup.1 is phenyl or alkyl, andR.sup.2 is alkyl, alkoxy, alkylthio or dialkylaminoWhich possess arthropodicidal properties.

Abstract: N-Methyl-N-(sulphonic acid amide-N'-sulphenyl)-carbamic acid esters of the formula ##STR1## in which R.sup.1 is dialkylamino with 1 to 4 carbon atoms in each alkyl radical, phenyl or phenyl carrying at least one halogen, alkyl with 1 to 4 carbon atoms, nitro or trihalogenomethyl substituent,R.sup.2 is alkyl with 2 to 8 carbon atoms, cycloalkyl, phenyl or cycloalkyl or phenyl carrying at least one halogen, alkyl with 1 to 4 carbon atoms, nitro or trifluoromethyl substituent, andR.sup.3 is phenyl, naphthyl, benzodioxolanyl, dihydrobenzofuranyl or indanyl; phenyl, naphthyl, benzodioxolanyl, dihydrobenzofuranyl or indanyl substituted at least once by trihalogenomethyl, halogen, nitro, cyano, cycloalkyl, formamidino, dioxanyl or dioxolanyl, or by alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto, alkynylmercapto or dialkylamino, each with up to 4 carbon atoms per aliphatic moiety, or an oxime radical of the formula ##STR2## R.sup.4 and R.sup.

Abstract: N,N-dimethyl-O-[3-tert.-butylpyrazol-5-yl]-carbamic acid esters of the formula ##STR1## in which R represents hydrogen, alkyl or cyanoalkyl andR.sup.1 represents hydrogen, halogen or alkyl which possess arthropodicidal and nematicidal properties.

Abstract: O-Alkyl-O-[6-substituted pyridazin(3)yl]-thiono) (thiol)alkanephosphonic acid esters of the formula ##STR1## in which X and Y each independently is oxygen or sulfur,R.sub.1 is alkyl with 1 to 6 carbon atoms,R.sub.2 is alkyl with 1 to 4 carbon atoms,R.sub.3 is alkoxy with 1 to 4 carbon atoms, alkynyloxy with 2 to 5 carbon atoms, alkylsulfonyloxy with 1 to 3 carbon atoms, monoalkylcarbamoyloxy with 1 to 3 carbon atoms, halogen, benzyloxy, benzoyloxy, phenoxy, or phenoxy carrying at least one substituent selected from halogen, nitro, cyano, --SO.sub.2 CH.sub.3, --SO.sub.2 CH.sub.2 Cl, and alkyl, halogenalkyl or alkylthio, each with up to 3 carbon atoms, andR.sub.4 is hydrogen or alkyl with 1 to 3 carbon atoms, which possess insecticidal , acaricidal, nematicidal and fungicidal properties.

Abstract: O-alkyl-O-[6-substituted-thio-pyridazin-3-yl]-(thiono) (thiol)-phosphoric (phosphonic) acid esters of the formula ##STR1## in which R represents alkyl,R.sup.1 represents alkyl, alkylthio or alkylamino,R.sup.2 represents alkyl, alkenyl, alkynyl or phenyl which can optionally be monosubstituted or polysubstituted, andX represents oxygen or sulphur.Which possess insecticidal and acaricidal properties.

Abstract: O-Alkyl-O-[pyrimidin(5)yl]-(thiono)(thiol)-phosphoric (phosphonic) acid ester or ester-amide of the formula ##STR1## in which R is alkyl,R.sup.1 is alkyl, alkoxy, alkylthio, monoalkylamino or phenyl,R.sup.2 is hydrogen, alkyl or phenyl,R.sup.3 is hydrogen or alkyl, andX is oxygen or sulphur, which possess arthropodicidal and nematicidal properties.

Abstract: O-Alkyl-6-chloro-benzisoxazol-(3)-yl-thionophosphoric (phosphonic) acid esters of the formula ##STR1## in which R is alkyl with 1 to 4 carbon atoms andR.sup.1 is alkyl with 1 to 3 carbon atoms or alkoxy with 1 to 4 carbon atoms,Which possess insecticidal, acaricidal, nematicidal and fungicidal properties.

Abstract: O-Alkyl-O-[1,6-dihydro-1-substituted-6-thioxopyridazin(3)yl]-(thiono) (thiol) phosphoric (phosphonic) acid esters and ester-amides of the formula ##STR1## in which R is alkyl with 1 to 6 carbon atoms,R' is alkyl, alkoxy, alkylmercapto or alkylamino with 1 to 6 carbon atoms per alkyl chain, or phenyl,R" is alkyl, cyanoalkyl, carbalkoxyalkyl or alkylcarbonylalkyl with 1 to 4 carbon atoms per alkyl chain, phenyl or phenyl carrying at least one substituent selected from the group consisting of halogen, nitro, alkyl with 1 to 4 carbon atoms and halogenoalkyl with 1 to 4 carbon atoms, andX is oxygen or sulfur,Which possess arthropodicidal properties.

Abstract: In a pesticidal preparation having a depot gas action, and comprising a phosphate ester in admixture with a solid carrier, the improvement wherein said phosphate ester comprises dimethyl-2,2-dichlorovinyl thiophosphate.

Abstract: 3-Alkoxymethyl- and -alkylthiomethyl-pyrazol(5)yl(thiono)(thiol)-phosphoric(phosphonic) acid esters and ester-amides of the formula ##STR1## in which R is hydrogen, alkyl, cyanoalkyl or phenyl,R.sup.1 is hydrogen or halogen,R.sup.2 is alkoxy or alkylthio,R.sup.3 is alkyl, alkoxy, monoalkylamino or phenyl,R.sup.4 is alkyl, andX and Y each independently is oxygen or sulphur, which possess arthropodicidal properties.

Abstract: Novel O-methyl-O-n-propyl-O-(2-carbalkoxy-2-alkoxy-vinyl)-thionophosphoric acid esters of the formula ##STR1## in which R and R.sup.1, which may be identical or different, each represent alkyl,Which possess arthropodicidal properties.

Abstract: Oxime-carbamates of fluorinated ketones of the formula ##STR1## in which X represents hydrogen or fluorine,R represents alkyl, cycloalkyl, phenyl or phenylalkyl, any of which can optionally be substituted,R.sup.1 and R.sup.2, which may be identical or different, each represent hydrogen, alkyl, alkenyl, alkynyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl or optionally substituted phenyl, andR.sup.2 can also represent the --SR.sup.3 grouping,R.sup.3 represents alkyl, halogenoalkyl, optionally substituted phenyl or alkoxycarbonyl, or represents a radical identical to that to which the --SR.sup.3 grouping is bonded, or represents the ##STR2## grouping, WHEREINR.sup.4 represents alkyl andR.sup.5 represents alkyl, dialkylamino or optionally substituted phenyl,And acid addition salts thereof, which possess insecticidal, acaricidal, nematicidal and fungicidal properties.

Abstract: Sulfonic acid-N'-methylamido-N'-sulfenyl-N-methyl-carbamic acid esters of the formula ##STR1## in which R.sup.1 is dialkylamino with 1-4 carbon atoms in each alkyl group, phenyl substituted in the o- or m-position by halogen or by alkyl with 1-4 carbon atoms, or phenyl substituted in the o-, m- or p-position by NO.sub.2, CF.sub.3 or CN, andR.sup.2 is phenyl, naphthyl, benzodioxolanyl or indanyl; phenyl, naphthyl, benzodioxolanyl or indanyl substituted by trihalogenomethyl, halogen, nitro, cyano, formamidino, dioxanyl or dioxolanyl, or by alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto or dialkylamino wherein each hydrocarbon portion has 1-4 carbon atoms; cycloalkyl of 5-7 carbon atoms, or ##STR2## in which R.sup.3 and R.sup.4 each independently is cyano or alkyl, alkoxy, alkylthio or alkoxycarbonyl with 1-4 carbon atoms in each alkyl group, or R.sup.3 and R.sup.4 together form a ring, or, provided that R.sup.1 is a NO.sub.2 -substituted phenyl, R.sup.

Abstract: O-Alkyl-O-[4-alkylpyrimidin(2)yl]-(thiono)-(thiol) phosphoric (phosphonic) acid esters of the formula ##STR1## in which R is alkyl with 1 to 9 carbon atoms,R.sub.1 is alkyl, alkoxy or alkylmercapto each with 1 to 6 carbon atoms, or phenyl,R.sub.2 is alkyl with 1 to 6 carbon atoms,R.sub.3 is hydrogen or halogen,R.sub.4 is halogen, thiocyanato or alkoxy, alkylmercapto or alkoxycarbonyl with 1 to 4 carbon atoms in each radical, andX is oxygen or sulfur, which possess insecticidal, acaricidal and nematocidal properties.

Abstract: O,O-Di-alkyl-O-(1-6-pyridazinon-3-yl)-(thiono)-phosphoric acid esters of the formula ##STR1## in which R is methyl or ethyl,R.sub.1 is alkyl with 3 to 5 carbon atoms or alkoxyalkyl with 1 to 3 carbon atoms in each alkoxy and alkyl moiety,R.sub.2 is hydrogen, nitro, halogen or alkyl with 1 to 6 carbon atoms, andX is oxygen or sulfur,Which possess insecticidal and acaricidal properties.

Abstract: O,O'-Dialkyl-O,O'-[2-aminopyrimidin(4,6)diyl]-bis-[(thiono)(thiol)phosphori c(phosphonic) acid esters] of the formula ##STR1## in which R is alkyl,R.sup.1 is alkyl, alkoxy or alkylthio,R.sup.2 and R.sup.3 each independently is alkyl or conjointly with the nitrogen atom form a heterocyclic ring which is optionally interrupted by at least one hetero-atom,R.sup.4 is hydrogen, alkyl or halogen, andX is oxygen or sulphur,Which possess arthropodicidal properties.

Abstract: Indan-5-yl-N-methylcarbamic acid esters of the formula ##STR1## in which R represents hydrogen or C.sub.1 -C.sub.4 alkyl,R.sup.1 represents hydrogen or C.sub.1 -C.sub.4 alkyl,R.sup.2 represents C.sub.1 -C.sub.4 alkyl,R.sup.3 represents hydrogen or C.sub.1 -C.sub.4 alkyl andR.sup.4 represents hydrogen, chlorine, bromine, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy,Which possess arthropodicidal and fungicidal properties.

Abstract: Disubstituted-O-[1-fluoro-2-halogeno-ethyl]-phosphoric (phosphonic) acid esters of the formula ##STR1## in which R.sub.1 is alkyl with 1 to 4 carbon atoms optionally substituted by fluorine, chlorine or bromine,R.sub.2 is alkyl or alkoxy each with 1 to 4 carbon atoms and optionally substituted by fluorine, chlorine or bromine, or phenyl optionally substituted by at least one of nitro and halogen,X is chlorine or bromine, andY is hydrogen or fluorine,Which possess insecticidal, acaricidal and nematicidal properties.