Abstract: Phosphates of the formula ##STR1## where R.sup.1 is alkyl of not more than 3 carbon atoms, R.sup.2 is alkoxy, alkylthio or alkylamino each of which has a straight-chain or branched alkyl substituent of not more than 5 carbon atoms, Y.sup.1 and Y.sup.2 independently of one another are each hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen, and X is O or S, a process for their manufacture, and their use as insecticides and acaricides.

Abstract: Thiophosphates of the formula I ##STR1## where R.sup.1 is hydrogen, or not more than 4 identical or different substituents R.sup.1 may be present, each of which is fluorine, chlorine or bromine, straight-chain or branched alkyl of not more than 5 carbon atoms, alkoxy of not more than 3 carbon atoms or alkylthio of not more than 3 carbon atoms, R.sup.2 is alkoxy, alkylthio or alkylamino, each of which is substituted by straight-chain or branched alkyl of not more than 5 carbon atoms, R.sup.3 is alkyl of not more than 3 carbon atoms and X is oxygen or sulfur, a process for their preparation and their use as pesticides.

Abstract: Heterocyclic phosphoric acid derivatives of the formula ##STR1## where R, R.sup.1, R.sup.2, R.sup.3, X and Y have the meanings given in the disclosure. The compounds are suitable for combating pests from the class of insects, Acarina and nematodes.

Abstract: Aroylureas of the formula ##STR1## where A denotes a phenyl, thienyl or pyridyl-3 radical which is mono- or polysubstituted by halogen, linear or branched alkyl of 1 to 4 carbon atoms, or linear or branched alkoxy of 1 to 4 carbon atoms, R denotes linear or branched alkyl of 1 to 4 carbon atoms or linear or branched alkoxy of 1 to 4 carbon atoms, and n denotes one of the integers 0,1 and 2, which have an insecticidal and acarididal action, and a process for combating insects and mites with these active ingredients.

Abstract: New thienylmethyl-thiophosphoric acid esters of the formula ##STR1## where R.sup.1 denotes methyl or ethyl, R.sup.2 denotes linear or branched alkyl of a maximum of 5 carbon atoms, X denotes oxygen or sulfur, Y denotes sulfur or --NH--, Z denotes halogen, and n denotes one of the integers 0, 1, 2 and 3, which are effective against pests, especially insects, Arachnida and Nemathelminthes, and pesticides containing these compounds as active ingredients.

Abstract: New pyridazinonyl-(di)(thio)-phosphoric (phosphonic) acid esters of the formula ##STR1## where X and Y each denote oxygen or sulfur, R.sup.1 denotes linear or branched alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, mono- or dialkylamino of 1 to 4 carbon atoms in each alkyl, phenyl, or benzyl, R.sup.2 denotes linear or branched alkyl of 1 to 4 carbon atoms, phenyl or benzyl, R.sup.3 denotes linear or branched alkyl of 1 to 4 carbon atoms or phenyl, R.sup.4 denotes linear or branched alkyl of 1 to 4 carbon atoms, or R.sup.3 and R.sup.4, together with the oxygen and the carbon atom whose substituents they are, form a 5- or 6 membered saturated ring which may be substituted by alkyl of 1 to 4 carbon atoms, which are effective against pests, especially insects and Arachnida, pesticides containing these pyridazinonyl-(di)(thio)-phosphoric (phosphonic) acid esters as active ingredients, and a process for combating pests with these active ingredients.

Abstract: Aroylureas of the formula ##STR1## where A denotes a phenyl, thienyl or pyridyl-3 radical which is mono- or polysubstituted by halogen, linear or branched alkyl of 1 to 4 carbon atoms, or linear or branched alkoxy of 1 to 4 carbon atoms, R denotes linear or branched alkyl of 1 to 4 carbon atoms or linear or branched alkoxy of 1 to 4 carbon atoms, and n denotes one of the integers 0, 1 and 2, which have an insecticidal and acarididal action, and a process for combating insects and mites with these active ingredients.

Abstract: New carbamates, a process for their manufacture by reaction of salts of pyrazolinediones with a carbamyl halide, and pesticides containing these new carbamates as active ingredients.The new carbamates may be used as insecticides and acaricides. They have an excellent action on sucking insects, especially aphids.

Abstract: New O,O-dialkylphosphonic acid esters having a strong insecticidal action, insecticides containing these compounds as active ingredients, a method of controlling insects, and a method for the preparation of the active ingredients.