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: Diurethanes of the general formula ##STR1## wherein R.sub.1 is allyl or a C.sub.1 to C.sub.4 alkyl radical possibly substituted by halogen;R.sub.2 is a C.sub.1 to C.sub.4 alkyl radical possibly substituted by halogen, a C.sub.3 to C.sub.4 alkenyl or alkinyl radical, cyclohexyl, phenyl, C.sub.1 to C.sub.3 alkylphenyl, C.sub.1 to C.sub.3 alkoxyphenyl, halogen phenyl, benzyl or phenylethyl;R.sub.3 is a C.sub.3 or C.sub.4 hydrocarbon radical possibly substituted by halogen, or halogen ethyl; orR.sub.1 is ethyl or allyl, R.sub.2 is phenyl, C.sub.1 to C.sub.3 alkylphenyl, C.sub.1 to C.sub.3 alkoxyphenyl or halogen phenyl, and R.sub.3 is methyl or ethyl;are provided as herbicidal agents notably in cotton cultivation in the pre-emergent and emergent stages of development of such cotton; including other cultivations such as for cereal, corn and soybean.

Abstract: A urea derivative of the formula ##STR1## in which R is hydrogen, alkyl, alkenyl, cyanoalkyl or phenyl andR.sub.1 is ##STR2## X, if several, being the same or different and X being hydrogen, alkyl, alkoxy, halogenoalkyl, alkylthio, alkylsulfinyl, alkylsulfonyl, halogeno or nitro, and n being an integer from 1 to 3. The compounds are useful as reactive agents in herbicidal composition. The invention also concerns a herbicidal composition in which a compound of the invention is the active agent or one of the active agents.

Abstract: 2-(Dimethylcarbamoylimino)-1,3,4-thiadiazoline-3-carboxylic acid ester derivative of the formula ##STR1## in which R is an aliphatic hydrocarbon and R.sub.1 is an aliphatic hydrocarbon, a halogenated aliphatic hydrocarbon, an aromatic hydrocarbon, a substituted aromatic hydrocarbon, an aliphatic-aromatic hydrocarbon or a substituted aliphatic-aromatic hydrocarbon and X is oxygen or sulfur. The compounds have a high herbicidal activity against weeds.

Abstract: Carbanilic acid esters of the formula ##STR1## in which R.sub.1 is chloro- or bromoalkyl,R.sub.2 is phenyl, methylphenyl, halogenophenyl, trifluoromethylphenyl or methoxyphenyl,R.sub.3 is alkyl, alkenyl or alkinyl, and in whichX is oxygen or sulfur.The compounds have a high activity against various weeds with good compatibility with many agricultural plants, particularly potatoes.The invention also embraces a process for making the aforementioned compounds as well as herbicidal compositions in which the compounds are the active or one of the active agents.

Abstract: 2-(Dimethylcarbamoylimino)-benzthiazoline-3-carboxylic acid ester of the formula ##STR1## in which R is an aliphatic hydrocarbon, a substituted aliphatic hydrocarbon, an aromatic hydrocarbon or a substituted aromatic hydrocarbon and X is oxygen or sulfur.The compounds have an excellent selectivity action in regard to agricultural plants and also possess a superior herbicidal activity against mono- and di-cotyl weeds.

Abstract: 1,2,3-Thiadiazole-2-id-derivative of the formula ##STR1## in which R.sub.1 is hydrogen or alkyl which may be substituted in one or several places by oxygen or sulfur and wherein R.sub.1 has the meaning as given in the attached specification and wherein X is oxygen or sulfur and B is a univalent metal atom. The compounds have properties suited for controlling the natural growth and natural development of plants and in addition have a superior defoliating property.

Abstract: 1,2,3-thiadiazole-5-carboxylic acid derivatives having herbicidal and growth regulating activity and having the formula ##STR1## in which R.sub.1 is hydrogen or is alkyl of which the chain may be interrupted in one or several places by oxygen or sulfur or which may be substituted by halogen and in whichX is(a) --Y--R.sub.2, wherein R.sub.2 is hydrogen, alkyl which may be substituted, aryl which may also be substituted, aryl-C.sub.1 -C.sub.2 -alkyl which may also be substituted, or a univalent metal equivalent and wherein Y is oxygen or sulfur, or(b) wherein X constitutes the residue ##STR2## wherein R.sub.3 and R.sub.4 may be the same or different and have the meaning further defined in claim 1 of the accompanying specification.The compounds are soil- or leaf-applicable herbicides with a high activity against seed weeds and resistant weeds.

Abstract: 2-(Dimethylcarbamoylimino)-1,3,4-thiadiazolin-3-carboxylic acid esters of the formula: ##STR1## in which R and R.sub.1 are aliphatic hydrocarbon groups which may be halogenated, and n is 0, 1 or 2, are effective herbicides, and exhibit a high degree of selectivity toward cultivated plants.

Abstract: N-methylcarbanilic-[3-(ethoxycarbonylamino)-phenyl]-ester. The compound is a specific cotton herbicide. It is highly active against common weeds without causing harm to the cotton plants at any state of their development.

Abstract: 1,2,3-Thiadiazole-5-yl-urea derivatives of the formula ##STR1## in which R.sub.1 is hydrogen or alkyl of 1 to 5 carbon atoms, R.sub.2 is hydrogen or alkyl from 1 to 5 carbon atoms which latter may also have at least one oxygen or sulfur atom interposed in the carbon chain and wherein R.sub.3 is a heterocyclic hydrocarbon residue in which at least one nitrogen atom is present in the ring, which residue may also be substituted by the same or different substituents comprising alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen, nitro or trifluoromethyl. The compounds are effective as agents for growth retardation and defoliation of plants.The invention also comprises a process of making the product and compositions in which the products are the, or one of the, effective agents.

Abstract: 1,3,3-trimethyl-6-azabicyclo-(3.2.1)-octane-6-carboxylic acid ester of the formula ##STR1## in which R is an aliphatic hydrocarbon residue which may also be substituted, a cycloaliphatic hydrocarbon residue which may also be substituted, an aromatic hydrocarbon residue which may also be substituted or an araliphatic hydrocarbon residue and wherein X and Y are oxygen or sulphur. The compounds of the invention are characterized by a superior herbicidal activity in particular against monocotyl weeds. They also have excellent selective properties for agricultural plants.The invention also embraces a process of making the compounds of the invention and compositions in which the compounds of the invention form at least one of the active components.

Abstract: Benzodioxolan derivatives of the formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and are hydrogen, an aliphatic hydrocarbon residue, a halogenated aliphatic hydrocarbon residue, an aromatic hydrocarbon residue, a substituted aromatic hydrocarbon residue,A heterocyclic residue or a substituted heterocyclic residue,Or wherein R.sub.1 and R.sub.2 together with the adjoining carbon atom are a cycloaliphatic hydrocarbon residue which may additionally be substituted by nitrogen or oxygen or both, and wherein R.sub.3 is hydrogen or an aliphatic hydrocarbon residue,And wherein R.sub.4 is a saturated or unsaturated aliphatic hydrocarbon residue or is alkoxy and whereinR.sub.5 is hydrogen or is a saturated or unsaturated aliphatic hydrocarbon residue. The compounds have a high herbicidal activity against weeds and superior selective herbicidal properties for agricultural and horticultural plantations.

Abstract: New herbicidal 4-Methylphenyl-bis-Carbamates, and their method of preparation are provided.

Abstract: 1,2,3-Thiadiazole-5-yl-urea derivatives of the formula ##STR1## in which R.sub.1 is hydrogen or alkyl of 1 to 5 carbon atoms, R.sub.2 is hydrogen or alkyl from 1 to 5 carbon atoms which latter may also have at least one oxygen or sulfur atom interposed in the carbon chain and wherein R.sub.3 is a heterocyclic hydrocarbon residue in which at least one nitrogen atom is present in the ring, which residue may also be substituted by the same or different substituents comprising alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen, nitro or trifluoromethyl. The compounds are effective as agents for growth retardation and defoliation of plants.The invention also comprises a process of making the product and compositions in which the products are the, or one of the, effective agents.

Abstract: Carbanilic acid ester of the formula ##STR1## in which R.sub.1 is an aliphatic hydrocarbon residue which may also be substituted,R.sub.2 is a cyanoalkyl residue,R.sub.3 is an aromatic hydrocarbon residue which may also be substituted andY is oxygen or sulfur.The compounds are herbicidal agents with a broad spectrum of activity and of particular compatibility regarding cotton and other plantation cultures.

Abstract: Substituted phenyl thiocarbamates and the method of producing them, are provided for selective weed control in cultivated grasses.

Abstract: Substituted phenyl thiocarbamates either per se or herbicides contain them and methods for their production are provided herein. Such compounds are available for destroying or inhibiting undesirable plant growth in cabbages.

Abstract: (5-Alkylureido-1,3,4-thiadiazol-2-ylsulfonyl) acetic acid derivative of the formula ##STR1## in which R.sub.1 and R.sub.2 are hydrogen or alkyl and R.sub.3 is hydrogen, alkyl, univalent metal equivalent, an ammonium group or an alkyl ammonium group. The compositions are used for herbicidal purposes as the active agent in herbicide compositions.

Abstract: [5-(1,3-dimethylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid methylester (b.p. 113.degree. C.), [5-(1,3,3-trimethylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid ethylester (b.p. 95.degree. C.) and [5-(3-methylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid isopropylester (b.p. 143.degree. C.) in which R is hydrogen or alkyl. The compounds are useful as the active agents or one of the active agents in herbicidal compositions.