Abstract: The disclosed compounds, such as 3-[5-[1-(2-chlorophenoxy)ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl- 2-imidazolidinone, are useful for preemergence and postemergence control of weeds, such as jimsonweed.

Abstract: The disclosed compounds, such as 3-[5-[1-(3,5-dichlorophenoxy) ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl-2-imidazolidinone, are useful for preemergence control of weeds, such as jimsonweed.

Abstract: The disclosed compounds, such as 3-[5-[1-(4-chlorophenoxy)ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl- 2-imidazolidinone, are useful for preemergence and postemergence control of weeds, such as jimsonweeds.

Abstract: Disclosed are compounds of the formula ##STR1## wherein R.sup.1 is alkyl, R.sup.2 is selected from the group consisting of hydrogen and alkyl; or R.sup.1 and R.sup.2 together with the nitrogen atom form a cyclic ring structure having 4 or 5 carbon atoms; m is the integer 0 or 1; when m is 1, R.sup.4 and R.sup.5 are each independently selected from the group consisting of hydrogen and alkyl or up to 3 carbon atoms; when m is 0, R.sup.4 is hydrogen and R.sup.5 is the same as defined above; R.sup.3, R.sup.6, R.sup.7, R.sup.8, R.sup.9 are each independently selected from the group consisting of hydrogen and alkyl; n is an integer from 0 to 2; and Z.sup.1 and Z.sup.2 are each independently selected from the group consisting of oxygen and sulfur. These compounds are useful as herbicides.

Abstract: The disclosed compounds such as 3-[5-[1-(2-nitrophenoxy)ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl-2 -imidazolidinone are useful for preemergence control of weeds such as jimsonweed.

Abstract: The disclosed compounds such as 3-[5-[1-(2-methylphenoxy)ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl- 2-imidazolidinone, control weeds preemergence and postemergence.

Abstract: The specification discloses 5-alkylsulfonyl- and 5-alkylsulfinyl-1,3,4-thiadiazol-2-yl ureas which are characterized by a selective herbicidal activity against weeds while being innocuous against crop plants thus providing means and methods for the protection of fields of growing crops against infestation by undesirable weeds and grasses.

Abstract: Color photographic material is provided which contains at least one silver halide emulsion layer containing a yellow color coupler of the formula ##STR1## wherein G is the radical of a yellow coupler which is bonded to the heterocyclic ring by means of the active methylene group, Z is --CO-- or --SO.sub.2 --, M is hydrogen if Z is --CO--, or a substituent and R is hydrogen or a substituent.The new two-equivalent yellow couplers lead due to their improved reactivity (high maximum density), minimal fog and high fastness to light and outstanding spectral properties of the dyestuffs formed therefrom to a color photographic material of advantageous properties.

Abstract: The disclosed compounds such as 3-[5-[1-(2-methylphenoxy)ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl- 2-imidazolidinone, control weeds preemergence and postemergence.

Abstract: Weeds are selectively controlled in soybean fields by post-emergent application of a compound having the structural formula ##STR1## in which X represents bromo, fluoro, cyano or trifluoromethyl and R is hydrogen or methyl.

Abstract: New and valuable polycyclic compounds which contain nitrogen-containing rings and have a strong action on plants, agents for influencing plant growth containing these compounds, and a method of influencing plant growth with these compounds.

Abstract: New thiadiazole ureas are provided for the control of plant growth, especially of underisable weeds and grasses. Particularly effective are compounds which contain an organic substitutent in the 5-position of the thiadiazole portion.

Abstract: New thiadiazole ureas are provided for the control of plant growth, especially of undesirable weeds and grasses. Particularly effective are compounds which contain an organic substituent in the 5-position of the thiadiazole portion.

Abstract: 1-Alkyl-1-(1,3,4-thiadiazol-2-yl)-3-phenyl-ureas of the formula ##STR1## in which R.sup.1 is alkyl,R.sup.2 is phenyl or substituted phenyl, andX is hydrogen or halogen,which possess fungicidal properties.

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: This invention discloses new compounds of the formula ##STR1## wherein R.sup.1 is selected from the group consisting of alkyl of up to 3 carbon atoms, cycloalkyl, alkenyl, chloroalkyl, bromoalkyl, alkoxy, alkylthio, alkylsulfonyl and alkylsulfinyl; R.sup.2 is selected from the group consisting of alkyl, alkenyl, haloalkyl and ##STR2## wherein R.sup.4 and R.sup.5 are each selected from the group consisting of hydrogen and alkyl; and R.sup.3 is selected from the group consisting of alkyl, alkenyl, haloalkyl, alkynyl, alkoxyalkyl, cycloalkyl and ##STR3## WHEREIN X is selected from the group consisting of alkyl, alkoxy, halogen, haloalkyl, alkylthio, nitro and cyano; n is an integer from 0 to 3; and m is the integer 0 or 1. Further disclosed is the herbicidal utility of the foregoing compounds.