Abstract: There are provided novel nitroguanidine and cyanoguanidine compounds. A method of dessicating and defoliating plants by applying to the foliage thereof certain nitroguanidine or cyanoguanidine compounds and a method for the selective preemergence control of undesirable broadleaf weeds and grasses in the presence of graminaceous crops are disclosed.

Abstract: Aqueous herbicidal concentrates of the normally water insoluble alkanoic acid esters of ioxynil and bromoxynil are prepared by dissolving the esters in an aqueous solution of at least a threefold excess of a salt of herbicidal chlorobenzoic or chlorophenoxyalkanoic acids.

Abstract: Haloacyl and thiohaloacyl aryl-substituted oxazolidines and thiazolidines useful as active antidotes against crop injury when used with various herbicides; herbicidal compositions and utility of various herbicides and aryl substituted oxazolidines and thiazolidines having the formula ##STR1## wherein X and Y are independently oxygen or sulfur; R is haloalkyl or chloroalkenyl; R.sub.1 is hydrogen, lower alkyl, phenyl, naphthyl, substituted phenyl wherein said substituents are monofluoro, mono- or di- chloro, nitro, methyl, methoxy, or hydroxyl; R.sub.2 is hydrogen or lower alkyl; R.sub.3 is hydrogen, lower alkyl, hydroxymethyl, N-methyl carbamoyloxymethyl or dichloroacetoxymethyl; R.sub.4 is hydrogen or lower alkyl; R.sub.5 is hydrogen, lower alkyl or phenyl; and R.sub.6 is hydrogen; provided that at least one of R.sub.1 or R.sub.5 is phenyl, substituted phenyl or naphthyl.

Abstract: 2-Aryl-1,3-cyclopentanedione enol ester compounds exhibit outstanding acaricidal and herbicidal activity.

Abstract: Herbicidally active thiolcarbamates are employed in combination with certain allyl amine salts of thiocarbamic acid compounds having the formula ##STR1## wherein R.sub.4 and R.sub.5 are independently selected from the group consisting of allyl, alkyl substituted allyl, and lower alkyl groups having from about 1 to about 6 carbon atoms;R.sub.6 and R.sub.7 are independently selected from the group consisting of allyl, alkyl substituted allyl, and lower alkyl groups having from about 1 to about 6 carbon atoms; andX is oxygen or sulfur wherein at least one of R.sub.4 and R.sub.5 and at least one of R.sub.6 and R.sub.7 is an allyl group. In a typical application, the allyl amine salt of thiocarbamic acid compound is included in sufficient quantity to lessen the rate of soil degradation of the thiolcarbamate. As a result, the herbicidal effectiveness of the thiolcarbamate is enhanced and prolonged, rendering single application of the herbicide effective over a longer period of time.

Abstract: An herbicidal composition comprising cyanobacterin and a surfactant. Cyanobacterin obtained from extracts of blue-green algae or chemical synthesis when combined with a sticker such as non-ionic surfactants provides an heribicidal formulation which will adhere to green plants in a herbicidally effective amount.

Abstract: A known herbicide such as a urea, carboxylic acid ester, aminoacid, benzoic acid derivative, benzonitrile, phenol derivative, diphenyl ether, carbamate, phenoxyalkanecarboxylic acid, triazine, triazinone, triazinedione, heterocycle, dipyridil derivative or benzosulphonamide, is rendered more effective by being combined with a synthetic spreading agent such as a silicone oil, fatty acid ester or fatty alcohol, e.g. isopropyl myristate, metamitron, ametridion or methabenzthiazuran.

Abstract: The disclosure herein relates to 2-haloacetamides substituted on the amide nitrogen atom with certain specific alkenyl or heterocyclic aromatic radicals. These acetamides are useful as herbicides.

Abstract: Novel diphenyl ether hydrazine derivatives, particularly 2-nitro-5 (nucleus-substituted phenoxy) phenylhydrazine derivatives are provided. They are useful as a selective herbicide having a high herbicidal activity and residual efficacy.

Abstract: The sugar content of plants is increased by a method in which the plants are treated, from 1 to 15 weeks prior to harvesting, with a compound of the formula (I) ##STR1## where R.sup.1 is alkyl of 1 to 4 carbon atoms, R.sup.2 is alkyl of 1 to 4 carbon atoms, unsubstituted or halogen-substituted alkenyl of 3 to 5 carbon atoms or alkynyl of not more than 5 carbon atoms, R.sup.3 is a non-aromatic heterocyclic structure which has 5 to 7 ring members and no double bonds or one double bond in a heterocyclic ring, contains 1 or 2 hetero atoms from the group consisting of sulfur and oxygen, and can be substituted by alkyl of not more than 3 carbon atoms, and X is H or C00-alkyl, or one of its plant-tolerated salts.

Abstract: The growth of turf grass can be retarded by applying to said turf grass an effective growth retarding amount of a compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 are independently hydrogen, halogen, C.sub.1-6 alkyl, or haloalkyl; R.sub.4 is hydrogen; C.sub.1-4 alkyl, alkenyl, alkoxy, haloalkyl; C.sub.1-2 alkylamino, C.sub.1-2 alkylthio, C.sub.2-4 cycloalkyl, C.sub.2-6 alkoxyalkyl, C.sub.2-6 alkylthiomethyl, amino, phenoxy, phenamino, or furan; and R.sub.5 is hydrogen or C.sub.1-4 alkyl.

Abstract: A method for treating a stand of coniferous trees growing by natural processes and exposed to an atmosphere containing nitrogen pollutant compounds to improve the resistance of the trees to damage by acid rain. The method comprises the step of foliarly applying a sugar and source of potassium of magnesium to the coniferous trees growing in the stand of trees exposed to the atmosphere.

Abstract: N-Acyl-piperidone ketal compounds of the formula ##STR1## in which R.sup.1 represents alkyl or halogen,R.sup.2 represents halogen,R.sup.3 represents alkyl andR.sup.4 represents alkyl, orR.sup.3 and R.sup.4 together represent an optionally branched alkylene chain, andR.sup.5, R.sup.6, R.sup.7 and R.sup.8 independently of one another represent hydrogen or alkyl,and their use as antidotes for protecting crop plants from herbicidal damage.

Abstract: The soil life of herbicidally active thiolcarbamates is extended by certain organophosphorus compounds having the formula ##STR1## in which R.sup.4 is selected from the group consisting of C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 alkoxy; R.sup.5 is selected from the group consisting of C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.2 -C.sub.4 alkenoxy, and C.sub.2 -C.sub.4 alkenylthio; R.sup.6 is selected from the group consisting of phenyl, C.sub.1 -C.sub.4 alkylene, and C.sub.2 -C.sub.4 alkylthioalkylene; R.sup.7 is either phenyl or cyclohexenyl; X is oxygen or sulfur, and n is zero or one.

Abstract: New compositions for defoliating plants possessed of synergistic activity comprising(A) a compound of formula I ##STR1## in which R.sub.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sub.2 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkylthio,R.sub.3 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio or C.sub.3 -C.sub.8 -cycloalkyl,wherein R.sub.2 and R.sub.3 taken together with the nitrogen atom to which they are attached is a morpholino- piperidino- or pyrrolidino-group,X is oxygen or sulfur,Y can be the same or different and is hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.2 -alkyl, C.sub.1 -C.sub.4 -alkylthio, trifluoromethyl or nitro, andn is the number 1, 2, 3, 4 or 5,in combination with(B) a defoliant for plantsin a proportion of 1 to 99 parts by weight of component (A) to 99 to 1 parts by weight of component (B).

Abstract: A new flower-thinning agent is now provided, which is comprising as the active component 2-pyrrolidone-5-carboxylic acid, a salt thereof, a salt of an N-higher aliphatic acyl acidic amino acid, an ester of sugar with a higher fatty acid, or a plant sterol and advantageously exerts the flower-thinning effects superior to the known flower-thinning agents.

Abstract: An improved herbicidal formulation comprising a mixture of the isopropylamine salt of glyphosate and an effective potentiating amount of an ammonium, quaternary alkyl ammonium, alkali metal or alkaline earth metal thiocyanate.

Abstract: A method of inhibiting plant height growth without having any significant impact on flowering, which comprises applying to the above ground portion of the plant at a point in time when the plant is beyond the seed leaf stage, and at least at approximately at the first true leaf stage, a small but growth inhibiting amount of aminooxyacetic acid.

Abstract: The compound caulerpin whose formula is given hereinafter and is derived from a marine alga has been found to have certain auxin-like properties for the stimulation of plant growth, either by itself or in combination with other auxins. Since standard bio-assay for auxin activity does not give positive results with caulerpin, this is regarded as a new type of plant growth regulator.

Abstract: Metal salts and amine salts of 2-nitro-5-(halophenoxy)benzoic acids comprise a class of compounds that are highly effective pre- and post-emergence herbicides.