HU183097B - Herbicide composition containing inorganic salt and thiocarbamate derivative as active substances - Google Patents

Abstract

The present invention relates to an herbicidal composition comprising an inorganic salt and a thiocarbamate derivative, characterized in that it contains from 0.1 to 95% by weight of a) sodium sulfate or potassium sulfate and b) a thiocarbamate of formula I in the formula R and R2 are the same and 1 - C 4 alkyl, R 3 is ethyl in a mixture of 0.3: 1 to 3: 1 and optionally contains an um, Ν-diallyl dichloroacetamide antidote with one or more conventional carriers, preferably kaolin and / or diluent, preferably water or mixed with xylene and optionally emulsifying agent - alkylbenzenesulfonic acid sodium. > · 0 II C-S - /? 5 -1-

Description

The present invention relates to a two-component herbicidal composition comprising an inorganic salt and a thiocarbamate derivative as an active ingredient.

More particularly, the invention relates to herbicidal compositions which are active ingredients

(a) sodium sulphate or potassium sulphate; and

b) a thiocarbamate of formula I wherein R 1 and R ₂ are the same and are a mixture of C 1 -C 4 alkyl and R _{3 is} ethyl and optionally contain a known antidote, preferably N, N-diallyl dichloroacetamide.

Besides the successes achieved, the chemicalisation of agriculture carries numerous dangers. These include environmental problems, soil contamination, which damages both beneficial soil organisms and, for example, rain, irrigation and some of the organic compounds with herbicidal activity in rivers (rivers, lakes, etc.) and fish stocks. etc. Therefore, in addition to the benefits of using herbicide organic compounds, it is necessary to simultaneously reduce the amount of herbicide compounds used as far as possible while maintaining at least the same herbicidal activity.

It has been found that mixing these known herbicidal organic compounds with sodium sulfate or potassium sulfate and using the mixture as a herbicide allows the phytotoxicity of the organic herbicide compound to be reduced, if not eliminated, by simply being available in a substantial amount. , inorganic salts. The inorganic salts may optionally also be used in the form of a hydrate. The herbicidal activity of the above mixture is increased synergistically, or at least to the same extent as with the same amount of the herbicidal organic compound used alone; crop plants grow more vigorously and produce significant surpluses. The use of the combined herbicidal composition according to the invention is significantly more economical than the use of organic compounds having herbicidal activity alone, which are often difficult to produce, often difficult to produce, since less or more of these can be replaced by commercially available inorganic salts. In addition, the herbicidal activity of the combination preparation by simple mixing is increased, at least not reduced, compared to the same amount of standard herbicidal organic compounds used alone.

A preferred representative of the thiocarbamates of formula (I) used as the herbicidal component in the herbicidal compositions of the present invention is

S, ethyl dipropylthiocarbamate (EPTC).

The herbicidal compositions of the present invention may contain mixtures of inorganic salts and organic compounds having a herbicidal action in a weight ratio of 0.3: 1 to 3: 1.

Mixtures of inorganic salts and organic compounds of herbicidal activity according to the invention (herbicidal active compound mixtures) can be used as herbicides after processing into formulations.

Mixtures of inorganic salts and organic compounds having a herbicidal action are prepared according to conventional methods. In these compositions, the herbicidal active compound mixture of the present invention is admixed with solid or liquid inert carriers or diluents and optionally other excipients or carriers.

Such excipients may be, for example, surfactants such as wetting, emulsifying and dispersing agents, anti-caking agents, lubricants, adhesives, adhesives, colorants, corrosion inhibitors, suspending agents, agents which are opposed to those in the treated area. or other biologically active substances and / or substances which maintain or enhance the biological activity.

Suitable solid carriers or diluents include inactive minerals such as aluminum silicate, talc, calcined magnesium oxide, diatomaceous earth, tricalcium phosphate, cork dust, carbon black, substances such as kaolin and bentonite, montmorillonite, diatomaceous earth, attapulgite, phosphate, calcium carbonate, mica, pyrophyllite, dolomite, gypsum, colloidal silica, Fuller earth, Hewitt earth, porcelain earth, etc.

Suitable liquid carriers or diluents include aqueous, organic and / or aqueous-organic solvents such as water, ketones such as acetophenone, cyclohexanone, isophorone, aromatic hydrocarbons such as benzene, toluene, xylene, alkylnaphthalenes, tetrahydronaphthalene. , chlorinated hydrocarbons such as chlorobenzenes, dichloromethane, trichlorethylene, tetrachloroethane, alcohols such as methanol; butanol, isopropyl alcohol, propylene glycol, diacetone alcohol, kerosene, mineral, animal and vegetable oils, aliphatic mineral oil fractions, high aromatic petroleum distillates, e.g. naphtha and distilled tar oil, polar organic solvents such as dimethylsulfoxide, dimethylformamide, and mixtures of the above liquids.

The wetting, dispersing and emulsifying surfactants used may be of the ionic or non-ionic type.

Nonionic agents include, for example, ethylene oxide, C 10 -C 20 fatty alcohols such as oleyl alcohol, cetyl alcohol, octadecyl alcohol, or alkylphenols such as octylphenol, nonylphenol, octylcresol, or amines such as the condensation products of oleinamine with mercaptans such as dodecyl mercaptan or carboxylic acids and partial esters of long chain fatty acids and hexitan anhydrides, condensation products of the above partial esters with ethylene oxide, fatty acid esters of lecithins, polyalcohols and the like.

The ionic agents can be cationic or anionic.

Suitable cationic agents are, for example, quaternary ammonium compounds such as cetyltrimethylammonium bromide, cetyladinium bromide, dioxoethylbenzyldodecylammonium chloride and the like.

Suitable anionic agents are, for example, soaps,

183,097 salts of aliphatic monoesters of sulfuric acid such as sodium lauryl sulfate, sodium salt of dodecyl alcohol sulfuric acid, salts of sulfonated aromatic compounds such as sodium dodecylbenzosulfonate, sodium, calcium, or ammonium, mixtures of sodium salts of diisopropyl and triisopropyl naphthalenesulphonic acids, of sodium petroleum sulphonic acid, or of potassium or triethanolamine of oleic or abietic acid, and the like.

Suitable suspending agents are, for example, hydrophilic colloids such as polyvinylpyrrolidone, sodium carboxymethylcellulose and plant gums such as acacia gum, tragacanth gum.

Suitable adhesives such as lubricants such as calcium or magnesium stearate, adhesives such as polyvinyl alcohol, cellulose derivatives or other colloidal materials such as casein or mineral oils.

Suitable dispersants are, for example, methylcellulose, lignin sulfonates, alkyl naphthalene sulfonates and the like.

Suitable additives for distribution, adhesion, rain resistance or penetration include fatty acids, resins, glues, casein or alginates.

The active ingredient components of the compositions of the present invention can be formulated with various carriers or excipients as described above to form various solid or liquid compositions.

Solid compositions can be, for example, powders, preferably wettable powders and / or dispersible powders, granules or granules, pastes and the like.

Liquid formulations include, for example, solutions, directly sprayable solutions, either aqueous solutions or solutions in organic solvents including oily solutions and miscible oils, dispersions, suspensions, preferably aqueous suspensions, aqueous or oily emulsions. , invert emulsions, etc.

For example, the powder formulations may be prepared by thoroughly mixing the mixture of the inorganic salt (s) and the organic compound (s) of herbicidal activity, hereinafter referred to as herbicidal active compound, with one of the inert solid carriers mentioned above.

Wettable or dispersible powders are prepared by admixing the herbicidal active compound according to the present invention with one of the above-mentioned wetting or dispersing agents in addition to an inert solid carrier.

For example, the granular compositions may be prepared by dissolving the herbicidal active compound mixture of the invention in a solvent, in the presence of a binder, a particulate carrier such as porous granules such as pumice or attaclay, mineral non-porous granules such as sand or clay earth. , or applied to organic granules such as black earth or cut tobacco stems, optionally dried. Further, a granular composition can be prepared by compressing the active ingredient mixture with powdered minerals in the presence of a lubricant and binder, cutting the compressed material and sifting it to the desired particle size. A preferred embodiment of the granular preparation is dry or wet granulation, which may be either wet granulation or structural granulation.

Aqueous solutions, dispersions, suspensions and emulsions of the brain are prepared by dissolving the herbicidal active compound mixture of the invention in an organic solvent, optionally containing one or more wetting, dispersing, suspending or emulsifying agents ^, and then adding the resulting mixture to water. which, if desired, may also contain one or more wetting, dispersing or emulsifying agents.

Mixable oils are prepared by dissolving or finely distributing the herbicidal active compound mixture of the present invention in a suitable solvent, which is slightly miscible with water, with the addition of an emulsifier.

Directly sprayable solutions are prepared by dissolving the herbicidal active compound mixture according to the invention in a solvent having a high or medium boiling point, preferably above 100 ° C.

An invert emulsion may be prepared by emulsifying water in an oily solution or suspension of the herbicidal active compound mixture of the present invention in water prior to or during spraying.

For the preparation of aqueous applications, it is particularly suitable to use high-concentration emulsion concentrates, pastes, wettable spray powders which can be diluted with water to the desired concentration before use. These concentrates are formulated so that they can be stored for an extended period of time and, after storage, dilute with water to form a homogeneous aqueous formulation that can be used with conventional spraying equipment. The concentrates generally contain from 10 to 85% by weight, preferably from 25 to 60% by weight; after this dilution, the aqueous preparation has an active ingredient content of 0.1 to 3.00% by weight.

The active ingredient components of the compositions of the present invention can be formulated with various carriers or excipients as described above to form various solid or liquid compositions.

Solid compositions can be, for example, powders, preferably wettable powders and / or dispersible powders, granules or granules, pastes and the like.

Liquid formulations include, for example, solutions, directly sprayable solutions, either aqueous solutions or solutions in organic solvents including oily solutions and miscible oils, dispersions, suspensions, preferably aqueous suspensions, aqueous or oily emulsions. , invert emulsions, etc.

For example, the powder compositions may be prepared by thoroughly mixing a mixture of the inorganic salt (s) and herbicidal organic compound (s) of the present invention, hereinafter herbicidal active ingredient mixture, with any of the inert solid carriers mentioned above.

183,097

Wettable or dispersible powders are prepared by admixing the herbicidal active compound according to the invention with a wetting or dispersing agent as described above in addition to any inert solid carrier.

For example, the granular compositions may be prepared by dissolving the herbicidal active compound mixture of the invention in a solvent, in the presence of a binder, a particulate carrier such as porous granules such as pumice or attaclay, mineral non-porous granules such as sand or clay earth. , or applied to organic granules such as black earth or cut tobacco stems, optionally dried. Further, a granular composition can be prepared by compressing the active ingredient mixture with powdered minerals in the presence of a lubricant and binder, cutting the compressed material and sifting it to the desired particle size. One preferred embodiment of granular compositions is dry or wet granulation, which may be either wet granulation or structural granulation.

Aqueous solutions, dispersions, suspensions or emulsions are prepared by dissolving the herbicidal active compound mixture of the present invention in an organic solvent, optionally containing one or more wetting, dispersing, suspending or emulsifying agents, optionally adding to water, optionally it may also contain one or more wetting, dispersing or emulsifying agents.

Mixable oils are prepared by dissolving or finely distributing the herbicidal active compound mixture of the present invention in a suitable solvent, which is slightly miscible with water, with the addition of an emulsifier.

Directly sprayable solutions are prepared by dissolving the herbicidal active compound mixture according to the invention in a solvent having a high or medium boiling point, preferably above 100 ° C.

An invert emulsion may be prepared by emulsifying a solution or suspension of the herbicidal active compound mixture of the invention in water prior to or during spraying.

For the preparation of aqueous applications, it is particularly suitable to use high-concentration emulsion concentrates, pastes, wettable spray powders which can be diluted with water to the desired concentration before use. These concentrates are formulated so that they can be stored for an extended period of time and, after storage, dilute with water to form a homogeneous aqueous formulation that can be used with conventional spraying equipment. The concentrates will generally contain from 10 to 85% by weight, preferably from 25 to 60% by weight of the active ingredient, and after this dilution, the aqueous composition will contain from 0.1 to 3.00% by weight.

The amount of the herbicidal active compound mixture required to achieve the desired effect in the herbicidal compositions of the present invention may vary within wide limits, depending on the method of preparation and use, more particularly 0.1 to 95% by weight. In the so-called "ultra-low-volume (ULV) application method, the herbicidal active compound mixture of the present invention can be used with very small amounts of additives, preferably 90-95% by weight, from very fine spraying devices, preferably from airplanes. . In the case of diluted agents, this concentration may generally range from 0.1% to 20% by weight, and in the case of concentrated agents, from 20% to 95% by weight. The wettable powders contain, for example, from 5 to 80% by weight, preferably from 10 to 60% by weight, in the emulsifiable concentrate from 5 to 70% by weight, preferably from 10 to 50% by weight, and from 0.5 to 10% by weight, preferably from 1 to 5% by weight. % may.

The herbicidal compositions of the present invention may be sprayed, dusted or sprayed, soil irrigators, dip baths, etc. however, the type of preparation will always be selected according to the requirements of the intended use.

The herbicidal composition according to the invention is applied in a known manner to the soil and / or to the seeds and / or to the soil and / or to the plant and / or to certain parts of the plant.

For example, the treatment of the seeds may be carried out by coating the seeds with the herbicidal mixture according to the invention, optionally with carriers, while mixing. The herbicidal active compound mixture may also be applied to the seeds together with the above-mentioned surfactant wetting agents and optionally carriers. In this case, the mixture of the herbicidal active ingredient mixture, the surfactant and the carrier material is first moistened with a little water and then the seeds are mixed with the suspension.

The herbicidal compound according to the invention may also be applied to the furrow when sowing seeds, in the form of a powder mixture with sand, soil or powdered solid carriers as mentioned above, optionally with one of the above-mentioned surfactants.

The herbicidal active compound mixture of the invention may also be applied to the seeds in the form of an aqueous spray optionally containing any of the above surfactant dispersants and / or powdered solid carriers before, during or after sowing.

The composition comprising the herbicidal active compound mixture of the present invention is applied to the environment of the plants or to parts of the plants, such as leaves, for example by spraying, dusting or in the form of an aqueous spray, etc. or applied to the soil, for example by soil irrigation, flooding or incorporation into the soil, whereby the seeds are sown in the furrows in the treated soil.

The herbicidal compositions of the invention can be used to control both monocotyledonous and dicotyledonous weeds. The treatment can be carried out before emergence (preemergent) or post emergence (postemergent) or by incorporation into soil.

It has now been found that the herbicidal composition according to the invention is, in particular, a plant crop

183 097 selective herbicide in maize culture.

The dosage required for a satisfactory effect of the herbicidal composition of the invention depends on many factors, such as the species, condition of the crop to be treated, other plants growing in the vicinity of the crop to be treated, the species of weed to be controlled, its application, the herbicidal composition. climatic conditions and the treatment before or after emergence of the plants or in the soil and the application of the composition. Accordingly, the optimum dose is determined empirically in each case. Usually, however, 0.1 to 30 kg of active substance is used per hectare.

The following examples illustrate the herbicidal composition according to the invention without limiting it.

Example 1

0.07 L of Sutan ^R 6E commercially available Butylate (S-ethyldiisopropylthiocarbamate) plant protection product (0.05 kg active ingredient) is added to 10 L of water with stirring and then 0.05 kg of potassium bisulfate is dissolved. . The solution is used as a spray.

Example 2

S-ethyldiisobutylthiocarbamate 60.0%

KHSO ₄ 30.0% kaolin 1.0% alkylbenzenesulfonic acid sodium 1.0% sulfite lye powder 8.0%

The components are made into a wettable powder composition as described herein by homogenizing each component in a mixing drum and grinding it to a particle size of less than 200 µ.

The formulation is diluted with water to form a spray solution containing 0.2-5% of the active ingredient according to the requirements of use.

Example 3

S-ethyldiopropylthiocarbamate 30%

NaHSO ₃ 10% kaolin 50% colloidal silica 3% sulphite alkaline powder 7%

The above components were prepared as a wettable powder formulation as in the previous example and then sprayed.

Example 4

S-ethyldiopropylthiocarbamate 10%

NaHSO ₄ .H ₂ 0 10% polyoxyethylene sorbitan monooleate 5% xylene 75%

The components are prepared as described herein to form an emulsion concentrate by dissolving the active compound and surfactant in xylene with vigorous mixing.

The composition is prepared by spraying with water in a known manner.

Example 5

S-ethyldiopropylthiocarbamate 15%

KHS0 ₄ 5% polyoxyethylene sorbitan monooleate 10% polyoxyethylene sorbitan trioleate 10% xylene 60%

The above components were prepared as an emulsion concentrate as described in the previous example and then sprayed.

Example 6

Screening tests

The susceptibility of monocotyledonous and dicotyledonous species to each of the herbicidal organic compounds was taken into account in the selection of the test plants.

Depending on the organic compounds having A. herbicidal activity, different test plants are tested alternately. Among the monocots, Zea mays (corn), Arena sativa (oats), Hordeum distichon (barley), Panicum miliaceum (millet), Setaria glauca (dwarf muhar), Echinochloa crus-galli (cocksfoot); of the dicotyledonous species Trifolium pratense (red clover), Papaver somniferum (poppy), Beta vulgaris (sugar beet), Solanum lycopersicum (tomato) and Brassica napus (rapeseed) are the test plants.

In a greenhouse, place a 5 cm high quartz sand in a 32 x 27 cm plastic tray, place the seeds on it and cover with 1 cm thick river sand for even germination. 1% or 2% by weight of the standard herbicidal organic compound (s) and mixtures of the herbicidal organic compound (s) with sodium bisulphate monohydrate and / or potassium bisulphate and / or sodium bisulphite. solution. Spray 100-100 ml of the solution onto a surface of 1 m ² in the center of which the seed seed tray is placed, which is equivalent to 10 and 20 kg / ha, respectively. Spraying is performed with a laboratory hand-held sprayer by applying multiple overalls so that an equal amount of spray is applied over the entire surface of 1 m ² . Herbicidal and selective5

183,097 disputes are evaluated on the basis of the percentage of dead and sown seeds, as well as the bonitality of phytotoxic damage, by counting seedlings at two-week intervals and evaluating for possible phytotoxic damage.

Seeds of test plants shall be sown according to the size and extent of the seeds:

10 pieces of Zea mays (corn),

10 pieces of Avena sativa (oats),

10 pieces of Hordeum distichon (barley),

10 pieces of Panicum miliaceum (millet),

10 pieces of Setaria glauca (muhar),

50 pieces of Echinochloa crus-galli (Cocksfoot),

50 pieces of papaver somniferum (poppy),

10 units of Beta vulgaris (sugar beet),

10 pieces of Brassica napus (rapeseed),

Solanum lycopersicum (tomato) 50 db. Prepare a mixture of 1 to 1 g of herbicidal active ingredient from EPTC (S-ethyl dipropylthiocarbamate) and sodium bisulfate monohydrate in 100-100 mL of 0.012 g of Nonit (dioctylsulfosuccinate sodium) per 100% by weight. in methanol (60:40), similar to the standard EPTC. The solutions are sprayed onto a surface of 1 to 1 m ² , the center of which is previously seeded in a plastic tray prepared as described above. In this way, a pre-emergence treatment is carried out and the effect of the herbicidal compound mixtures is tested at a dose of 10 kg / ha.

The results of the test are given in the table below:

Name, number, dose of drug Test plants Destruction ,, - a 100% EPTC standard (2478) 10 kg / ha 575 s'% EPTC + + NaHSO ₄ . H ₂ O (2481) 10 kg / ha 40.8 s% EPTC + + NaHSO ₄ . h ₂ o (2482) 10 kg / ha Zea mays 0 (depression) 0 0 Avena sativa 100 100 100 Trifolium pratense 75 70 60 Papaver somniferum 100 100 100 Brassica napus 0 0 0 Panicum miliaceum 80 95 95 Setaria glauca 75 95 95 Echinochloa crusgalli 60 85 85

Experiments show that the standard has a depressant effect on Zea mays (maize), whereas herbicidal mixtures do not. It also appears from the data in the table that the herbicidal activity of herbicidal active compound mixtures against resistant monocotyledonous weeds against Panicum miliaceum (millet), Setaria glauca (muhar) and Echinochloa crusgalli (cockroach) is increased by 20-25%.

Example 7

Small plot experiments

The experiments were carried out uniformly in four replicates on a medium brown brown forest soil in a Latin brick arrangement. Soil characteristics: hardness number: 38; potassium chloride pH 7.16; aqueous pH: 7.9; humus content: above 42 cm: 1.92. In the year preceding the experimental year, the crop was pea. Soil preparation and fertilization were carried out in accordance with commercial practice. The chemicals were sprayed at a rate of 1000 L / ha water using a backpack sprayer at the occasional kg / ha doses.

Plots of 3.5 x 5 m = 17.5 m ^{2 are} sown with MVTC-435 maize at 70 cm row spacing and 30 cm planting distance. Each parcel is treated with further formulations of the composition described below by the presowing and / or preemergent method.

Preparation: 14 ml Eradicane ^R treatment: pesowing

Formulation B: 8.7 ml of Eradicane ^R and 5.9 g of sodium bisulfate monohydrate, treated with pièsowing

Preparation C: 9.9 ml Eradicane ^R and 4.9 g sodium bisulphite, treatment: presowing

Presowing and / or pre-emergence treatment was done on the same day as sowing.

On the 50th, 80th and 100th days after sowing, weed cover was determined and on the 50th day the height of the plant was measured. The results observed are summarized in the table below.

In contrast to Eradice ne ^R (formulation A), which is used as a standard for preservation, formulation B of the invention contains 37.5% less Eradicane ^R in addition to sodium bisulfate monohydrate. However, formulation B is used in substantially the same dosage as standard formulation A. Preparation B (combination of Eradicane ^R and sodium bisulfate monohydrate) has the same herbicidal activity as standard formulation A. On the other hand, it stimulates the growth of maize, because the plant is 14% taller, and is visually more vigorous and healthier zcld color. Dry yield is also more favorable than standard Eradicane ^R (formulation A), despite the fact that Eradicane ^R contains artidotum (Ν, Ν-diallyl dichloroacetamide) for the herbicide EPTAN (EPTC; On the other hand, the dose of Eradicane ^{R was} reduced from 8 1 / ha to 5 1 / ha (i.e. 37.5%).

Composition C (Eradicane ^R and sodium bisulfite combination) of the present invention is qualitatively superior to Eradicane ^R (Preparation A) used as a standard. The crop was weed free for 80 days and weed coverage on day 100 for 57% of the weed cover of the standard (Preparation A) parcel, ie slightly more than half. The maize is 10% higher and the dry yield is practically stan-61

183,097

Preparation sign and experiment number Treatment way Dose Plant height in cm % Weed Cover Yield is the standard formulation %-in 50 80th 100th THE 1202/1 presowing 8 1 / ha 51 + 23 54 100 B 1202/1 presowing 5 1 / ha and 3.4 kg / ha 58 + 19 54 105 C 1202/1 presowing 5.7 1 / ha and 2.8 kg / ha 57 + + 31 98

Explanation:

+ = the amount of weed is so small that it cannot be expressed as a percentage,

Eradicane = commercially available pesticide formulation. This plant protection product contains the active ingredient EPTAN (EPTC; S-ethyl dipropylthiocarbamate) and an antidote for Ν, Ν-diallyl dichloroacetamide.

dard (Preparation A). The present invention ₂ o serum Rint Composition C achieved advantageous effect of these two (herbicides and plant growth promoting effect) in decreasing about 30% Eradicane ^R (A composition).

Example 8

Large-plot experiments

The sandy loam and meadow loam soils on which maize was grown the previous year were harvested as follows: the stubble was dialed and the 25 cm deep plow was cultivated with a double disc harrow. The soil was then sampled and then fertilized with NPK fertilizer equivalent to 260 kg N / ha, 98 kg P ₂ O _s / ha and 275 kg K ₂ O / ha in the autumn (October snow). In the spring of the experimental (next) year (at the end of March) the soil was leveled and then subjected to combinatorial treatment (cultivator, soil comb clods).

The size of the experimental plots is 20 x 250 m = -5.000 m ² = 0.5 ha. Next to the experimental plot was placed the control plot (denoted II), which was 100 x 250 m = 25,000 m ² = 2.5 ha ⁴ , which is the size of the five experimental plots taken together.

Before sowing, the soil presowing 7.2 kg / ha Eradicane ^R + 10 kg / ha plant treated with combination composition according to the invention increase in ₅ θ kedésszabályozó salts. Eradicane ^{R is} the name of a commercial plant protection product. This plant protection product is EPTAN / EPTC; Cetyl dipropylthiocarbamate) and N, N-55 diallyl dichloroacetamide antidote.

A combination product according to the invention and ^R Eradicane or spray mixture was prepared so as to separate the diluted Eradicane ^R -t, and this diluted Eradicane ^R permedé- added an aqueous solution of salts of the present invention, 60 offer.

The total volume of the combination sprayer (Eradicane ^R and plant growth regulator salt) was 170 L / ha, which was applied with a BIG-A sprayer. 65

The following plant growth regulating salts were applied to each experimental plot:

Parcel number salt designation 1/1 NaHSO ₄ H ₂ O 1/2 NaHSO ₃ 1/3 KHS0 ₄

In October, the corn was harvested with a John Deere harvester. The moisture content of the grain maize was determined (35-39%) and, in view of this, the yield was converted to "May crumb". The results are summarized in the following table:

Parcel number yield increase relative to the average of the 2.5 ha control plot 1/1 + 16.7% 1/2 + 13.9% 1/3 + 30.3%

The table shows that 0.5 ha. In large-plot experiments and 2.5 ha controls, the plant growth regulating salts of the invention produce significant yields. This result is all the more surprising because the composition of the sample taken before the autumn fertilization:

129 mg N / 100 g soil, 28 mg of P ₂ 0 _5/100 g soil 20 mg K ₂ O / l 00 g soil and the soil is such a high K ₂ O-containing fertilizer is treated as described in Example beginning volume.

Claims (5)

Patent claims CLAIMS 1. An herbicidal composition containing an inorganic salt and a thiocarbamate derivative as an active ingredient, characterized in that the active ingredient is present in an amount of 0.1 to 95% by weight. -7183 097 (a) sodium bisulphate or potassium bisulphate or sodium bisulphite or potassium bisulphite; and b) a thiocarbamate of formula I wherein R 1 and R ₂ are the same and are C 1 -C 4 alkyl, R _{3 is} ethyl - A 0.3: 1 to 3: 1 mixture and optionally an antidote for Ν, Ν-diallyl dichloroacetamide with one or more conventional carriers, preferably kaolin, and / or diluents, preferably water or xylene, and optionally mixed with an emulsifier, preferably alkylbenzenesulfonic acid sodium, and / or a dispersant, preferably polyoxyethylene sorbitan monooleate. 15 2. The herbicidal composition of claim 1, wherein the thiocarbamate derivative is S-ethyl dipropylthiocarbamate (EPTC). The herbicidal composition according to claim 1 or 2, characterized in that the inorganic salt is sodium bisulfate, optionally a hydrate thereof. The herbicidal composition according to claim 1 or 2, wherein the inorganic salt is potassium bisulfate. 5. The herbicidal composition according to claim 1 or 2, wherein the inorganic salt is sodium bisulfite.