DE2451542A1 - HERBICIDAL COMPOSITIONS - Google Patents

Description

The present invention relates to a method of controlling weeds, to herbicidal compositions and their manufacture.

In particular, the invention relates to a method for controlling weeds in locations which are or may be infested with weeds, which method consists in applying &&& to the location in question

a) 2-frthojty-2,3-dihydro-3,3-diraethylbenzofuran-5-yl-methanesulfonate and

b) S-Athojiylcarbonylaminophenyl-N-phenylcarbamat and / cder . 3-K3ttioxycarbonyla! Ainophenyl-N- (3,5-dimethylphenyD-

cartosimat
be applied.

The invention further relates to a herbicidal composition which contains components a) and b).

It was found that components a) and b) obviously the weeds against each other's actions make more sensitive, so that the inventive method and the composition of the invention is unexpectedly advantageous especially when used in weed control in sugar beet.

The components a) and b) are synergistic and surprisingly effective against weeds. The procedure and the Composition can be used to target a larger area to weed species when this is the case, when either a) or b) is used alone. The 'inventory

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parts a) and b) are also effective in lower doses, than that in which a) or b) alone is effective. Furthermore, they are safe for crops such as sugar beets. When the components a) and b) are finally applied separately in the process according to the invention, that is the point in time less critical to the application than when b) is used alone.

Each of the two essential ingredients should be used in an amount of 1 to 100 parts. if unless otherwise indicated, parts, proportions and percentages in this description are based on weight. The ratio of a) to b) is preferably 1:10 to 10: 1, in particular 1: 4 to 4: 1. Usually only one will only component b) used.

The essential herbicides a) and b) can be used together in a composition which contains a) and b). The compositions can be made by mixing the ingredients. Usually the compositions are first made up in the form of concentrates, for example having a total content of 0.5 to 85% of the essential ingredients, and these are then diluted with water or a hydrocarbon, usually water, for use, generally in such a way that that the total concentration of the essential ingredients is 0.05 to 4 % , although it can be up to 50% or more when sprayed from an aircraft. The compositions according to the invention

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Settlements therefore usually contain a total of 0.05 to 85% of the essential components.

Usually the compositions contain a surfactant and / or a carrier.

The carrier can be a liquid, e.g. VJasser (e.g. VJasser used to dilute a concentrate is used for its application). A concentrate containing water as a carrier can advantageously also be a contain surfactant. According to one embodiment, a) and b) with water, a wetting agent and a suspending agent, usually in a stirred ball mill, the grinding media, such as steatite balls, contains, ground to a particle size for both a) and b) of preferably less than 5 .u, with a flowable suspension concentrate is obtained.

The carrier can also be a liquid other than water, for example an organic solvent, usually a water immiscible solvent, for example a hydrocarbon with a boiling point of 130 to 270 ° C, in which the essential components are dissolved or suspended are. A concentrate containing an organic solvent expediently also contains a surfactant so that the concentrate acts as a self-emulsifiable oil when mixed with water. According to a a special method is used to produce an emulsifiable concentrate, in that, preferably with heating for the purpose of better solution, the components a) and b), one or more emulsifiers

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and a water-immiscible solvent, which is conveniently is primarily isophorone, to give a solution which is usually filtered or centrifuged is used to remove insoluble impurities au.

The carrier can be a solid which finely divides can be. Examples of suitable solids are clays, sand, mica, chalk, attapulgite »diatonite, perlite and sepiolite, synthetic solid supports "? .. B. Silicas, silicates and Lignosulphonates and solid D ^ .nrj greens.

Nestable powder that rSmeU in water. dispsrgierbsr are, can be produced in that the component © a) and b) mixed in particle form with oinons carrier or the melted components a) and b) sprayed onto the carrier, a wetting agent and a dispersing agent are sprayed with it and the whole mixture of powders in a liquid concoction bowl be ground or pulverized to a particle size sufficiently small that the wettable powder in the Use can form the desired suspension. The term "surfactant" is used in the broadest sense and includes materials referred to as emulsifying agents, dispersing agents, and butchering agents. Such means are well known in the herbicidal art.

The surfactants used can be anionic surfactants, for example Soaps, fatty sulfate esters, such as dodecyl sodium sulfate, octadecyl

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.natriunsealifat ured CetylnKitriunsulfr.t :, fatty aromatic sulfonates ,, wio hlky ibonaolswlfonairG or Butylnaphthalinsulf ornate ₉ konpleztero Fettsulfοϊκνΐο how the Amidkondensationspredukt of DIsSutc and? 3-r? ettiyltaurin sodium sulphonate of dioctyl succinate or.

DI® obspfiachsnAktivcn agents can also non-ionic agents seiim fesispißlsr-aiso Randonsationsprodukte of fatty acids, fatty alcohols or phenols with festtsubstituierten Äthyleno ^ yd "cdleE" fatty acid ester and ethers of sugars or aehrwertisen AlhoSioIcn ₉ or di _G from the latter by condensation rait products ftthylcnonyd received, or the products known as Bloekpolyracrisate of ethylene oxide and propylene oxide.

The surfactants can also be cationic Medium, for example cctyltrioethylammonium bromide.

Preferred surface-active agents are fatty alkyl sulfates, Alkyl aryl sulfonates, fatty alkyl ethoxylates, sulfated fatty alkyl ethoxylates, Dialkyl sulfosuccinate esters, lignosulfonate salts, sulfonated naphthalene-formaldehyde condensates and sulfonated Urea-forutaldehyde condensates.

The components a) and b) can with a non-phytotoxxschen oil, for example Agri-Oil Plus or Sun Oil HE.

The components a) and b) can immediately before

mixed of use. However, they are expedient to travel has already been mixed beforehand.

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The compositions are usually before emergence of the weeds applied. To control weeds in crops, e.g. sugar beets, you can do this before sowing the fruit are applied (with or without incorporation of the composition into the soil), but they are preferably applied after applied to the emergence of the crops.

Instead of using the components a) and b) together in a composition as described above these can be used separately in analogous compositions containing only a) or b), in particular as, or part of, a chemical weed control program chemical weed control program for one harvest season. The component b) is preferably after the emergence of Field crops applied. It is particularly advantageous to use component a) before component b); the time of Application of b), for example after the emergence of the Sugar beet, then, is much less critical than when b) used alone in a chemical weed control program will. Component a) is preferably applied after planting, but before the fruit emerges.

It is possible to combine the simultaneous use of a) and b) and an afejrandfefesign ncia use of a) and b). According to one embodiment, a) is applied after planting, but before emergence of the fruit, whereupon a) and b) are applied together after emergence of the fruit.

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According to the method according to the invention can also Components a) and b) another herbicide can be used. So the further herbicide can be used before planting a fruit,

a) after your planting, but before the fruit emerges and

b) to be used after the fruit has emerged.

On the other hand, a composition which is a mixture of a) and b) and the further herbicide can be used. The weight ratio of a) to the further herbicide is usually 1:10 to 10: 1, preferably 1: 3 to 3: 1. According to a particular embodiment, b) is used as a mixture with pheumedipham, for example in a ratio of b) to phenmedipham of 1: 3 to 3: 1, for example 1: 1 by weight. Examples of such further herbicides are: phenoxyaliphatic acids (e.g. 2, UD, MCPA, 2, 4,5-T, 2, H-DB, MCPB and CMPP) including functional derivatives thereof, substituted ureas (e.g. monuron, diuron, neburon, monolinuron , Linuron, Fenuron and Benzthiazuron), Triazines (e.g. Simazine, Atrazine, Trietazine and Prometryn), DNOC, PCP, Ioxynil, Bromoxynil, Dichlorbenil, Diquat, Paraquat, 2,3,6-Trichlorobenzoic acid, Endothal, Dalapon, Dicamba, TCA, Chlorpropham, Barban, EPTC, Butylat, Diallat, Allidochlor, Propachlor, Bromacil, Lenacil, Maleinhydtszid, SaIza of methanarsonic acid, Cacodylic acid, Aminotriazole, Picloram, Trifluranil, S, S, S-Tributylphosphortrithioat propylidene) -6-ethyl-2H-pyran-2,4 (3H) -dione, phenmedipham, azolamide,

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Triallat, CycToat, Propamid, Carbetamid, Diphenamid, Pebullat, Benfluralin, Metobromuron, Pyrazone, N- (chloroacetyl) -N- (2,6-diethylphenyD-glycine ethyl ester or N- (Phosphonoraeihyl) -glycine, in particular Phenmediphani, Lenacil, Pyrazon, Dalapon, TCA or cycloate. Preferred compositions contain

a) and b) optionally with Phenmedipham, Lenacil, Pyrazone or Dalapon.

Preferred examples of the use of other herbicides are as follows:

1. Cycloat is used before planting a fruit, a) after planting, but before emergence and b) after emergence upset j

2. a) is planted with TCA after dom, but before the »

The emergence of a fruit and b), optionally with phenmedipham or fyrazone, applied after the emergence of the fruit;

3) Cycloat is used before planting a fruit and a) and

b) together after planting, but before emergence of the Fruit applied,

4) Cycloate with a) is in front of the plants and b) optionally with a) applied after the fruit has emerged.

Fertilizers or pesticides other than herbicides can also be used with the presently employed substantially herbicides.

Plants, the soil, land or water surfaces can be treated with the method according to the invention. The method according to the invention and the combination according to the invention

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g are preferably used for the selective inoculation of

grow j "to _a qtellen where crop, in particular weeds used at locations such as red Ruben (Beta vulgaris) and sugar beet in particular ,, (Beta vulgaris) or, less preferably, grow

should.

In the method according to the invention, customary

η c; hit; U kiss. in particular 0.2 to 8 kg, preferably 0.5 bib H kg, 1 to H kg, in total applied to a) and b) per hectare.

The following examples are presented to the present Explain the invention in more detail without, however, being restricted thereto.

B e i s ρ i e 1 e 1 to 4: In field trials, parcels were with sugar beet, which is in sandy loam with a content of organic material of 3.3% were planted, U6 days after planting subjected to the comparative post-emergence treatments shown in the following table, wherein the herbicides were applied as aqueous sprays in a standard manner; the mixtures of herbicides were made through Mixing formulations of each of the active E components Received in a container of water just before spraying. The table shows how to fight Polygonum pensylvanicum, which in the field crops to an extent of 0.0 (no control) to 10.0 (complete control), was reached, the test being carried out 9 days after treatment.

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Component a) is 2-ethoxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl methanesulfonate and component b) 3-ethoxycarbonylaminophenyl-N-phenylcarbamate.

Tabel

Control of Polygonum pensylvanicum

example treatment Amount kg / ha 1 a)
+ b) 2.2
0.8 2 a)
+ b) 2.2
1.1 3 a) 2.2 a) 3, U

8.0 9.3

3.3 3.7

B ei S ρ i e 1 e 5 to 8: In field trials were Parcels of sugar beet planted in sandy loam with an organic matter content of 2.1%, after emergence in the standard manner 31 days after planting with aqueous sprays of the in the following Table indicated herbicides sprayed; The mixtures of herbicides were made by mixing formulations receive each of the active ingredients in a container with water just before spraying. The table shows the control of Chenopodium album, which was found in crops to an extent of 0.0 (no control) to 10.0 (complete control) achieved wvde, the test being carried out 22 days after treatment. The components a) and b) were the same as in Examples 1 to M.

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Tabel

Example treatment amount kg / ha Control of Chenopodium

album

5 a)
i y b) 6th a) y b) 7th a) 8th a)

III ¹⁰ '°

■? '? 10.0

2.2 8.3

3, U 9.3

Be i s ρ ie le 9 and 10: During a post-emergence attempt

ι the plants indicated in the table below were j

Standardly with aqueous spray solutions of the specified>

Sprayed herbicides, the mixture of herbicides i

by mixing formulations of each of the active ingredients with water immediately before spraying. The table shows the herbicidal effectiveness on the basis of a scale from 0 (no effect) to 100 (complete destruction). Components a) and b) were the same as in Examples 1 to H.

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Example 11: In field trials, parcels of sandy loam with an organic material content of 3.3 % were treated by adding 4.1 kg / hectare of cycloate (S-ethyl-N-ethyl-cyclohexylthiol carbamate) to them, whereupon the same Day sugar beets were planted. 46 days later (after the beets had emerged) the plots were similarly raised 2.2 kg per hectare of 2-ethoxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl methanesulfonate and 0.8 kg per hectare Treated hectares of 3-ethoxycarbonylaminophenyl-N-phenylcarbamate co-applied with 9.4 liters per hectare of the non-phytotoxic oil Sun Oil HE. 9 days later, the control of Polygonum pensylvanicum was tested using a scale from 0.0 (no control) to 10.0 (complete control); a fight of 10 was found.

The herbicides became more aqueous in a standard manner Spray solutions were applied and the mixture of the herbicides and the oil was made by mixing formulations of each of the herbicides. get with the oil and water immediately before spraying.

Example 12: In experiments analogous to that described in Example 11, the plots were by adding 4.5 kg per hectare of cycloate treated, after which sugar beets were planted on the same day. The parcels were then on same day with 2.2 kg per hectare of 2-ethoxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl-methanesulfonate sprayed. 46 days later,

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When the sugar beets had emerged, the plots were filled with 0.8 kg per hectare of 3-ethoxycarbonylaminophenyl-N-phenylcarbam.it sprayed. 9 days later, the control of Polygonurn pensylvanicurn on the basis of a scale of 0.0 (none Control) up to 10.0 (complete control). A control of 10.0 was determined.

In each case the herbicides were supplied in the standard manner in the form of aqueous spray solutions upset.

Examples 13 to 18: In field trials, parcels with sugar beets were found in a sandy loam soil with an organic material content of 2.1% were planted after planting, but on the same day ds Planting, with 2.2 kg per hectare of 2-ethoxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl-methanesulfonate and 6.7 kg per hectare of trichloroacetic acid sprayed in the form of the sodium salt. The herbicides were standardized in the form of a Aqueous spray solution prepared by mixing the formulations of each of these with water in a container immediately before spraying, 31 days later after the beets emerged, the Materials shown in the table below in a series of experiments in the specified amounts in a standard manner applied in the form of aqueous spray solutions. If a mixture of herbicides is given, their formulations have been used mixed with water in a container just before spraying.

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245154

Component b) is 3-ethoxycarbonylaminophenyl N-phenyl carbamate; the oil is the non-phytotoxic oil Sun Oil HE;

Pyrazone is 5-amino-i4-chloro-2-phenyl-3-pyridazoni

Endothall is 7-oxabicyclo- (2, 2, l) -heptane-2,3-dicarboxylic acid dipotassium salt and

Phenmedipham is 3-methoxycarbonylaminophenyl N- (3-methylphenyl) carbamate.

Tabel
Post-emergence treatment

example Material / quantity 13th b) 0.8 kg per hectare ι * b) 0.56 kg per hectare oil 9.4 1 per hectare 15th Pyrazone 2.2 kg per hectare b) 0.8 kg per hectare oil 9.4 1 per hectare 16 b) 0.8 kg per hectare Endothall 0.56 kg per hectare 17th b) 0.8 kg per hectare

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- 16 table (continued)

example Material / quantity 18th
• Endothall 0.56 kg per hectare
ι
οί 9.4 1 per hectare
Phenmedipham 0.56 kg per hectare
b) 0.56 kg per hectare

The control of goosefoot, which was achieved on the fruits, was measured on a scale 22 days later tested from 0.0 (no control) to 30.0 (complete control). In each example there was a fight against 10.0 found.

Example e. 19 to 2Ί: It was as in the examples 13 to 18 except that the pre-emergence treatment with 3.1 kg per hectare of 2-ethoxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl-methanesulfonate and 6.7 kg per hectare of trichloroacetic acid was carried out; the post-emergence treatments were with the materials and amounts shown in the following table.

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example Material / quantity 19th b) 0.8 kg per hectare 20th b) 0.56 kg per hectare Oil 9.4 1 per hectare 21 Pyrazone 2.2 kg per hectare b) 0.8 kg per hectare oil 9.4 1 per hectare 22nd b) 0.8 kg per hectare Endothall 0.56 kg per hectare 23 b) 0.8 kg per hectare Endothall 0.56 kg per hectare oil 9.4 1 per hectare 24 Phenmedipham 0.5 6 kg per hectare b) 0.56 kg per hectare

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7 \

Again, a control of 10.0 was found in each example.

Examples 2E- and 26: In field trials were Sandy loam plots with an organic matter content of 2.1% by adding 3.3 kg per hectare Cycloate (S-ethyl-N-ethyl-M-cyclohexylthiocarbamate) treated, whereupon the sugar beets were planted on the same day. After the plants, however on the same day, some became Parcels with 2.2 kg per hectare of 2-ethoxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl-methanesulphonate, 0.8 kg per hectare of 3-ethoxycarbonylaminophenyl-H-phenylcarbamate and 9.4 1 per Hectares of the non-phytotoxic oil Sun Oil HE treated, while the other plots were only treated with 2.2 kg per hectare 2-ethoxy-2,3-dihydro-3,3-dimethyl-benzofuran-5-yl-methanesulfonate were treated. 31 days later after the beets emerged, these other plots were only 0.8 kg per hectare Treated 3-ethoxycarbonylaminophenyl-N-phenylcarbamate. 22 days later, both types of plots were tested for goosefoot control on a scale of 0.0 (no control) up to 10.0 (complete control) examined. A control of 10.0 was found for each species.

The herbicides were applied in a standard manner in the form of aqueous spray solutions and the mixture of the Herbicides and the oil was made by mixing formulations Prepare each of the herbicides with the oil and water immediately. dam spraying received.

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Claims (5)

- 19 - (U- claims: 1. Procedures for controlling weeds in places which are or may be affected by this, characterized in that on the relevant point a) 2-Ethoxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl methanesulfonate and b) 3-ethoxycarbonylaminophenyl-N-phenylcarbamate and / or 3-methoxycarbonylaminophenyl N- (3,5-dimethylphenyl) carbamate be applied. 2. The method according to claim 1, characterized in that crops grow or at the point in question should grow. 3. The method according to claim 2, characterized in that that the components a) and b) are applied separately. U. Method according to claim 3, characterized in that that component b) after emergence of the crops is applied. 5. The method according to claim "4, characterized in that that component a) after planting, but before Emergence of the crops is applied. 6. The method according to claim 2, characterized in that that a composition comprising a mixture of components a) and b) is applied. 509819/1106 feO 7. Veria-iran according to claim ß _s church, characterized in that the composition is applied after the emergence of the Feliäcrttohte. 8. The method according to one of the address 2 bij 7 _S, characterized in that the Feldfrüchtc are sugar beets. 9. The method according to any one of the preceding claims, characterized in that the weight ratio of a) to b) is 1:10 to ϋθ: 1. ([&. Herbicidal composition, characterized in that it a) 2-Ethoxy-2,3-dihydro-3,3-diniethylbenzofuran-5-yl methanesulfcnate and b) a-ethoxycarbonylaminophonyl-H-phenylearbamate and / or Contains i-methoxycarbonylaminophenyl-N- C 3 _e 5-dimethylphenyl) -earbainate. 11. Composition according to claim 10, characterized in that the weight ratio of n) to b) is 1:10 to 10: 1. 5 09819/1106