SI9400304A - Herbicide composition,activity-promoting agent for improving the efficacy of the herbicide, and a method for treating cultivated plants. - Google Patents

Abstract

A herbicide composition comprising one or more active ingredients, known per se, such as benzofuran, bipyridine, hydroxybenzonitrile, carbamoyl phenyl carbamate, pyridazine, quinoline, sulphonyl urea or triazine herbicide, and one or more activity-promoting agents for improving the efficacy of the active ingredient/ingredients. According to the invention, the herbicide comprises at least one activity-promoting agent which is tetraalkoxylated alkyl diamine with general formula (I) in which R1, R2, R3 and R<4> are groups which, independent of each other, conform to formula (II), in which one of groups A and B is hydrogen and the other a lower alkyl group, and p+q = 5-150, and n = 1-6, whereby the molecular weight of the compound according to formula (I) is in the range of about 1 000-40 000.

Description

A herbicidal composition, an activity enhancer for improving herbicide efficiency and a process for cultivating cultivated plants

The present invention relates to a herbicidal composition containing at least one or more active ingredients known per se, such as e.g. bipyridine, hydroxybenzonitrile, carbamoyl phenyl carbamate, pyridazine, quinoline, sulfonyl urea or triazine herbicide, and one or more activity enhancing agents for improving the active ingredient / ingredient performance. The present invention further relates to a process for cultivating plantations, such as e.g. beet plantations, etc. using a herbicide, and to an activity-enhancing agent for increasing the potency of the active ingredient of the herbicide, such as e.g. benzofuran, bipyridine, hydroxybenzonitrile, carbamoyl phenyl carbamate, pyridazine, quinoline, sulfonyl urea or triazine active ingredients.

The effectiveness of herbicides applied to the leaves can be improved with surfactant additives that reduce the surface tension of the herbicides, thereby allowing the spray droplets to spread on the leaf surfaces, thereby increasing the contact surface between the herbicide and the leaf surface. Due to their ability to dissolve wax, lipophilic surfactants can also be used to provide more effective penetration of herbicides. Hydrophilic surfactants can be used to enhance translocation within plants.

Usually water-insoluble active ingredients are formulated into emulsion concentrates and active ingredients insoluble in organic solvents into wettable powders. However, these two formulations are very unfriendly to the user due to the toxicity and flammability of the solvents and the problems that arise with the packaging of materials and storage. Wettable powders are problematic due to the formation of heavy dust.

Because of the problems described above, they have generally attempted to obtain more user-friendly suspensions or granules suspended in water. However, in these, the active ingredients are in the form of solids, unlike emulsion concentrates, where they are in the form of dissolved molecules, which generally loses bioavailability because larger particles do not penetrate plants like molecules.

Due to the above, the particles of the insoluble active ingredient must be ground into powder with maximum fineness, and their penetration and translocation properties should be improved by means of activity enhancers such as e.g. oils, additives-organic solvents and / or surfactants. Particularly when using herbicides containing carbamoyl phenyl carbamate, they must add extremely large quantities of these additives in order to achieve sufficient biological efficacy.

The milling is carried out using air-jet mills and suspension mills in order to obtain active ingredients with maximum fineness, preferably sizes 1-5 / im, to provide a biological effect. Fineness is also required to provide permanent suspensions, improved storage stability of suspension concentrates and improved suspension properties for suspended granules.

English Patent Publication GB 998264 e.g. shows that ethoxylated fatty amines enhance the absorption of certain herbicides, such as e.g. paraguat and glyphosate on leaves. However, it is characterized by the disadvantage of ethoxylated fatty amines, gelling in water, thereby reducing their ability to dissolve the surface waxes of the leaf, so penetration of herbicides is not optimal. On the other hand, an increased amount of surfactants can increase the phytotoxic properties that damage the host plant. In addition, these ethoxylated fatty amines are extremely hydrophilic, thus lacking the lipophilic property, i.e. increased penetration of the herbicide through the wax layer of the leaf. Hydrophilic surfactants, e.g. fatty amines are therefore particularly suitable only as additives for hydrophilic active ingredients, such as e.g. paraguat and glyphosate.

Furthermore, it is known from European Patent Publication EP 0 257 686 that ethoxy propoxy monoamines can improve the bioavailability of herbicides. Fatty amines or fatty amido amines / imidazolines formed by this activity-enhancing agent contain at least one higher residue of 8-22C attached to one or more nitrogen atoms.

The molecular weight of the activity enhancing agent is thought to be less than 2500.

International Patent Application WO 91/13546 further teaches how to use ethoxy propoxylated block copolymers in the form of water-soluble heat-active binders as granulating additives.

EP publication 417 896 discloses a pesticidal composition containing a water-insoluble pesticide and a surfactant. The surfactant consists of polyethoxylated poly (ethylene) amine and a polyol ester and C ₁₆ -C _22- unsaturated aliphatic acid.

The purpose of the present invention is to provide an improved herbicidal composition.

It is an object of the present invention to provide an improved activity enhancer for increasing the potency of the active ingredient of the herbicide. In order to achieve the above purposes, the herbicidal composition of the present invention is characterized in that the herbicide contains at least one activity enhancer that is tetraalkoxylated alkyl diamine. The efficiency of the activity-enhancing agent can preferably be improved in a synergistic manner with the ethoxy propoxy block copolymer. Surprisingly, tetraalkoxylated alkyl diamines of the general formula were found

in which n = 1-6, A B

R., R _o , R _q and R '= - (CiU-CH-O) - (cfk-CH-O) - H,

2 J 4 2 p 2 q p + q = 5-150, and in which one of the constituents A and B is hydrogen and the other is a methyl or ethyl group having a molecular weight of about 1000 - 40000, significantly increase the bioavailability of the previously mentioned benzofuran, bipyridine, hydroxybenzonitrile, carbamoyl phenyl carbamate, pyridazine, quinoline, sulfonyl urea and triazine weeds.

The aforementioned performance enhancers are surfactants that have been found to have the remarkable property of enhancing the bioavailability of benzofuran, bipyridine, hydroxybenzonitrile, carbamoyl phenyl carbamate, pyridazine, quinoline, sulfonyl urea and triazine herbicides, which is more common obvious as is usual with other surfactants used in herbicides. We further found that these and some other surfactants act synergistically, enhancing the bioavailability of herbicides more than expected from the sum of the effects of these surfactants.

The alkoxylated diamines of the present invention have been shown to be particularly effective in improving the efficacy of herbicides in harmful weeds, such as e.g. butterflies (Chenopodium album), dragonfly (Polygonum spp.), nondescript tribrics (Matricaria inodorum), famines (Galium spurium) and common tails (Brassica napus).

The molecular weight of the enhancing agent of the present invention is preferably 4000 - 25000, wherein the size of the molecule does not limit its effectiveness, especially on a broom.

At the same time, we have found that ethoxylated propoxylated block copolymers, whose molecular weight is about 2000 - 20000, preferably 10000 - 18000, act synergistically with tetraalkoxylated alkyl diamines on ordinary beets (Brassica napus), representing weeds with a considerable layer of wax on the surfaces of their leaves. The hydrophilicity and biological effect of these block copolymers on ordinary tails increases with the mass of the molecule. Thus, on the other hand, it is possible that due to the lipophilicity of the tetraalkoxylated alkyl diamines of the present invention, the surface wax of the leaves is dissolved and penetration is increased, and penetration / translocation is further enhanced by the hydrophilicity of the ethoxy propoxy block copolymers.

The activity enhancing agents of the present invention, i.e. tetraalkoxylated diamines and ethoxy propoxylated block copolymers, all of which increase the bioavailability of said active ingredients, can be added to the spray tank as separate mixtures in the activity enhancing tank or preferably included in the formulation alone. If a herbicide is used in liquid form, the activity-enhancing agents can be mixed with the liquid phase. When solid herbicides are used, liquid activity enhancing agents can be absorbed into the carriers, and those in solid form can be introduced directly into the herbicidal mass. Activity-enhancing agents may be in the form of separate granules in solid herbicides or may be incorporated into the same granules with the active ingredients of the herbicides.

The herbicides of the invention are, however, formulated in a conventional manner. The active ingredients are dissolved in water or organic solvents, suspended in a carrier fluid or formulated in solid form. They generally contain about 5-80% of the active ingredients. Water, oil or mixtures of oil and water are generally used as carrier liquids in suspension concentrates. Surfactants (anionic, cationic, nonionic, or ampholytic) are commonly used to provide and improve emulsivity, dispersibility, suspension stability, wettability, penetration, and translocation, and to emulsify the oil into the actual concentrate and to provide suspension / emulsion stability and stability in the final solution. . The preparations may include other additives such as e.g. water-miscible and / or water-soluble carriers and / or deflocculating agents, such as e.g. kaolin or lignin compounds, antifoaming agents (e.g. silicone based agents), thickening agents such as e.g. cellulose derivatives, antifreeze agents in aqueous suspensions such as e.g. propylene glycol, organic solvents such as kerosene and colorants. In addition, protective means may be used, e.g. formalin, especially if the preparation contains organic suspending or thickening agents. In the case of wettable granules, pellets can be used as carriers of inert inorganic (e.g. silicic acid, salts) or organic (e.g., cellulose, polyacrylates, urea) compounds to dilute the active ingredients or adsorb liquid agents.

The active ingredients of the solid form herbicidal formulations are preferably very finely ground, to a particle size of less than 10 μτη, preferably 1-3 μπι. Dry mass milling is carried out using e.g. air jet mill and grinding the suspensions using a pearl mill. The formulation of suspension concentrates is carried out in an efficient stirring reactor, and granules or pellets are prepared by known techniques, e.g. using disk granulation, spray drying, fluidized bed granulation, blending by blending using a vertical mixer or a spatula mixer, and granulating by extrusion, compression, centrifugation, a spray layer, or a spray / cooling grill.

The weight ratio of the amounts of activity enhancing agents to the amounts of active ingredients in the formulations is e.g. from 15: 1 to 1: 2, preferably from 5: 1 to 1: 1. The optimal weight ratio of alkoxylated diamine to ethoxy propoxy block copolymer in ordinary turnip spray is from 1: 2 to 1: 4. In broom sprays, however, it is more preferred to use a larger amount of alkoxylated diamine. Therefore, the mass ratio in the broom spray can preferably be in the range of 10: 1 to 1:10.

In addition to the above, other biocides and fertilizers can be mixed with the suspension concentrate, granules / pellets or final solution. Other biocides include e.g. other herbicides, such as acetamide, diphenyl ether, organophosphorus, pyridine, thiocarbamate, triazine and uracil herbicides, plant disease control agents, insecticides and growth regulators. Therefore, in order to increase the control spectrum, it is preferable to use sugar beet and the like. in particular substances such as e.g. lenacyl, metolachlor, three chlorine acetic acid, EPTC, cycloate, clopyralid, fluroxypyr, benzthiazuron, chlorpropham, fenuron, isocarbimide, profam, trifluralin, alloxydimnate, setoxidim, cyclooxidim, dialate, fluazifobapophyl butyl, triazolobenzophenyl butyl , phenoxapropethyl, kizalofopetyl, haloxyfopetoxy ethyl, and proximpham in addition to the above agents.

The present invention is described in more detail below with examples.

The biological effectiveness of the herbicides is determined in the greenhouse by pot tests. Conditions for stable temperature, humidity and illumination are maintained automatically in the greenhouse. In general, test plants include weeds that cause considerable damage in sugar beet plantations, etc. broom (Chenopodium album = C. album) and common turnip (Brassica napus = B. napus), which differ from each other in terms of the surface morphology of their leaves, thus representing different types of weeds. In the tests, we also used a one-year-old husk of Mercurialis annua (= M. annua) when testing benzofuran herbicides; the non-tangible triplet, i.e. Matricaria inodorum (= M. inodorum), which is sensitive to triazines and pyridazines; ordinary slacker, i.e. Polygonum convolvulus (= P. convolvulus) was used to test for bipyridines, hydroxybenzonitriles, and sulfonyl ureas; Galium spurium (= G. spurium) for quinoline and sulfonyl urea. The susceptibility of cultivated plants to herbicide damage is determined using beet seedlings (Beta vulgaris).

For the test, 5-8 seedlings / plant-pot and 3-5 pots in parallel are generally used. The amount of water is 200 l / ha and the application is carried out with an automatic dosing sprayer when the weeds are in the state of about two leaves. Final determination of herbicide efficacy is made 13-15 days after spraying.

In the results below, efficiency is expressed as the dry or fresh mass of the above-ground parts of weeds or cultivated plants per pot or seedling.

EXAMPLE 1

The test can be used to show that the alkoxylated diamine (molecular weight, mol.m. = 6700) of the invention is clearly more effective than the previously known ethoxylated fatty acid amines (EO 15,20 and 30).

The active ingredient suspension is prepared from 80% phenmedipham granules suspended in water. The diamine of the invention as well as the amine fatty acid compound is mixed as additives of the mixture in a tank with a suspension of the active ingredient.

Fenmedifam amount = 720 g / ha

An activity that enhances activity

1. without activity enhancement means

2. alkoxylated diamine (mol.m. = 6700)

3. Fatty acid ethoxylated amine (E0 = 15)

4. Fatty acid ethoxylated amine (E0 = 20)

5. Fatty acid ethoxylated amine (E0 = 30)

6. commercial preparation Armoblen T / 25, ethoxylated fatty acid tallow amine (E0 = 15)

Used g dry substance / crucible quantity kg / ha C. album B.napus - 2.1 2.4 1 0.6 1.6 1 1,2 2.1 1 1.3 2.0 1 1.1 2.4 1 1.3 2.0

EXAMPLE 2

In this test, different alkoxylated diamines (mol.m. = 3600, 6700, 7500, and 12000) are studied. We have found that the efficiency is improved when the molecular weight is above 3600 and some optimum is achieved if the molecular weight is about 7000. Amount of phenmedipham = 720 g / ha Spray preparation as in Example 1.

An activity that enhances activity Used quantity kg / ha g dry C. album substance / crucible B.napus 1. without a booster - 2.7 2.8 activities 2. alkoxylated diamine 1 1.3 1.9 (mol.m. = 3600) 3. Alkoxylated diamine 1 0.8 1.5 (mol.m. = 6700) 4. Alkoxylated diamine 1 0.9 1.7 (mol.m. = 7500) 5. Alkoxylated diamine 1 1.1 1.7

(mol.m. = 12000)

EXAMPLE 3

The test shows that both 1 kg / ha of alkoxylated diamine (mol.m. = 6700) and 1 kg / ha of ethoxy propoxy block copolymer (mol.m. = 4150) give a level of efficiency that cannot be improved much further. B. napus even if the dosage is doubled. Alkoxylated diamine (mol.m. = 6700) is more effective than ethoxy propoxy block copolymer (mol.m. = 4150), especially on Cehnopodium album, and on Brassica napus synergy with a mixture of 20% + 80% (alkoxylated diamine + ethoxy propoxy block copolymer). A mixture of alkoxylated diamine and ethoxy propoxy block copolymer is more effective than a suitable mixture of ethoxylated fatty acid tallow amine and ethoxy propoxy block copolymer. Alkoxylated diamine (mol.m. = 6700) is more effective than ethoxy propoxy block copolymer, especially against Chenopodium album.

Fenmedifam amount = 720 g / ha

Spray preparation as in example 1.

An activity that enhances activity Used quantity kg / ha g dry C. album substance / crucible B.napus 1. without a booster - 2.7 2.8 activities 2. alkoxylated diamine 0.2 1.5 2.4 3. Alkoxylated diamine 1.0 1.4 2.1 4. Alkoxylated diamine 2.0 0.8 2.1 5. EO-PO block copolymer 0.2 1.3 2.6 6. EO-PO block copolymer 1.0 1.4 2.1 7. EO-PO block copolymer 2.0 1.3 2.0 8. Alkoxylated diamine 0.2 1.4 1.9 EO-PO block copolymer 0.8 9. Alkoxylated diamine 0.5 1,2 2.1 EO-PO block copolymer 0.5 lO.alkoxylated diamine 0.8 1.0 2.2 EO-PO block copolymer 0.2 11.alkoxylated diamine 0.2 1.4 2.1 + E0 amine tallow fat 0.8 acids 12. EO-PO monoamine 1 1.7 2.1

EXAMPLE 4

The test shows that a mixture of alkoxylated diamine (mol.m. = 6700) and ethoxy propoxy copolymer (mol.m. = 14000) is synergistic, especially on Brassica napus. The test also shows that ethoxylated tallow fatty acid amine (EO = 15) is less effective than alkoxylated diamines.

Fenmedifam amount = 720 g / ha

Spray preparation as in example 1.

An activity that enhances activity

1. without activity enhancement means

2. alkoxylated diamine (mol.m. = 6700)

3. EO-PO block copolymer (mol.m. = 14000)

4. EO-PO block copolymer (mol.m. = 14000) 75% + alkoxylated diamine (mol.m. = 6700) 25%

5. ethoxylated amine (EO = 15)

Used g dry substance / crucible quantity kg / ha C. album B.napus - 1.6 2.2 1 0.4 1.5 1 0.6 1.0 1 0.4 0.9 1 0.8 1.7

EXAMPLE 5

The test shows that the molecular weight of ethoxy propoxy block copolymers is not significantly important for efficiency.

Fenmedifam amount = 720 g / ha

Spray preparation as in example 1.

An activity that enhances activity Used quantity kg / h a g dry matter / crucible C. album B.napus 1. without a booster - 1.9 2.4 activities 2. EO-PO block copolymer 1 0.8 1.6 (mol.m. = 6600) 3. EO-PO block copolymer 1 0.8 1.4 (mol.m. = 12500) 4. EO-PO block copolymer 1 0.8 1.5 (mol.m. = 14000) 5. EO-PO block copolymer 0.7 0.8 1,2 (mol.m. = 14000) + alkoxylated diamine 0.2 (mol.m. = 6700) + dispersant 0.1

EXAMPLE 6

The test shows that the performance enhancing granules of the 70% ethoxypropoxy block copolymer, 20% alkoxylated diamine and 10% dispersant significantly increase the activity of etofumesate and metamitron. The test also shows that activity-boosting granules have a clearly better effect than a conventional oil emulsifying additive to increase the effectiveness of a mixture in a tank called Actipron (RP) and is a commercial preparation on studied weeds (Chenopodium album, Matricaria inodorum , Mercurialis annua). However, the effective ingredient metamitron has no effect on Mercurialis annua.

Active ingredient preparation (g / ha)

Ethofumesate 70% WG 400

Metamitron 80% WG (Goltix / Bayer) 360

Ethofumesate 20% EC (Kerniron / Kemira) 400

Spray preparation as in example 1.

Preparation granules that increase the activity of kg / ha fresh weight (g / seedling) C. album M.inodorum M.annua 1. Untreated - 1,400 1,176 th most common 0.938 2. II 0.1 1,263 th most common 0.955 0.814 3. II 0.5 1,350 th most common 0.938 1,028 th most common 4. II 1.0 1,345 th most common 0.948 1,033 th most common 5. II 2.0 1,323 th most common 0.979 1,034 th most common 6. Etofumesate EC - 0.890 1,002 0,485 th most common 7. Etofumesate WG - 1,183 th most common 1,039 th most common 0,473 th most common 8. II 0.1 1,071 th most common 0.899 0.475 9. II 0.5 0.783 0.902 0.380 10. II 1.0 0,680 0.960 0,405 th most common 11. fl 2.0 0.675 0.817 0,384 th most common 12. , Metamitron - 1,286 th most common 0.357 0.917 13. II 0.1 0.898 0.334 0.916 14. II 0.5 0,468 th most common 0,178 0.982 15. It 1.0 0.382 0.256 1,016 th most common 16. II 2.0 0,478 th most common 0,157 1,962 th most common Reference Actipron d / ha) 17. . Ethofumesate WF 1.0 0.940 0.936 0,415 th most common 17. . Metamitron WG 1.0 0.865 0,429 th most common 1,000

EXAMPLE 7

The test shows that

- there is no consideration for a further increase in enhancing the effect of activity-enhancing granules if the amount used exceeds 1 kg / ha,

- Emulsifying oil incorporated into activity-enhancing granules further improves performance, especially against Chenopodium album,

- Ethoxy propoxy monoamine, as an additive of the mixture in the tank, does not increase the potency of the activity-enhancing granules on the Chenopodium album and has an antagonistic effect, reducing the potency on the Brassica napus.

The amount of phenmedipham = 720 g / ha 80% of the phenmedipham granules and the amount of activity enhancer is 1 or 2 kg / ha of activity enhancing granules.

An activity that enhances activity Used quantity kg / ha g dry C.album substance / crucible B.napus 1. Untreated - 1.9 2.4 2. EO-PO block copolymer 0.7 0.8 1,2 + alkoxylated diamine 0.2 + dispersant 0.1 3. EO-PO block copolymer 1.4 0.8 1.0 + alkoxylated diamine 0.4 + dispersant 0.2 4. EO-PO block copolymer 1,2 0.6 0.8 + alkoxylated diamine 0.4 + vegetable oil 0.36 + dispersant 0.04 5. EO-PO block copolymer 1.4 0.7 1.7 + alkoxylated diamine 0.4 + dispersant 0.2 + EO-PO monoamine 1.0

EXAMPLE 8

This test investigates the property of a three-part mixture consisting of phenmedipham (8%) + etofumesate (10%) + metamitron (20%) in combination with an activity enhancing agent of the invention. The results show that the mixture of alkoxylated diamine and ethoxy propoxy block copolymer is synergistic. The optimum mass ratio of the mixture with respect to both types of weeds (C. album and B. napus) is approximately 2: 7. The ethoxy propoxy monoamine tested is clearly less effective than a mixture of diamine and ethoxy propoxy block copolymer on both weeds.

The amounts of the active ingredients are: phenmedipham 150 g / ha, etofumesate 190 g / ha and metamitron 180 g / ha. The active ingredient pellets are suspended in water 200 l / ha and activity enhancers are added in the form of either granules or liquids.

An activity that enhances activity Used dry matter (mg / quantity sadiko) kg / ha C. album B.napus 1. Untreated - 430 390 2. without agent for poviS.akt. - 290 380 3. EO-PO block copolymer 0.9 80 240 + dispersant 0.1 4. Alkoxylated diamine 0.2 60 170 + EO-PO block copolymer 0.7 + dispersant 0.1 5. Alkoxylated diamine 0.45 40 270 + EO-PO block copolymer 0.45 + dispersant 0.1 6. EO-PO monoamine 1 170 280

EXAMPLE 9

Separate ethoxy propoxy monoamine, the additive for the mixture in the tank does not further increase the effect of granules consisting of a mixture of three portions, namely: phenmedipham (8%) + ethofumesate (10%) + metamitron (20%) supplemented with increasing granules activity, from an optimal mixture of alkoxylated diamine and ethoxy propoxy block copolymer (2: 7). In fact, we have an obvious antagonistic effect on Brassica napus.

Amounts of active ingredients:

phenmedipham 150 g / ha etofumesate 190 g / ha metamitron 380 g / ha

The active ingredient pellets were suspended in water, 200 l / ha and ethoxy propoxy monoamine in liquid form was added separately to the spray solution at 1 kg / ha.

An activity that enhances activity Used quantity kg / ha g dry C. album substance / crucible B.napus 1. Untreated - 1.9 2.4 2. Alkoxylated diamine 0.2 0.2 0.8 + EO-PO block copolymer 0.7 + dispersant 0.1 3. Alkoxylated diamine 0.2 0.2 1.3 + EO-PO block copolymer 0.7 + dispersant 0.1 + EO-PO monoamine 1.0

EXAMPLE 10

This test compares a product of the invention with three products already on the market for weed efficiency. At the same time, we compare their effects on host plants. In all cases, the active ingredients in the final solutions are in the form of particulate matter, some μτη in size, and the final product is either in the form of solid WG granules which can be suspended in water or SC suspension concentrate. The composition of the invention contains, as an agent, an activity that increases the activity of 10% alkoxylated diamine + 35% ethoxy propoxy block copolymer, corresponding to 0.1 kg diamine and 0.35 kg block copolymer per hectare.

The total amount of active ingredients in all cases is 360 g / ha and the amount of water is 200 1 / ha.

The test shows that the preparation according to the invention clearly has better efficacy than the competent products both on the broom, ie. Chenopodium album as well as ordinary tails, i.e. Brassica napus and is a damage to the host plant, which is sugar beet, i.e. Beta vulgaris insignificant with all products studied.

Preparation Active g dry matter / crucible

ingredient C. album B.napus B.vulgaris 1. Untreated g / ha 2.3 2.6 3.0 2. WG according to the present invention 360 0.4 1.4 2.9 - fenmedifam 8% - etofumesate 10% - metamitron 20% including an activity enhancing agent of the present invention 3. Commercial WG 360 0.9 1.8 2.9 Goltix Triple / Bayer - fenmedifam 6.5% - etofumashat 6.5% - metamitron 28% 4. Commercial SC 360 0.6 1.6 3.2 Betanal Trio SC / Schering - fenmedifam 5% - ethofumesate 5% - metamitron 15% 5. Commercial SC 360 1,2 2.6 2.9

Mentor Star SC / Pliiss-Stauffer

- fenmedifam 9.2%

- etofumates 9.2%

- metamitron 27.1%

EXAMPLE 11

This test compares the performance of activity-enhancing granules of the invention with that of tallow fatty acid, an activity-enhancing commercial agent (Armoblen T / 25) and an activity-enhancing oil emulsifying agent (Actipron) in various herbicides. For these herbicides we choose suitable weeds.

The activity-enhancing granules of the invention consist of 70% EO-PO block copolymer, 20% alkoxylated diamine and 10% dispersant.

The herbicides studied according to their chemical family, their active ingredients, the names of the preparations and the dosage are as follows:

Chemical family Active ingredient Preparation Dosage preparation ha Bipyridine Diquat dibromide Regi on 0.75 1 Hydroxybenzo- Bromoxynil 80% WG 0,1875 kg nitrile Pyridazine Chloridazone Pyramine FL 3,0 kg Pyridate Lentagran 2,0 kg Quinoline Kinmerac BAS 51802H 2,0 kg Sulfonyl urea Triasulfuron Logran 0.02 kg

The assay can be used to show that the activity-enhancing solid granules of the invention improve the bio-efficacy of the preparations listed in the example, at least as well as the Armoblen T / 25 control agents and Actipron, which increase the activity when the active ingredient is bromoxynil , chloridazone or triasulfuron. The activity of other active ingredients is noticeably increased by the solid granules of the invention that increase activity when compared to mixtures without an activity enhancing agent and almost as well as liquid activity enhancing agents.

The spray mixtures are prepared by mixing the preparations in the above amounts with an amount of water corresponding to 2001 / ha, and 1 kg of activity-enhancing granules, 11 Armoblen T / 25 or 11 Actipron per hectare, are added as the activity-enhancing agent.

Claims (12)

PATENT APPLICATIONS A herbicidal composition, characterized in that it contains at least - one or more active ingredients known per se, preferably benzofuran, bipyridine, hydroxylbenzonitrile, carbamoyl phenyl carbamate, pyridazine, quinoline, sulfonyl urea or triazine herbicide, and - one or more activity enhancing agents for enhancing the effectiveness of the active ingredient (s), characterized in that the activity enhancing agent is tetraalkoxylated alkyl diamine of the following general formula (I): R, - (CHJ - IT / \ 2 ^R 4 in which R _r R ₂ , R ₃ and R _{4 are} groups independently of one another according to the following formula: - (CH - CH - 0) - (CH - CH - 0) - H, r * H in which one of groups A and B is hydrogen and the other is a lower methyl group and p + q = 5-150 and n = 1-6, wherein the molecular weight of the compound of formula (I) is in the range of about 1000 - 40000. A herbicidal composition according to claim 1, characterized in that the active ingredient is methyl-3m-tolyl-carbamoyl oxyphenyl carbamate and / or ethyl-3-phenyl carbamoyl oxyphenyl carbamate and / or 2-ethoxy-2,3-dihydro-3 , 3-dimethyl benzofuran-5-ylmethane sulfonate and / or 4-amino3-methyl-6-phenyl-1,2,4-triazin-5- (4H) -one and / or 1,1'-ethylene-2, 2'-dipyridylidiibromide and / or 3,5-dibromo-4-hydroxy benzonitrile and / or 5-amino-4-chloro-2-phenylpyridazin-3- (2H) -one and / or 6-chloro-3-phenylpyridazine- 4-yl-S-octyl thiocarbonate and / or 7-chloro-3-methyl-8-quinoline carboxylic acid and / or 3- (6-methoxy-4-methyl-1,3,5-triazin-2-yl) -1- [2- (2-Chloroethoxyphenyl sulfonyl] urea. A herbicidal composition according to claim 1 or 2, further comprising an ethoxy propoxy block copolymer as a synergistic additive. A herbicidal composition according to claim 3, characterized in that the ethoxy propoxy block copolymer is in accordance with the following general formula (II): HO - [(CH ₂ -CH ₂ -O) _r - (CH ₂ -CH ₂ -O) _s )] _t - H (II) in which r and s are in particular> 5 and t has a value such that the molecular weight of the ethoxy propoxy copolymer in the range of 2000 to 20000. A herbicidal composition according to claim 4, characterized in that the weight ratio of the amount of ethoxy propoxy block copolymer to the amount of tetraalkoxylated alkyl diamine is preferably 1:10 to 10: 1. A herbicidal composition according to claim 1, characterized in that the weight ratio of the amount of the activity enhancing agent to the amount of the active ingredient is preferably 1: 5 to 10: 1. The herbicidal composition according to claim 1, further comprising other substances, such as e.g. carriers and encapsulating agents as well as additives intended for emulsifying, dispersing, suspending, freezing, stabilizing and / or foaming and / or other activity enhancing agents. A herbicidal composition according to claim 2, characterized in that it further contains other herbicides, such as e.g. acetamide, diphenyl ether, organophosphorus, pyridine, thiocarbamate, triazine and uracil herbicides. A weed-killing method, characterized in that the weeds are treated with the herbicidal composition according to any one of the preceding claims. 10. An activity enhancer for improving the efficacy of the active ingredient of the herbicide, such as e.g. benzofuran, bipiridinske, hidroksilbenzonitrilne, carbamoyl phenyl carbamate, pyridazine, quinoline, sulphonyl urea or triazine active ingredient, characterized in that the agent that increases the activity, comprising tetraalkoksiliran alkyl diamine with general formula (I) (I) in which R _p R ₂ , R ₃ and R ₄ groups which are independently of one another according to the formula: // ^B - (CH _O - CH - 0) - (CH _O - CH - 0) - H, 2 p 2 q in which one of groups A and B is hydrogen and the other is a lower alkyl group and p + q = 5 -150 and n = 1-6, wherein the molecular weight of the composition of formula (I) is in the range of about 1000 - 40000. Activity-enhancing agent according to claim 10, characterized in that it contains an ethoxy propoxy block copolymer as a synergistic additive in addition to tetraalkoxylated alkyl diamine. Activity-enhancing agent according to claim 11, characterized in that the ethoxy propoxy block copolymer is in accordance with the following general formula (II): HO - [(CH ₂ -CH ₂ -O) _r - (CH ₂ -CH ₂ -O) _s )] _t - H (II) in which r and s are in particular> 5 and t has a value such that the molecular weight of the ethoxy propoxy copolymer in the range of 2000 to 20000. 24371-IX-94-mn For Kemira Oy: PATENTO PISARNA LJUBLJANA SUMMARY A herbicidal composition, an activity enhancer for improving herbicide efficiency and a process for cultivating cultivated plants A herbicidal composition containing one or more active ingredients known per se, such as e.g. benzofuran, bipyridine, hydroxybenzonitrile, carbamoyl phenyl carbamate, pyridazine, quinoline, sulfonyl urea or triazine herbicide and one or more activity enhancing agents for improving the active ingredient / ingredient performance. According to the invention, the herbicide contains at least one activity-enhancing agent, which is tetraalkoxylated alkyl diamine.