EA019754B1 - Synergetic herbicidal composition - Google Patents

Abstract

The invention relates to preparations directed to suppress a wide range of weed (unwanted) and woody-scrub plants on grounds of non-agricultural function and in forestry. The invention is aimed at working out a novel herbicidal composition and a method for combating a wide range of weed (unwanted) and woody-scrub plants on grounds of non-agricultural function and in forestry using a composition of imazapir and sulfometuron-methyl in a solid preparative form - water disperse granules and wetting powders; expanding the spectrum of suppressing unwanted vegetation, including persistent ecologically dangerous cow-parsnip Heracleum Sosnowskyi Manden. The achieved technical result is a novel herbicidal composition exhibiting a synergetic effect combining agro-chemically active components of imazapir and sulfometuron-methyl in mole ratio 1.14-4.65:1 and a method for suppressing of unwanted vegetation on grounds of non-agricultural function by applying a synergetic herbicidal composition in an effective amount on unwanted weeds, including persistent ecologically dangerous cow-parsnip Heracleum Sosnowskyi Manden, where they grow.

Description

The present invention relates to means for suppressing a wide range of weed (unwanted) grassy and woody-shrubby vegetation on non-agricultural lands and in forestry.

State of the art

Known herbicide Gorgon, BPK (CJSC Firma August), which is a 50% water-soluble concentrate based on 350 g / l of MCPA acid and 150 g / l of picloram acid. At doses of 1.5-3.5 l / ha, depending on the level of contamination of non-agricultural land plots, the drug effectively destroys grassy and tree-shrub vegetation [1].

However, a significant drawback of this drug is that the greatest effect of the use of the herbicide is achieved at an air temperature of 18-28 ° C. In dry weather, the effect of the herbicide may worsen, because the drug penetrates weaker into the plant and moves more slowly through it due to a general decrease in the outflow of assimilants from the leaves.

Known drug Tornado, BP, containing 360 g / l of glyphosate isopropylamine salt by acid equivalent and 180 g / l of surfactant, which is used as a continuous systemic herbicide to control annual and perennial weeds, such as creeping wheatgrass, porcine, cattail, bindweed, reed, butyok [2]. The drug is a leaf herbicide and within a month completely decomposes in the soil, without preventing the secondary growth of vegetation from the seed material available in the soil. The well-known drug Tornado, BP is harmless to bees and warm-blooded animals, but is toxic to fish.

The RF patent [3] describes the potassium salt of sulfometuron-methyl, which is used as a herbicide to destroy unwanted trees and shrubs in forestry when growing pine trees and on railway tracks. The disadvantages of the commercial drug Anokr-85, VDG 750 g / kg of potassium salt of sulfometuron-methyl, produced in accordance with the aforementioned patent, include the need for annual re-processing.

The Eurasian patent [4] describes a herbicidal mixture based on imazapyr and adjuvant. The new Arsenal commercial preparation, VK, quite confidently suppresses grassy and woody shrubs in non-agricultural areas and does not require annual treatment, however, the disadvantages include high toxicity to aquatic organisms, and the herbicidal activity of the formulation can also be reduced if temperature conditions are violated during storage.

The RF patent [5] describes a broad-spectrum preparation for the destruction of all types of undesirable grassy and woody-shrubbery vegetation at various non-agricultural objects (wastelands, railroad tracks and land plots, right of way on railways, oil, gas, energy routes, control - trace border strips, power plants, airfields, highways, etc.) - Atron, VDG 750 g / kg sulfomethuron-methyl and the method of its use together with urea monoperoxyhydrate on non-agricultural land beginnings.

The disadvantages of the drug include the difficulty in preparing the working solution, as well as the impossibility of its long-term storage due to the high oxidation rate of sulfomethuronmethyl in the liquid phase of the working solution with urea monoperoxyhydrate.

The objectives of the present invention is the development of a new herbicidal composition and method for suppressing a wide range of weeds (undesirable) grassy and tree-shrub vegetation on non-agricultural lands and in forestry using the composition of imazapyr and sulfometuron-methyl in solid preparative form - water-dispersible granules (VDG) and wettable powders (SP); expanding the spectrum of suppressed undesirable vegetation, including the malicious ecologically dangerous cowhide Sosnowski (Negas1eit 5O5po \\ yakut Mapbepp.), and increasing the herbicidal activity of this composition in comparison with the well-known commercial preparations Arsenal new, VK and Ankor-85, VDG.

Disclosure of invention

The goals are achieved in that the synergistic herbicidal composition for suppressing unwanted vegetation on non-agricultural land contains a combination of the active substances imazapira and sulfomethuron-methyl in the range of optimal molar ratios of active components of 1.14-4.65: 1.

Another object of the invention is a method of suppressing unwanted vegetation on non-agricultural land by applying a synergistic herbicidal composition in an effective amount to plants to be destroyed, including the malicious, environmentally dangerous cowhide Sosnowski (Negas1eit 8O8 and OO # 1 Mapbepp.), In the places of their growth.

The herbicidal activity of the compositions of various ratios of active ingredients of the studied compounds was carried out both in the artificial climate laboratory (LIK, GNU VNIIF) and in the field conditions of the Moscow and Leningrad regions on non-agricultural land (roadsides and exclusion lines of railways and highways, sections, clearings of forest stands, power lines).

- 1 019754

The initial biological assessment of the herbicidal compositions was carried out on representatives of the most monocotyledonous (cereal) and dicotyledonous (broad-leaved) test plants in the artificial climate laboratory under the following camera operating conditions: illumination of 20 thousand lux for 16 hours, without lighting 8 hours per day, air temperature during the day 25 ° C, at night 20 ° C, relative humidity 70%, soil moisture in the vegetation vessels 60% of PV, maintained by daily irrigation by weight with demineralized water.

As test plants, we used the plants of the Siberian gingerbread (KhaiYit Dyshsit Ra1pi ex \ νί11ά.) And wheatgrass creeping (E1y1sha scapula (b.) ΝονδΕί). Test plants were grown in waxed paper cups with a diameter of 100 mm, a capacity of 600 cm ³ , filled with a mixture of sod-podzolic soil, sand and peat in a ratio of 1: 1: 1.

After careful rejection of the test plants by height and phase of development, in each vessel, 2 plants of a fruit-bearing bush and 5 plants of wheat grass creeping were left.

The test compositions and the individual constituent components thereof, as well as various active adjuvants, were immediately dissolved in a non-phytotoxic solvent (distilled water) with the addition of a surfactant. The treatment was carried out in phase 2 of the true leaves of the fruit bush and 3 leaves of the wheatgrass creeping using an experimental sprayer VNIIF (Chemistry in Agriculture, 1985, No. 7). The flow rate of the working fluid is equivalent to a production hectare rate of 250 l / ha, an average droplet size of 180 microns, a fivefold repeatability.

Herbicidal activity was evaluated 14 days after treatment in comparison with the untreated control by the difference in the fresh weight of the plants.

The synergistic effect of the studied drugs was calculated according to Colby's formula (1) (see Co1b 8.C Ca1Ci1aLid 8pegdcb aib ΛηΙαβοηίδΙίο hecropecocum oeraceae cellulose 4eb. 1967, v. 15, No. 1, p. 20-22)

where E is the synergistic effect of the composition,

E _e - the percentage of inhibition of growth of test plants in the experiment,

E _about - the expected percentage reduction in the growth of test plants in the experiment.

The expected percentage reduction in growth of test plants was calculated by the formula (2)

Е = ε + β - (ε /?) / 1ΟΟ, (2) where ε is the percentage of growth inhibition from component A (in our case, a combination of imazapyr with sulfometuron-methyl), β is the percentage of growth inhibition from component B (in our case imazapyr or sulfomethuronmethyl taken in doses identical or close to their fractional content in the combination).

The effect of different ratios of imazapyr and sulfomethuron-methyl on the level of biological activity during the treatment of vegetative plants of the cocklebur and wheat grass creeping (LIK GNU VNIIF, November-December (2008) is illustrated in Table 1.

Table 1

The molar ratio of components The dose of the active substance, g / ha (acid equivalents) The decrease in green mass of test plants,% of control Synergistic effect, + (%) imazapyr sulfomethuronomethyl The cocklebur Wheat grass creeping The cocklebur Wheat grass creeping 1-0 0.35 0 57 27 - - 0: 1 0 0.125 58 fifteen - 4.65: 1 0.35 0.125 88 78 + 9..6 +11.1 1.14: 1 0.25 0.25 73 60 + 10.1 +9.8 0.49: 1 0.15 0.35 86 52 +8.5 +7.4

As the data in table. 1, the composition of imazapyr and sulfomethuron-methyl with a molar ratio of 1.14-4.65: 1 should be considered the most optimal ratio of the studied active substances, which allows to obtain maximum biological activity in relation to the cobweed and wheat grass creeping. This composition provides maximum biological activity with a synergistic effect of + 9.6% - + 10.1% in the version with the cocklebur and +9.8% - + 11.1% - with the creeping wheatgrass.

The composition of the synergistic herbicidal composition in the form of a wettable powder or water-dispersible granules contains components in the following molar ratios:

Imazapyr 1.14-4.65 Sulfometuron methyl 1,0 Surfactants, wt.%. 10-17 Filler, wt.%. rest until one hundred

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The following are the characteristics of the surfactants and excipients used in the new synergistic herbicidal composition.

Morvet D- 425 The condensation product of the sodium salt of sulfonated naphthalene and formaldehyde is a dispersant. Lignosulfonates, powdered. A mixture of sodium salts of lignosulfonic acids. Dispersant (TU 1302810036-15-90) Neonol AF 9-12 Oxyethylated nonylphenol ΟβΗ ^ Ο ^ Η, ΟίΟχΗ, ΟΙηΗ, n = 9- 12 (TU 2483-077-5766801-98). Syntanol BV A mixture of ethoxylated fatty alcohols SpN ₂ p + 1 O (C ₂ H ₄ O) _t N, n = 10-18, w = 7-12 (TU 6-36-5744684-85-90). Betapav A Alkylcarboxybetaines (A1k-C ₈ -C ₁₂ ), TU 2482-002047062052004). White soot Fine silica 8Yu ₂ -N ₂ O (GOST 18307-78) grade 100 or 120. Aerosil Pure silicon dioxide 8Yu ₂ (GOST 14922-77). Kaolin Natural aluminosilicate Α1 ₂ 03 · 28ί0 ₂ Ή ₂ 0 with impurities of quartz, mica and spar (SAZ 1332-58-7) Ammonium sulfate Fine ammonium salt of sulfuric acid (SAZ 7783-20-2)

A synergistic herbicidal composition in the formulations of water-dispersible granules (WDG) and wettable powder (SP), which was conditionally called Atron PRO, was used in field plot experiments on non-agricultural lands in the conditions of Moscow and Leningrad regions. In the experiments we used natural weeds most common for these regions: weed perennial plants with a predominance of the following species - wormwood, tansy, meadow cornflower, clover (spp.), Dandelion, angelica, thistle, sow thistle; juvenile dicotyledonous plants with the predominance of the following species - clover (s), cowberry (Sosnowski and Siberian), lactifolia jaundice, hop-alfalfa, clobber, field yarrow, mouse peas, bumps; cereals with a predominance of the following species - long-leaved reed, soddy meadow, pike, creeping wheatgrass, bluegrass (species). Wood and shrubby vegetation of slopes of the railway track and roadsides with the predominance of the following species: birch, willow, spruce, hazel, mountain ash and buckthorn.

Various preparations of the synergistic herbicidal composition Atron PRO and standards for them were applied to vegetating plants in the form of an aqueous suspension using the experimental sprayer OD-2 of the VNIIF design (Bulletin of the Russian Agricultural Academy, 1993, No. 3). The rate of consumption of an aqueous suspension of 200 l / ha. The area of experimental plots 25-50 m ² , 4-fold repetition, the allocation of plots sequential with elements of randomization.

The soil of the experimental plots: sod-podzolic, with a humus content of 2.0-2.5%, _water pH. 5.5.

Accounting for weeds in the experimental and control plots was carried out before spraying and 30-45 days after treatment, as well as a year after application. The registration area is 0.25 m ² — three plots located diagonally in 4 replicates of each variant. The test results in the conditions of the Moscow region are presented in table. 2, 3.

The effect of the Atron PRO synergistic herbicidal composition on the suppression of the natural plant cenosis of a forest glade without tree-shrub species (Golitsyno, Moscow Region, GNU VNIIF, processing on June 20, accounting on August 20, 2009) is illustrated in Table. 2.

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table 2

Efficiency% to control suppressing the growth and development of plants, Weed group Preparative form of the composition Atron PRO Preparative form of standards Joint venture EDC Arsenal, VK Atron, VDG The dose of the composition according to the drug: Dose of the drug: 2 kg / ha 2 kg / ha 2 l / ha 0.3 kg / ha Perennial bipartite ¹ 86 92 80 77 Juvenile dicotyledons ² 88 95 84 76 Cereals ⁵ 80 84 57 48

* The prevailing species:

- meadow cornflower, clover (species), dandelion, angelica, wormwood, tansy;

- lacficolaic yelliforme, melilot (species), alfalfa, tenure, mountaineer (species), field yarot, mouse pea, bump;

- creeping wheatgrass, pike, fescue, bluegrass, reedweed.

The biological effectiveness of the synergistic herbicidal composition Atron ABOUT on grassy and woody-shrubby vegetation growing on non-agricultural land (Golitsyno, Moscow Region, processing on June 15, 2008, accounting on August 20, 2008) is illustrated in Table. 3.

Table 3

Efficiency% to control suppressing the growth and development of plants, Weed group Preparative composition At the form ron missile defense Preparative form standards Joint venture EDC Arsenal, VK Atron, VDG The dose of the composition according to the drug: Dose of the drug: 3 l / ha 3 kg / ha 3 l / ha 0.35 kg / ha Tree and shrubby ¹ 89 90 83 76 Perennial bipartite ² 93 95 84 80 Juvenile dicotyledons ³ 95 99 85 82 Cereals ¹ ' 80 85 70 53

* The prevailing species:

- spruce, willow, hazel, birch, mountain ash, buckthorn;

- meadow cornflower, Sosnowski hogweed, wormwood, cirsium, tansy, sow thistle, yarrow;

- alfalfa, clover, bedstraw, gauze, quinoa, highlanders;

- reed, bluegrass, hedgehog team, wheat grass creeping.

Duration of the phytotoxic effect of the drug Atron PRO, VDG or SP on grassy and tree-shrub vegetation growing on non-agricultural land (Golitsyno, Moscow Region, GNU VNIIF, processing June 18, 2008, accounting August 25, 2008, July 25, 2009 g.), is illustrated in the table. 4.

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Table 4

Herbicide preparation Consumption rate per ha Weed Group * Decreased clogging,% of control on the drug Software in season of application one year after application Atron missile defense, vdg 3.0 0.88 Shrub-tree Perennial dicotyledonous Perennial dicotyledonous Cereal 90 83 88 76 one hundred one hundred 86 72 Atron PRO, SP 3.0 0.88 Shrub-tree Perennial dicotyledonous Perennial dicotyledonous Cereal 85 78 85 70 one hundred 90 80 68 Arsenal, VK (standard) 3,5 0.87 Shrub-tree Perennial dicotyledonous Perennial dicotyledonous Cereal 86 75 84 70 95 81 80 56 Ankor-85, VDG 0.35 0.26 Shrub-tree Perennial dicotyledonous Perennial dicotyledonous Cereal 78 68 80 68 82 73 55 48

* Prevailing species:

- willow, birch, spruce, hazel, mountain ash, buckthorn;

- tansy, wormwood, hogweed (species), gingerbread, thistle, yarrow, mother-in-law;

- clover, bedstraw, alfalfa, gauze, quinoa, yarut, mouse peas;

- reed, hedgehog team, bluegrass, wheat grass.

As evidenced by the data presented in table. 3-5, the synergistic herbicidal composition Atron PRO in the form of water-dispersible granules in accordance with the present invention stably exceeds both Arsenal, VK and Atron, VDG, and Ankor-85 in the destruction of weeds on non-agricultural land, VDG.

Best Modes for Using the Invention

Example 1. Wettable powder.

538.4 g of imazapyr (SAB 108224-78-8), 114.4 g of Neonol AF 9-12 wetting agent (SAB 113890-11-4), 225 g of amorphous silicon dioxide grade BS-100 (GOST 18307-78) are loaded into a paddle mixer and 161.5 g of sulfometuron-methyl (SAB 74222-97-2). The resulting mixture is fed to a pin mill of the Alpine type, 30 g of Morvet Ό-425 dispersant (Akho LiOe1 1nbn51g1a1 Breaayek, 1 ps.) Are added and grinding is carried out for 30-45 minutes.

Received after grinding, a wettable powder of light gray color with a bulk density of 1.12 g / cm ³ contains imazapyr in a molar ratio with sulfometuron-methyl equal to 4.649: 1.

A working solution is prepared by dissolving 1 kg of a wettable powder of a synergistic herbicidal composition in 150 liters of water, and then using a motorized backpack sprayer Calm sprayed onto the surface of unwanted vegetation in the right-of-way road (sod-podzolic, slightly loamy soil, humus content in the top 20 cm soil layer 4, 2%), based on a dose of 150 l / ha.

Weed (unwanted) vegetation is represented by the following plants:

terrestrial reed (Ca1 atadgo8Y8 ershcheyuk b.);

soddy meadow (Peksjatrya saekryoka (b.) Veaiu.);

Ivan Chai (SyataepeguppdizShoNit (b.) Bsor.);

meadowsweet meadowsweet (Rshrepby1a i1tala (b.) Max1t.);

burdock big (Agsyit tats. 15 VetK);

the thistle is multifolia (С1Г8шт Е1еею1бе8 (b.) Н111);

forest bucket (ApShpksik 5ί1νΐ5ΐπ5 b.);

common somnolence (AedoroFnt robadgapa b.);

angelica forest (Apdensa Hooks b.);

buttercup (species) (K.apipsi1i8 §rr.);

medicinal dandelion (Tagahasit o1st1e b.);

pea fence (WUSHA keršt b.);

real bedstraw (Sa1sht escapes b.);

- 5 019754 St. John's wort pierced (Nurepsit regGoga1nt b.);

Veronica officinalis (Uegots OGISSHAPZ b.);

wild strawberry (Bgapapa ueza b.);

common bracken (P1epysht adiShpit (b.) Kyip ex Iseskep);

horsetail (Edisept aguepze b.).

The woody-shrubby vegetation is represented by the following plants: gray alder (A1piz tsiaia (b.) Mine.);

willow (8aikh spr.);

aspen (Рор1 из 1гет1а b.);

birch (Be1i1a spr.);

European mountain ash (8th biz aisirap b.) - sporadically;

European spruce (Ruea aEez (b.) Kagz1.) - singly.

The average height of woody vegetation is 1.8 m, density 12 thousand ind./ha The composition is dominated by gray alder and willow species.

The phase of development of weeds (unwanted) plants at the time of processing: herbaceous vegetation in the phases of budding and flowering; tree-shrub - in the stage of linear growth of shoots.

Accounting for the grass cover made on the day of treatment showed that the composition was dominated by perennial perennial species - ivan tea, meadowsweet, and plants from the family of umbelliferous - wood buzzard, common raptor and wood angelica. The projective cover of the soil by this group of species was 62-66% according to the experimental variants, which varied insignificantly. Of the cereals, only two perennial species were present - terrestrial reed and soddy meadow (pike), their projective cover was 18-22%. The total projective cover of the soil with grassy vegetation on the day of treatment was 82-86%.

The first accounting, carried out 30 days after the treatment, showed that the synergistic herbicidal composition provided a decrease in the projective coverage of the soil with herbs by only 22-48%. Moreover, damage to varying degrees had all the species present. However, complete extinction has not yet been observed. The most severe injuries were noted in Ivan-tea, minor - in reedweed and plants of the umbelliferous family.

60 days after treatment, the effect of the synergistic herbicidal composition on the grass cover significantly increased and amounted to 41-86%.

Final counting 90 days after treatment showed a further increase in biological effectiveness. A synergistic herbicidal composition reduced the total projective grass cover of the soil from 76 to 1-8%. Repeated restoration of grass cover due to seed generation or regrowth of species preserved after processing was not observed.

When evaluating the effectiveness of the synergistic herbicidal composition on woody shrub species, it should be noted the slow manifestation of external signs of damage on all tree species. So, 30 days after spraying, only 30-51% of the leaves dried out in willow, 25-65% in alder, 30-36% in aspen, 15-46% in birch.

60 days after spraying, the efficiency increased dramatically. The highest sensitivity to this period was shown by species of willow and gray alder - drying of leaves in these breeds exceeded 80%. Aspen and birch turned out to be more stable - leaf drying did not exceed 82%.

The third count was carried out at the end of the growing season. He showed a sharp increase in the effect of the drug on aspen and birch and a not so significant development of the effect on willow and alder. The use of a synergistic herbicidal composition resulted in the death of more than 90% of the leaves in four tree species - willow, alder, birch and aspen.

In general, the synergistic herbicidal composition showed high arboricidal activity and a wide spectrum of action - all four studied breeds were very sensitive; so, with a consumption rate of 1 kg / ha, 90-100% of the leaves died out. Spruce received only damage of varying degrees, the shoots of the current year died out. Coniferous trees die off much more slowly.

Example 2. Water-dispersible granules.

250 g of imazapyr (CA8 81510-83-0), 75 g of methyl 2 [3 (4,6-dimethylpyrimidin-2-yl) ureidosulfonyl] benzoic acid (sulfometuron-methyl) (CA8 74222-97-2) are charged into a paddle mixer ), 80 g of lignosulfonate (CA8 8061-51-6), 30 g of sodium dodecyl sulfate (CA8 151-21-3), 50 g of ammonium sulfate (CA8 7783-20-2), 10 g of corn starch (CA8 9005-25- 8), 225 g of amorphous silicon dioxide brand BS-100 (GOST 18307-78). The resulting mixture is fed into a pin mill, 30 g of Morvet S-425 dispersant (Akho No. L1 1nins1g1a1 8res1a1ez, 1ps.) Are added and grinding is carried out for 30-45 minutes. The resulting mixture is granulated on a plate granulator with the addition of water or by extrusion, and then dried to a residual moisture content of 1.0-1.5 wt.%.

The obtained water-dispersible granules of light gray color with a bulk density of 1.13 g / cm ³ contain imazapyr with sulfometuron-methyl in a molar ratio of acid equivalent of 3,791: 1.

The working solution is prepared by dissolving the water-dispersible granules of the synergistic herbicidal composition of 2 kg in 200 l of water, and then using a hand-held backpack sprayer Solo races

- 6 019754 dust on the surface of unwanted vegetation on the railway bed (a mixture of crushed stone, gravel, sand and soil) and on slopes (sandy loam soil with a humus content of 20 cm soil layer 3.5%), based on a dose of 200 l / ha.

Weed (unwanted) vegetation is represented by the following plants.

Perennial species:

Cereals:

timothy grass meadow (Ryeis rgecke b.);

team hedgehog (Оас1уПк д1отега! а b.);

meadow foxtail (A1oresigik rgakikk b.);

creeping wheatgrass (LDgorugit gerep RV);

Dicotyledonous species:

Cirsium arvense (Слгкшт агуепке (b.) 8сор.);

common yarrow (LsnShea tp1eGo1st b.);

medicinal dandelion (Tagahasit oGystak \ Ushd);

creeping buttercup (K. apipsiik gerepk b.);

meadow clover (Trgoyitis rhalidae b.);

ordinary cuff (A1c11etP1a u11dag1k b.);

large plantain (P1ap1ado tayug b.);

coltsfoot (Tikkyado GagGaga b.);

St. John's wort pierced (Nuregkish regGogasht b.);

peas fence (U1s1a kersht b.);

horse sorrel (Vitekh soiGeyik \ UP1b.);

Creeping Clover (Trigonium Creeper L.);

tansy ordinary (TayaseSht u11dage b.);

Ivan tea (Chataepepop apdic Shoyit (b.) 8 quarters.);

common wormwood (Agktsha ui1dapk b.);

meadow rank (Lalugik rga1epk1k b.);

Veronica officinalis (Uegotsa oigsshaPk b.);

burdock big (Lgsyit 1arra b.);

Disputed:

horsetail field (Es. | ikee aguepke b.);

Annual species:

ordinary colza (Vaibaea ui1adpk B.V.);

annual bluegrass (Roa appia b.);

Chamomile pharmacy (Maykapa Hesiya L.).

Tree-shrubby vegetation is absent.

The phase of development of weeds (unwanted) plants at the time of processing: grassy plants in the phase of stemming, budding and flowering.

Perennial plant species predominated in the composition of the grass cover: cereals - the hedgehog team, meadow foxtail, creeping wheatgrass (their projective cover 46 ± 12.2%) and dicotyledonous species - field creeper, medicinal dandelion, yarrow, meadow clover (42 ± projective cover 9.5%). The total projective cover of the soil by herbaceous plant species is 85 ± 16.3%.

Accounting 30 days after treatment showed that the complete death of most species of weeds was not observed. Almost all types of herbaceous weeds were in a damaged state, in none of the experimental variants (Table 6). The biological effectiveness of the synergistic herbicidal composition was in the range of 72-83%.

60 days after spraying, the efficiency increased sharply and amounted to 88-96%. At the same time, species such as the artifact of the field, yarrow, clover, big burdock, horse sorrel, Veronica officinalis and others were preserved.

The final accounting showed that the synergistic herbicidal composition in doses of 1.5 and 2.0 kg / ha provided high suppression efficiency of all major species (90-100%). Only a few specimens of the artifact field, large burdock with severe damage, have survived. In general, this experience showed that a synergistic herbicidal composition in doses of 1.5 and 2.0 l / ha provides effective, albeit rather slow, suppression of a wide range of weeds typical of the railway track.

Example 3. A comparative example of the suppression of the hogweed Sosnowski (Negas1eit 8okpoukku1 Mapbep).

Place of the experiment: the territory of the warehouse, Gatchinsky district, Leningrad region.

Characterization of the experimental plot: sod-podzolic loamy soil with a humus content in the upper 20 cm soil layer of 4.5%. Weed (undesirable) vegetation: Sosnowski hogweed (Negaskit 8okpoukku1 Mapbep) - thickets of different ages.

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Experiment time: May-September 2010. Phase of development of weed (unwanted) plants at the time of processing: seedlings of 2010 - cotyledons, 2 leaves; older specimens are sockets, 30-40 cm high. Repeat experiment: threefold. The area of the experimental plots and their distribution: the plot area is 50 m ² , the distribution within the repetition systematic. Meteorological data on the day of processing:

air temperature: + 22 ° C;

relative humidity: 75%;

wind speed: 1.5 m / s;

no precipitation for at least 24 hours after treatment.

Comparable drugs:

Atron AB, SP - 1.0 kg / ha;

Atron ABM, VDG - 1.5 kg / ha;

Atron ABM, VDG - 2.0 kg / ha;

Arsenal, VK (standard) - 2.0 l / ha;

Atron, VDG (standard) - 150 g / ha;

Control (no processing).

Method of application: spraying with the help of the Solo manual backpack sprayer.

Fluid flow rate: 200 l / ha.

Weed (unwanted) vegetation was recorded before treatment (May 15), 30 days after treatment (June 14), 63 days after treatment (July 17), 97 days after treatment (August 20, 2010).

Accounting on the day of treatment showed that the hogweed plants were in the rosette phase (with the exception of seedlings in 2010) 30-40 cm high. Their projective coverage of the soil was 75%. Hogweed shoots in an amount of at least 110 ind./m ² were in the phase of cotyledons or 2 true leaves.

30 days after the treatment, only partial death of the hogweed was observed in all experimental variants. When Atron ABM was introduced, the speed and intensity of these processes increased with an increase in the rate of consumption of the drug. So, the total projective coverage of the soil with hogweed decreased from 100% in the control to 35-76% (efficiency was 24-65%) (Table 5).

A similar pattern was observed in the variants with reference drugs. Hogweed sprouts completely died out in all variants of the experiment.

Table 5

Projective soil cover by hogweed plants,% Biological efficiency,% 14 June July 17th August 20 June 14th 17 July August 20 AtronPRO, SP 1.0 kg / ha 76 2 0 24 98 one hundred AtronPRO, VDG 1,5 kg / ha 51 0 0 49 one hundred one hundred AtronPRO, VDG 2.0 kg / ha 35 0 0 65 one hundred one hundred Arsenal, VRK 2.0 l / ha 49 2 units 51 98 99 Atron, 150 g / ha 56 3 2 44 97 98 The control one hundred one hundred one hundred - - -

The third account after 60 days showed that in variants with Atron PRO consumption rates of 1.5 and 2.0 l / ha the cow parsnip completely died out. In the variant with a consumption rate of 1.0 l / ha, the efficiency was slightly lower - 98%, the efficiency of the standard preparations was approximately at the same level (98 and 97%).

By August 20, the cow parsnip had completely (100%) died out in all cases using Atron PRO. Arsenal and Atron acted noticeably weaker, where the gradual restoration of the hogweed began. Repeated restoration of the cow parsnip was not noted in any of the options with Atron PRO.

In addition, it should be noted that in the variants with the addition of Arsenal and Atron, in addition to the cow parsnip, restoration of the big burdock (Agsyit 1arra b.), Field butyrus (Slgyit aguepke (L.) 8c.), Dried cough (Sparyayit idshokit b.), And dandelion (Tagahasit o й ша ша ша \ \ \ νί§§.). Atron Atron missile defense only began to recover at a minimum dose, a large burdock, but much less actively than in versions with reference herbicides. On plots with higher doses of Atron ABM (1.5 and 2.0 l / ha), weed regrowth was not observed until the end of the 2010 season.

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So, experience has shown that Atron missile defense is very effective against Sosnowski hogweed and significantly exceeds the reference herbicides Atron and Arsenal.

Preparative forms of the synergistic herbicidal composition in accordance with the present invention are stable during storage and transportation, when diluted with water, they form stable solutions and suspensions and retain herbicidal activity for a long time, including at high and low ambient temperatures.

Thus, the proposed synergistic herbicidal composition has high biological and economic efficiency in suppressing a wide range of weed (undesirable) grassy and tree-shrub vegetation on non-agricultural lands and in forestry.

The essential features of the invention are the synergistic effect when combining the agrochemically active components of imazapyr and sulfometuron-methyl, manifested in the range of molar ratios of 1.14-4.65: 1, and a method of suppressing undesirable vegetation on non-agricultural lands by applying a synergistic herbicidal composition in an effective amount plants to be destroyed, including the malicious ecologically dangerous hogweed Sosnowski (Negas1eit 5O5po \\ bk | Mapbepp.), in the places of their occurrence staniya.

The technical result achieved is a synergistic herbicidal composition having high biological and economic efficiency in suppressing a wide range of weed (undesirable) grassy and woody-shrubby vegetation on non-agricultural lands and in forestry.

Essential features are new, since their use in known technical solutions was not found, which characterizes the proposed technical solution in accordance with the novelty criterion.

A single set of new and common known essential features allows us to solve the problem and ensures the achievement of a technical result, which characterizes the proposed technical solution with significant differences compared with the prior art.

The new technical solution was obtained without reference and normative recommendations; it is the result of experimental work and creative contribution, which characterizes the compliance with its criterion of inventive step.

Information sources.

1. List of pesticides and agrochemicals approved for use in the Russian Federation, 2010

2. List of pesticides and agrochemicals approved for use in the Russian Federation, 2010

3. RF patent 2107683, С07И 239/42, Α01Ν 47/36, 1996.

4. Eurasian patent EA 200802057, Α01Ν 43/50, А01Р 13/00, 2007.

5. RF patent 2340180, А01М 7/00, Α01Ν 33/00, 2008.

Claims (3)

CLAIM 1. A synergistic herbicidal composition for suppressing unwanted vegetation on non-agricultural land contains a combination of active substances - imazapyr and sulfometuron-methyl in the range of optimal molar ratios of active components of 1.14-4.65: 1. 2. A method of suppressing unwanted vegetation on non-agricultural land by applying the synergistic herbicidal composition according to claim 1 in an effective amount to the plants to be destroyed in the places of their growth. 3. A method of suppressing a malicious, environmentally hazardous plant of the hogweed Sosnowski (Negaskit 5O5po \\ bk | Mapbepp.) By applying a synergistic herbicidal composition according to claim 1 to the plants to be destroyed in an effective amount. Eurasian Patent Organization, EAPO Russia, 109012, Moscow, Maly Cherkassky per., 2