CS270132B1 - Agent for seeds or cereals treatment before plantation - Google Patents

Abstract

Seed pre-treatment agent and grains, in particular seeds, maize, legumes and grafts, usually containing biologically active substances, nutrients and excipients in the application forming seeds on the surface of the seeds and grains a film consisting of an aqueous dispersion and / or a water-alcoholic dispersion of at least one a copolymer of acrylic acid and / or an alkyl derivative of acrylic acid with alkyl of carbon 8 to 8 with vinyl chloride and / or vinyl acetate with average molecular weight from 10,000 to 2,000,000. The solids content of the dispersion! from 0.1 to 50 wt. These copolymers they may still contain aisopolymer. comonomers such as styrene, 1,3-butadiene, butylmaleinate. Also, the dispersion may contain additives of other organic solvents, as xylene, alkylbenzenes, n-alkanes Οθ The device is used in poino1 forestry. to C.g, and the like. hospodárst

Description

The invention relates to a composition for the pre-sowing treatment of seeds and / or grains based on technically available homopolymers and copolymers in the form of aqueous dispersions. or aqueous-alcoholic dispersions, usually together with biologically active substances and excipients.

In order to increase the yield of agricultural crops, the grain is sown earlier, usually 10 to 20 days before the usual agrotechnical dates, which are covered before sowing, especially in the case of larger grains, with at least one layer of film formed by incrustation or small grains. dimensions by coating, by means of the relatively inert and / or physiologically active filler and film-forming substance, and by the adhesive properties. In addition to the hydrophobizing component, they are added to the preparations used! also biologically active substances, especially pesticides and plant regulators, such as nutrients. Such preparations include shellac, dissolved in a mixture of ethanol and dichloroethane, known under the trade name Sacrust, as well as starch solution, molasses, pectin gel, methylcellulose, most often together with fungicides, growth stimulants and nutrients. However, in addition to many advantages, the disadvantage is the considerable hydrophilicity of the films formed on the surface of the seed grains prepared from said natural macromolecular substances. Also suitable in this respect is polyvinyl alcohol and sodium polyacrylic acid, as well as sodium carboxymethylcellulose. 2,967,376j Karaay I. and PCT Int. Appl. WO 8402829 (1984)] in admixture with a surfactant, a growth regulator and microelements. They have a much higher hydrophobic effect! styrene-divinylbenzene copolymers, as well as ternary 2-ethylhexyl acrylate / butadiene / atyrene copolymer, as well as polystyrene (Pat. No. 212,328) and especially pre-foamed polystyrene (U.S. Pat. No. 4,460,542). However, their hydrophobic effect is again very high, it is quite difficult to attack the film - binder on the surface of the grain after dispatch and thus germination occurs at very different times and thus uneven maturation of individuals. Preparations based on vinyl polymers and copolymers in organic solvents (Ca. A0 265 502) have very good technological properties of the formed film and physiological completions. However, their raw material resources are limited. Preparations based on phenol formaldehyde resins soluble in organic solvents are known, but their disadvantage is the corrosive effect and the unevenness of the attack of the formed films by water with microorganisms in the floor. Known / Kunela N.T .: Farage notes 24. no. 1, 30 (1971)] is also the application of gum arabic in organic solvents together with a powder mixture of dolomites, as well as a mixture of carbauba wax and rosin (Takahaski Nasatoshi et al. Jap. pat. 65-212 231 (1986). However, the resources of these binders are limited and their hydrophobicity is already too high.

113 399). However, a disadvantage resulting from the process of their preparation is the presence of organic solvents in the formed aqueous emulsions of resins and organic solvents. This loses the advantage of safe handling and non-flammability. Also the proposed acrylic resins are unsatisfactorily characterized, the polyacrylates themselves are brittle, the polyacrylic acid is moreover biologically active, its anodic salt in turn hydrophilic and water-soluble. Not suitable for encrusting grain that is to be stored for a long time. In the case of vinyl resin copolymers, the vinyl chloride / vinyl alcohol copolymer is too hydrophilic, unusable for long-term storage, and chlorinated resins require, in addition to the side effect! for emulsifying an organic solvent additive. . ,. , '‘

The closest to the present invention is a seed dressing composition by application in discontinuous spots according to U.S. Pat. However, the disadvantage is the discontinuity of the film on the treated grains, which increases their storage complexity and prevents their sowing before agrotechnical terms.

Thus, the present invention relates to a composition for the pre-sowing treatment of seeds and / or grains, in particular seeds, maize, pulses and beets, generally containing both biologically active substances, nutrients and auxiliaries, forming a continuous film on the surface of seeds and / or grains. an aqueous dispersion and / or an aqueous-alcoholic dispersion of at least one copolymer of acrylic acid and / or an alkyl derivative of acrylic acid with alkylbm having a carbon number of 1 to 8, with vinyl chloride and / or vinyl acetate and an average molecular weight of 10,000 to 2,000,000. dry matter 0.1 to 50% by weight

The advantage of the composition is that it forms a continuous film on the surface of the treated grains and seeds,

CS 270132 B1 according to the invention is a high efficiency of seed incrustation and coating, controlled life of the films formed on the seed grains and their very good reproducibility, technical availability of the required copolymers as binders, produced generally and for other applications. Very good reproducibility of the properties of the composition and thus the quality of the encrusted seeds and grains. Furthermore, it does not burn the composition as well as the encrusted grain, it is resistant to molds and at the same time it is non-toxic. High strength, toughness and adhesion of films to grain (seeds). Long-term storage of both the composition and the treated grain (seeds, seeds) even under temporary conditions, and in addition its protection against moisture, fungi and rodents. Then it was possible to use encrustation or pickling ηε simultaneous addition of dc seeds of biologically active substances, microelements, fillers and other auxiliaries. Last but not least, health safety and safety when working with said seed incrustation and coating agent.

The copolymers are most often commercially available as dispersions in water or in a mixture of water and alcohol, with a dry matter content of 40 to 50% by weight, optionally in the form of a dispersible powder (suspension).

In addition to the monomers and comonomers on the basis of which the copolymers are used according to the invention, N-methylstyrene, styrene, maleic anhydride and its alkyl and dialkyl esters, C ₂ to C ₅ alkenes, pyrolysis dienes are suitable as possible further olefinically unsaturated comonomers. - as well as C ₅ -fractions, methyl methacrylate, acrylonitrile and vinylidene chloride, as well as incorporated vinyl alcohol.

The concentration of the copolymers in the dispersions can be 0.1 to 50% by weight, but in dispersions or in solutions or in salts before use for encrustation or seeds, from the point of view of film thickness requirements, concentrations in the range of 3 to 15% by weight are most suitable. The term seed is also understood to mean plant seeds.

The pre-sowing seed and / or grain treatment composition according to the invention generally also contains available biologically active substances, such as pesticides, in particular fungicides, bactericides, herbicides and insecticides, growth regulators, bioelement compounds and the like. Suitable auxiliaries are, in particular, surfactants, defoamers, fillers, pigments and dyes.

To increase the field of aeration of plants, it is suitable to treat small seeds by coating with the addition of stimulating and protective substances. Your dimensions of the coated seed allow sowing to the final distance, thus eliminating subsequent operations during the vegetation, reducing the amount of expensive seed applied during sowing. At the same time, it enables eco-sowing than the usual agrotechnical term. Chemical and physical bonds of bioelements of active substances with the components of the packaging - film, with the action of water in the soil of microorganisms, ensure their slow release without the risk of toxic concentrations. .

Improving the aerodynamic properties of the seed allows the use of aerial sowing / Schreier J .: Rastl.výroba 25, 515 (1979) j u maku - Krousky J .: ibid. Res. 21 643 (1973). The issue of packaging technology is well known (Brejcha et al.: Czechoslovak Aut. Certificate 184 166). '

The incrustation or coating of the seeds is carried out in one or more times, from a technical-economic point of view not more than five times, especially if copolymers are applied in low concentrations or most often when the incrustation or coating is used for simultaneous dosing of biologically active excipients. For example. in the first layer, in addition to the film-forming component, there is usually a growth stimulator, bioelements and fungicide, in the following layers an insecticide, filler, dyes or pigments, etc. Defoamer additives are added to suppress foaming when applying dispersions or solutions or salts of copolymers to seeds.

When removing solvents (water, organic solvents), most often by drying in a stream of hot, but also cold air, flowing gases, or by relieving vapors, evacuating, etc., care must be taken not to overheat and damage the seeds. When applying aqueous dispersions to the seed, care must be taken to remove the water as soon as possible and to dry the encrusted or coated seed so that it does not swell.

On the surface, by which is meant the macro-surface, the copolymer film formed by the pre-sown seeds and grains is at least 90% continuous. However, the binder copolymer segments

CS 270132 B1 can be easily hydrolyzed by the action of water or at least easily swell with water, especially by the action of water in the liquid state. As a rule, however, they do not transport air humidity into grain or seed, which can be stored for a long time without compromising on quality.

Further details of the seed and / or grain pre-sowing composition according to the invention, as well as further advantages of its use, are apparent from the examples.

Example 1

Dispersions of ethyl acrylate / vinyl chloride / acrylic acid copolymers with copolymerized 62 to 64% ethyl acrylate, 35% vinyl chloride and 1 to 2% acrylic acid and vinyl acetate / butyl acrylate (75%, 25 H) with a dry matter content, ie copolymers with a dry matter content of 40 to 50 % and the vinyl copolymer emulsion of vinyl chloride / vinyl acetate / vinyl alcohol (35%, 12%, 53%) is diluted with water on a dry matter concentrate of 3 to 10 wt. Molecular weight of dry matter of copolymer ethyl acrylate / vinyl chloride / acrylic acid »1 380 000 and copolymer. vinyl acetate / butyl acrylate * 280,000. Similarly for comparison, aqueous solutions or salts of starch and shellac (commercial product Saorust) were prepared. Next, ethyl acrylate / vinyl chloride / acrylic acid copolymer solutions in ethanol and xylene. In some cases, biologically active substances are added to the solutions, reaps and salts. Diluted diapers, solutions, res. The salts of said copolymers are tested for the adhesion of the films formed therefrom to glass as well as porous porcelain (after firing the porcelain at temperatures of 1300 DEG C.). The effect of soaking the grains in diapers or solutions and drying the maize grain on germination in a cold germination test is more pronounced. The results of the cold germination test of TRNAVA using a dilute aqueous dispersion of a ternary copolymer of ethyl acrylate / vinyl chloride / acrylic acid as well as ethanolic-aqueous solutions of this copolymer, on a corn seed incrustator in a quantity of 2 dm ^{3 of} diaper or a solution per 100 kg of seed, also containing fungicide Orthocides are listed in Table 1.

Go after the post! surface - treated - incrusted maize grain into a mixture of sand: soil> 1: 1 and after imitation of hard conditions, which are sown two weeks before the agrotechnical date, germination is monitored. The seeded grain containers are placed in a refrigerated box, tempered at 5 to 7 ° C for 14 days and, after a gradual temperature transition, transferred to an illumination ramp. It monitors the germination, growth and development of maize and determines the height and weight of the stand after 21 days of growth.

By a known methodology (A. Murín and Init Biólogia (Bratislava) 35, 937 (1980)) with modification, the grain covered with a film of copolymer or homopolymer is stored for 14 days in a cooling box tempered at 5 to 7 ° C and then gradually increases to 20 ° C over two days, determines aa germination and root length of hybrid hybrid TA 525..

Subsequently, experiments were performed with the grain coated with the polymer, respectively. copolymer film by sowing 15 grains of maize-hybrid TA 525 into a container containing 400 g of soil and 400 g of milled silica ball with the same fertilization and tempering for 14 days. in a cooling box at a temperature of 5 to 7 ° C and then for 2 days after gradually raising the temperature to 20 ° C, the vessels are transferred under a light ramp. Thus, the control variant 1 is sown with grain-stained Orthocide without film coating, 14 days after sowing the surface-treated grain) in the control variant 2 sown simultaneously with the incrusted seed. Each variant has 4 repetitions. The results obtained are summarized in Table 2 and are an arithmetic projection of the values obtained.

CS 270132 Bl

T a b u 1 ’k a 1

Seed hybrid! corn pou- ^; used for incrustation · Form of impregnating preparation Dry matter concentration in the preparation Qo mass /] Average germination ’ Μ 1 i i ' Average germination of unincorporated seeds - control, also stained with Orthocide w TAM 310; dispersion 3 and 99.5 ethanol- -xylene solution 3 90.1 I dispersion 5 and 99.5 96 ethanolic oxylene solution 5 and 99.6 i dispersion 10 99.0 Amber _; dispersion 3 94.5 dispersion 5 92.5 84 dispersion 10 93.0 D2 - 7 dispersion in 3 ' 99.5 ethanol-oxyxylene solution 3 99.5 96 dispersion 5 99.6 dispersion 10 100 CE - 375 S dispersion 3 99.8 dispersion, 5 99.8 ethanolic oxylene solution 5 100 94 dispersion . 10 100 CE - 375 s emulsion . 3 92.5 emulsion 5 93.0 94 emulsion 10 94.5

CS 270132 Bl

Variants 3 and 4 ea perform! the grain inkruatovaným aqueous dispersion of an ethyl acrylate / vinyl chloride / acrylic kyaelina konoentráoii of 3 and 5 wt.%, comprising Ortocid at 1.3 kg · t ^T L seed, variant 5 with an ethanolic-xylene solution (SOLAM) vinyl acetate / butyl acrylate on At a concentration of 7% by weight, containing Orthocide as in variant 4. In variants 6 and 7, in addition to dispersions of ethyl acrylate / vinyl chloride / acrylic acid copolymer with a concentration of 5% by weight, growth regulators are also applied in variant 6 - maleic anhydride and monoethanolamine. in the total concentration in said dispersion! 1.10 H wt., And in variant 7 maleic anhydride with a concentration of 8.10 ³ wt. In variant 8, the grain is encrusted with a commercial preparation Sacrust M, also containing Ortocid), in variant 9 a preparation NITOS, also containing Ortocid and 30 mg of trlacontal in 1 dm ^{3 of} dispersion.

Example 2

The procedure is similar to Example 1, but with the difference that it is coated, i.e. coated with copolymers and polymers, of Karmlna pepper seeds, graded to a diameter of 4 mm, used to determine the germination, emergence and dry weight of the aboveground mass. Variants e and apply smolder "(network results obtained summarized in Table 2): 1. The variants of koncentřáoli diaparzia · 7% by weight, a copolymer of 2-ethylhexyl acrylate / vinyl chloride · a mlkromletý plesok as filler) ¹ '.

Table2

Variant Emergence / V Dry weight above ground. mass in the container z.v Dry matter weight above mass ¹ /mg.plant ” ¹ / ₍ Average height of plants / cm / in time 14 days 21 days difference 1 ‘ 90.5 100 ' 118 13; 1 20.5 7.4 2 90.5 109.0 122 15.2 23.9 8.7 3 100 136.4 108 15.0 23.2 8.2 4 97.5 109.0 112 13, .4 21.7 8.3 5 95.0 104.5 120 16.0 22.8 6.8 6 94:, 0 ( 122.7 134 16.5 24.4 7.9 7 92.0 131.8 144 16.1 22.3 6.2 8 90.5 104.5 130 17.3 26.2 '8.9 9 92.0 104.5. 126 18.0 26.4 8.4

2. varsene dispersion at a concentration of 7% by weight, copolymer of ethyl acrylate / wool chloride / acrylic acid and perlite as filler).

3. Variant! dispersion with a 7 H w / w copolymer of ethyl acrylate / vinyl chloride / acrylic acid copolymer, and mixed with perl milled dolomite as a filler)

4th variant! dispersion and filler as in variant 3, but after drying the grain-injected ethanolic solution of copolymer vinyl acetate / butyl acrylate / butyl maleate of conc. 14 * wt. carefully dried). ..

Variant 5: dispersion with a concentration of 15% by weight, ethyl acrylate / vinyl chloride / acrylic acid copolymer and perlite as filler).

Option 6! only filler of milled ground ball and gypsum with water

Option 7! dispersion with a concentration of 15% by weight, ethyl acrylate / wool chloride / acrylic acid copolymer, perlite as a filler and additive 2% by weight, mineral fertilizer (Hermavit))

Option 8! control - uncirculated oeivo)

Variant 9: aqueous emulsion of acrylic resin, prepared by dissolving 20% by weight of polyethylacrylate in ethyl acetate and then using 1% by weight of dodecyl polyglycol as nonionic surfactant

It's

CS 270132 B1 emulsified in water with ethyl acetate. The concentration of polyethylacrylate (dry matter) in this emulsion is 7% by weight.

Variant 10: vinyl chloride / vinyl acetate / vinyl alcohol copolymer (ratio in mol% 35: 12: 53) prepared by alkaline saponification of the vinyl chloride / vinyl acetate copolymer, co-combining a block copolymer of ethylene oxide with propylene oxide as nonionic surfactants and vigorously stirring to form an emulsion in 7% water. masses, dry matter.

The results obtained are summarized in Table 3.

Some samples of the encrusted seed are examined for flammability in a flame of a paraffin candle with a flame length of 3.5 cm, in which the sample is exposed for 3 s. The impregnated seed according to variant 1 starts to smoke but does not ignite; samples of variants 3, 5 and 7 behave similarly. The examined seed samples of variants 6, 8, 9 and 10 are ignited and burn for min, 10 s, samples 6, 8 and 9 burn.

Table 3

Variant Germination AA Starting date /% / Dry matter weight of above-ground mass after 14 days from germination /% / Dry weight of above-ground mass after 28 days from germination A / 1 85.0 96.5 110.0 109.8 2 83.7 93.0 103s 2 110.7 3 82.2 95.0 104.9 112.0 4 80.7 94.5 100.8 110.5 5 83i? 7 94.0 . 102.4 109.9 6 88.7 98.0 106.0 108.7 7 88.7 98.5 108.6 111.8 8 93.7 100.0 100.0 100.0 9 83.7 92.8 99.9 99.7 10 91.7 100 105.7 108.3

Thus, a commercial aqueous dispersion of an ethyl acrylate / vinyl chloride / acrylic acid copolymer with a dry matter content of 44% by weight, after dilution with water and ethanol, has the following solidification temperatures: mass, dispersion: water ratio <1: 3, solidification temperature = 0 ° C;

mass, dispersion: water ratio = 1: 7, solidification temperature = 0 ° C mass, dispersion ratio: water, ethanol = 1: 1: 2, solidification temperature = - 25 ° C mass, dispersion ratio: water and stanol = 1 : 1.5: 1.5 = - 25 ° C wt., Dispersion: water: ethanol ratio = 1: 2: 1 = -12 + 1 ° C) wt., Dispersion: water: ethanol ratio = 1: 2.5: 0.5 = -8 + 1 ° C.

Example 3.

The procedure is similar to Example 1, except for the aqueous dispersions! aqueous-ethanolic dispersions are used in the copolymers ethyl acrylate / vinyl chloride / acrylic acid and vinyl acetate acetate / butyl acrylate and vinyl chloride / 2-ethylhexyl acrylate (65%, 35%) to prevent freezing during cold storage. .,

Example 4.

The procedure is similar to that of Examples 1 and 2, only to prevent foaming with dilute dispersions and solutions, respectively. As salts of homopolymers and copolymers in seed treatment, defoamers are applied, added in an amount of up to 0.15% by weight, calculated on the original undiluted dispersion. Suitable defoamers are silicone, further mixtures of higher fatty alcohols, higher fatty acids in hydrocarbons and oligomers of C 1 to C ₄ alkenes, and others, commercially available

CS 270132 Bl types of defoamers. ,

Example 5

A similar eco procedure was followed in Example 1, except that dispersions of other ternary copolymers were used, namely a copolymer of vinyl acetate / butyl acrylate / ethylene with an average mol. weight 102,000, vinyl chloride / 2-ethylhexyl acrylate / butadiene with an average mol. weight 88,000, ethyl acrylate vinyl chloride / vinyl acetate / ethylene with an average mol. weight 72,000 and for comparison a polyethylene acrylate emulsion, Specified! in Example 3. More biologically active substances and auxiliaries are used for the final formulation of the pre-sowing grain treatment composition. variant 1 is a control, suspended grain-stained fungicide Ortocid without film coating after 14 days of sowing the surface treated grain; in control variant 2, sown at the same time as the inoculated seed. Each variant has 4 repetitions. The results obtained are the arithmetic mean of the values obtained and are summarized in Table 4.

Example 6 '

In field experiments, the effect of a shellac-based chlorinated hydrocarbon (Sacrust) composition with a copolymer dispersion of vinyl chloride / stylacrylate / acrylic acid condensed to a concentration of 6% by weight and with the addition of 1% by weight of sodium cumyl phenolate (Nitrafol-K) as an incrusting agent was compared. (Maple Arrow variety, 1987) in terms of yield, The results obtained are summarized in Table 5.

Table 5

Incorporating agent Number of emerged plants ored by harvest / m * Number of plants Λ before collection / m Soybean harvest /kg.ha ^5-1 / Weight 1000 seeds / g / - (Control) 34 <; 6 34.2 1817 163 Dry pickling 39.7 37.6 2026 167 Sacrust 40.2 42.2 2072 166 NitrafolΛ 41.0 43.0 ' 2084 163

Example 7

Under laboratory conditions, the effect of the incrusting agent, resp. binders of an incrusting agent for inhibiting or retarding the growth of the fungus Trichodsrma harzianum (Th), which is a biofungioid against fusariosis. 300 g of this lyophilized sponge are applied in 1 dm ^{3 of} incrusting agent. Next, under normal conditions on corn maize (hybrid CE 395 BC), by treating a diluent based on a dilute aqueous dispersion of a vinyl chloride / ethyl acrylate copolymer with 1 .mu.m of an incantant with the stated Th content per 100 kg of grain. / acrylic acid with a concentration of 6% by weight, and with the addition of said fungus Th (Nltrafol -A ^). The results obtained are summarized in Table 6.

It also follows from the above that with the Nitrafol incrustation agent - the growth of the fungus Th, which is a biofungicide against fusariosis, is also minimally inhibited, which also has a positive response in production! harvest. ' ¹ θ

CS 270132 Bl

............ i T3 -p = Φ Φ Φ \ ω d ce-i ο >> §> »dl d £ Φ-Ρ · <B ΡΉΝΟ hflň o> ra ό e S ή iS 3 ΦΛ \ H Sní 117.9 CA λ 126.6 127.6 UA H 123.5 1 .........— The weight of the above-ground mass in the container / # / óot what σ »o H 128.3 129.8 130.3 5 105.3 t Maize germ /% / 1 ___________ — __ 90.4 90.9 ΙΛ Λ 00 σ \ trs VO G> CM σ \ 90.3 f --------------- ^{1 1 J} · ¹ ·· - · ' ^j ........ - Applied pre-sowing treatment for maize Contents /% by weight / ITVCM ΙΛ CM LTV * σλ CM Η trv - ΙΛ0Μ HO CM H LÍXCM CM O irx •with IACM CM biologically active and excipients Sodium cumylphenolate orthocide Sodium cumylphenolate orthocide Orthocide cumylphenolate sodium micronised dolomite Orthocide _f sodium sulphenolate mineral fertilizer (Harmácit) live pigment perlite Orthocide cumylphenolate sodium perlite defoamer Nopen® t333 Orthocide cumylphenolate sodium perlite content of copolymer in the composition /% by weight, / 1 1 1 . what 00 00 type of copolymer 1 \ 1 ----------------- vinyl acetate / butyl acrylate / ethylene —————————————— | vinyl chloride (2-ethylhexyl acrylate) butadiene vinyl chloride / vinyl acetate / ethylene polyethylene acrylate emulsion Variant CM

CS 270132 Bl

Table 6 1 An incrustation device Growth inhibition of T.H. /IN Maize grain harvest /t.hal/ - (control) - 7.9 Molasses 4.96 7.8 Saorust 4.47 8.1 Hydrocol 15.74 7.8 Nitrafol - 3.50 8.3

Example 8

·. The procedure is similar to that of Examples 1 and 2, but the above-mentioned aqueous-alcoholic dispersion of the copolymer ethyl acrylate / vinyl chloride / acrylic acid (variant 1) is compared with other copolymer dispersions as well as dry-stained seeds. The dry matter concentration of the copolymers is 10 V wt. Agronal Super is used to morenle the seeds of spring barley of the Koral variety by incrustation. The results are the average of 8 replicates and summarized in Table 7.

With said variant 1,. compare) other dispersions of copolymers variant 2: vinyl chloride / butyl acrylate / acrylic acid copolymer of average molecular weight

540,000; ......

variant 3: copolymer vinyl chloride / 2-ethylhexyl acrylate / acrylic acid with an average mol. weight 1 £ 40,000, <

variant 4t vinyl chloride / butyl lactylate / butadiene copolymer of prismsrnsj mol. weight 284,000; variant 7t ethyl acrylate / wool / acetate copolymer with an average mol. weight 880,000 ;.

variant 8i 2-ethylhexyl acrylate / wool acetate copolymer with an average mol. weight 920,000; varient 9i copolymer ethyl acrylate / vinyl acetate / stylene o. average mol. weight 77,000;

variant 10 copolymer · 2-ethylhexyl acrylate / vinyl acetate / ethylene with an average molecular weight of 34,000;

variant lliosivo dry-stained.

Table?

Variant Germination Vzčasavosl / V Mass of dry matter of above-ground matter in a container / V / The average height of raetlín (cm) in Case 20 days from the rise 1 97.0 99.0 126.6 27.9; 2 95.0 96.0 122.8 '27.6 3 94.5 96.0 120.6 24.8 4 94.0 95.0 123.2 • 27.8 7 '' '98.0 97.5 112.4 24.3 8 95.5 96.0 113.6 ' 26.1 9 96.0 ' 97.0 111.1 26.5 10 . -94.0 96.0 109.9 27.0 11; control 93.5 . 95.0 100 . 21.2

CS 270132 Bl

Example 9

The procedure is similar to that of Examples 1 and 2, except that winter wheat seeds of the Agra variety are inoculated. Novozir MN-BO mordant in a dose of 1.5 kg.t ^-1 seed.

Variants: 1. dry-pickled seed - check

2. vinyl chloride / ethyl acrylate (68%, 32%; average molecular weight 990,000)

3. vinyl chloride / butyl acrylate (57 43 average molecular weight - 890,000)

4. vinyl chloride / ethyl acrylate / butadiene (58%, 36%, 6%; average molecular weight

105 000).

Table 8

Variant Klíčivosl / V Emergence A / Mass of dry matter above ground. mass in the container /% / Average plant height / cm at 20 days after emergence 1 94.0 97.0 100 22.1 2 96.0 97.0 112.8 23.4 3 96.0 98.0 113.6 23.2 4 9B, 5 100.0 119.1 24.8

OBJECT OF THE INVENTION

Claims (4)

OBJECT OF THE INVENTION A composition for the pre-sowing treatment of seeds and / or grains, in particular seeds, maize, pulses and beets, generally containing biologically active substances, nutrients and auxiliaries, forming a continuous film by application on the surface of seeds and / or grains, characterized in that it consists of from an aqueous dispersion and / or an aqueous-alcoholic dispersion of at least one copolymer of acrylic acid and / or an alkyl derivative of acrylic acid with alkyl having a carbon number of 1 to 8, with vinyl chloride and / or vinyl acetate having an average molecular weight of 10,000 to 2,000,000, of dry matter 0.1 to 50 wt. 2. The composition of item 1, wherein the additional copolymerized comonomer in the copolymer is at least one olefinically unsaturated comonomer, such as ethylene, styrene, 1,3-butadiene and butyl maleate. ,. 3. A composition according to claim 1 and 2, characterized in that the aqueous dispersion and / or the aqueous-alcoholic dispersion with a dry matter concentration of 0.1 to 50% by weight, preferably 3 to 20% by weight, which is a copolymer of acrylic acid. and / or the alkyl derivative of acrylic acid contains copolymers vinyl chloride / ethyl acrylate / acrylic acid, vinyl chloride / butyl acrylate acrylic acid, vinyl chloride / 2-ethylhexyl acrylate / acrylic acid, vinyl chloride / ethyl acrylate, vinyl chloride / butyl acrylate, ethyl acrylate / vinyl chloride / vinyl chloride / vinylene ethylhexyl acrylate, vinyl chloride / ethyl acrylate / butadiene, vinyl chloride / butyl acrylate / butadiene, ethyl acrylate / vinyl acetate, butyl acrylate / vinyl acetate, 2-ethylhexyl acrylate / vinyl acetate, ethyl acrylate / vinyl acetate / ethylene, butyl acrylate / vinyl acetate / ethyl acetate / ethyl vinyl chloride / 2-ethylhexyl acrylate / butadiene, wool acetate / butyl acrylate / butyl maleate. 4. The composition according to items 1 to 3, characterized in that the aqueous and / or aqueous-alcoholic dispersion contains the addition of a low-toxic organic solvent, preferably xylene, in an amount of 1 to 25%.