CS270132B1 - Preserving agent for seeds and / or grains - Google Patents

Abstract

A composition for pre-sowing treatment of seeds and grains, especially corn, legumes and beets, generally containing biologically active substances, nutrients and auxiliaries during application forming a continuous film on the surface of seeds and grains, consists of 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 an alkyl with a carbon number of 1 to 8 with vinyl chloride and/or vinyl acetate with an average molecular weight of from 10,000 to 2,000,000. The dry matter content in the dispersion is 0.1 to 50 wt. These copolymers may also contain further copolymerized comonomers, such as styrene, 1,3-butadione, butyl maleate and the like. The dispersion may also contain additives of higher organic solvents, such as xylene, alkylbenzenes, n-alkanes. The agent is used in forestry. up to C.g. etc.

Description

CS 270132 81 1

The invention relates to a seed and / or grain pre-treatment composition 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 crops of agricultural cultures, it takes place early! sowing the grain, usually 10 to 20 days prior to the conventional agrochemical seeds, which, prior to sowing, is covered, in particular in the case of larger grain, by at least one layer of film which is formed by incrustation or, in the case of grains, small, by coating, relative inert and / or a physiologically active filler and a film-forming agent having adhesive properties. In addition to the hydrophobic component, the biologically active substances, the most active and the raat regulators as well as the nutrients are used. Such formulations include acetylene, dissolved in a mixture of ethanol with dichloroethane, known under the trade name Sacrust, Saline starch solution, molasses, pectin gel, methylcellulose, most of the paste with fungicides, growth promoters and nutrients. However, many of the disadvantages of these are the considerable hydrophilicity of the films formed on the seed grains prepared from said native macromolecular substances. Polyvinyl alcohol and polyacrylic acid eodinase as well as sodium carboxymethylcellulose (U.S. Pat. 2,967 376j Karsay I. and inli PCT Int. Appl. WO 8402829 (1984) / in a mixture with a surfactant, a growth regulator and microelements. Styrene-divinylbenzene copolymers as well as 2-ethylhexylacrylate / butadiene / styrene as well as polystyrene (Cs.pat. 212 328) have a higher hydrophobic effect. extra-expanded polystyrene (U.S. Pat. No. 4,460,542). However, their hydrophobic effect is. it is difficult to attack the film - binder on the surface of the grain after it has been sent! and thus it comes to germinating in the brand of the Cases and thus the uneven growth of individuals. The very good technological properties of the film formed and the physiological properties have the compositions of vinyl polymer and copolymers in organometallic solvents (Ca.A0 265 502), but the raw materials are limited. Organic solvent-soluble phenol-formaldehyde-based formulations are known, but their disadvantage is the corrosive effect and the non-uniformity of attack of the formed films by water with microorganisms on the substrate. Also known as Kunela N.T.Farage notea 24, C. 1, 30 (1971), Arabic gum is also applied in organic solvents together with a dolomite powder mixture, as well as mixtures of Carbuba wax and colionia / TakahaskiNasatoshi and inli 3ap. pat. 65-212,231 (1986)]. However, the sources of these binders are limited, but hydrophilicity is already high in the application of hard non-phytotoxic resins (U.S. Pat. No. 3,113,399). However, the drawback of their preparation is the presence of organic solvents in the aqueous emulsions of the element and organic solvents formed. The lost preference for safe handling and non-flammability. Also, the proposed "acrylic resins" are poorly characterized, the polyacrylates themselves are soft, the polyacrylic acid is moreover biologically effective, its sodium salt becomes hydrophilic and water soluble. Unsuitable for encrustations that are to be stored for a long time. In the case of "vinyl resin copolymers", the vinyl chloride / wool alcohol copolymer is too hydrophilic, unusable for long-term storage, and the "chlorinated resins" in addition to the exemplified formulation require an organic solvent to emulsify the additive. . ,. '

The closest subject matter of the present invention is a seed dressing composite in accordance with Cs. Patent No. 2,320,707, in which the water-insoluble polymer-containing copolymer made of vinyl acetate and vinyl ester or acrylate monomer is contained. on treated grains, What increases their storage complexity and prevents them from being sown before agro-technical thermal treatment. Thus, it is an object of the present invention to provide a pre-sowing treatment of seeds and / or grains, in particular, maize, leguminous plants and sugar beet containing biologically active substances, nutrients and excipients, forming a continuous film by application to the seed surface and / or grains. dlsperzie. and / or aqueous alcoholic dispersion of at least one acrylic acid copolymer and / or an acrylic acid alkyl derivative with an alkyl of from 1 to 8, vinyl chloride and / or vinyl acetate having an average molecular weight of from 10,000 to 2,000,000, a dry matter concentration of 0.1 up to 50 wt. An advantage of the surface-forming agent and the continuous film of the treated grains and seeds of the present invention is the high incrustation and seed wrapping efficiency, the controlled lifetime of the formed films on the seed grains and the very good reproducibility, the technical availability of the necessary copolymers as binders produced by and other applications. Very good productability of the properties of the composition and hence the quality of the inlayed seeds and the grain. Further, the non-flammability of the composition as well as the ingrown grain, resistance to molds and non-toxicity. High strength, toughness and adhesion of films to seeds (seeds). Long-term storage, as well as treated grain (seeds, seeds) even under temporary conditions, and even more protection against moisture, molds and rodents. Thereafter, the possibility of using inlay or reworking for simultaneous addition of dc seeds of biologically active substances, microelements, fillers and other excipients. Last but not least, health and safety at work using the above-mentioned encrustation and seed wrapping.

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 mentioned monomers and comonomers, on the basis of which the copolymers are used in the present invention, other optional blefinically unsaturated comonomers are A-methylstyrene, styrene, maleic anhydride and its alkyl and dialkyl esters, C2 to C5 alkenes, dienespyrrolides, and C5- fractions, methyl methacrylate, acrylonitrile and vinylidene chloride, as well as incorporated vinyl alcohol.

The concentration of the copolymers in the dispersions may be 0.1 to 50% by weight, but in dispersions or solutions, or soles, prior to use for encrustation or seed, in terms of film thickness, concentrations of 3 to 15% by weight are most preferred. The term "seed" also refers to plant seeds.

The seed and / or grain pretreatment composition of the present invention, as appropriate, also contains available biologically active agents, such as pesticides, in particular fungicides, bacteria, herbicides and insecticides, growth regulators, biobuild compounds and the like. In particular, surfactants, defoamers, fillers, pigments and colorants are suitable as auxiliaries.

In order to increase plant porosity, the treatment of "small" seeds is enhanced by the addition of stimulants and preservatives. Va & s The dimensions of the seeded seed allow the sowing of the final distance, thereby eliminating subsequent operations during vegetation, reducing the amount of expensive seed applied during sowing. It allows a sowing ecorse than a common agricultural term. Chemical and physical bonds of the bio-elements of the active substances with the constituent of the packaging - the film, with the addition of water in the microorganisms, ensure! their slow release without the non-safety of toxic concentrations.

Improving the aerodynamic properties of the seed makes it possible to use the aerospace sowing (Schreier J. Rastl. Production 25,515 (1979)) in the poppy - Krousky J. and ibid. 31,579 (1985) for the sugar beet-Scott D. and inii Agric. Res. 21,643 (1973)]. The issue of wrapping technique is well known (Brejcha and inii Czechoslovak Car Certificate 184 166).

Incrustation or dressing of seeds is done in one or more times, from the technical ecoromic point of view, five times, especially when copolymers are applied in low concentrations or most often, when encrusting or wrapping is used for simultaneous dosing of biologically active excipients. So napt. in the first layer, in addition to the film-making component, there is a growth stimulator, a bio-element and a fungicide, in other layers an insecticide, a filler, dyes or pigments and the like. Antifoam additives are added to suppress the control of dispersions or solutions of copolymer copolymers or soles.

When removing solvents (water, organic solvents) most frequently by drying in a stream of warm, but also cold air, flowing gases, possibly by vapor withdrawal, evacuation, etc., care must be taken not to overheat and thereby damage the seeds. When applying aqueous dispersions to seed care should be taken as soon as possible to remove the water, to dry the seeded or coated seed in order to prevent swelling.

On the surface, a copolymer film formed by a macro-surface, a pre-treated seed and a grain of at least 90% is understood. However, the " segments " of the binder copolymers CS 270132 B1 3 may be readily hydrolyzable by water treatment or at least readily swell with water, especially when the water is added in the liquid state. As a rule, however, they do not transport air humidity to grains or seeds, which can be stored for a long time without compromising quality. Further details of the seed and / or grain pre-treatment composition of the present invention, as well as other advantages of its use, are apparent from the examples. Example 1

Oryspers of ethylacrylate / vinyl chloride / acrylic acid copolymers with copolymerized 62-64% ethyl acrylate, 35% vinyl chloride and 1-2% acrylic acid and vinyl acetate / butylcrylate (75%, 25H), dry weight, m.p. of copolymers having a dry matter content of 40 to 50% of an vinyl emulsion emulsion of vinyl chloride / vinyl acetate / vinyl alcohol (35%, 12%, 53%) are diluted with water to a dry matter concentration of 3 to 10% by weight. The molecular weight of the dry copolymerethylacrylate / vinyl chloride / / acrylic acid > 1380,000 and the copolymer, vinyl acetate / butyl acrylate > 280,000. Similar for comparison, aqueous solutions or solutes of starch and shellac (commercial product Saorust) are prepared. Further, ethyl acrylate / vinyl chloride / acrylic acid copolymer solutions in ethanol and xylene. In some cases, the solutions, respectively. solos add biologically active substances. Diluted dispersions, solutions, res. the soles of said copolymers are tested for adhesion of the films formed therefrom to glassy as well as slightly rough pdrcella (after the porcelain is fired at 1300 ° C). In addition to the adhesion of the formed films, their strength, elasticity and water absorption are examined. The effects of soaking the grains into dispersions or solutions and drying the corn grain to germinate in a cold germination test is less pronounced. The TRNAVA germination cold test results are obtained using a dilute aqueous dispersion of an ethyl acrylate / vinyl chloride / / acrylic acid ternary copolymer, as well as an ethno-aqueous solution of this copolymer, for the incineration of maize seed at a rate of 2 dm 3 of dispersion or solution per 100 kg of seed, also containing a fungicide orthocide, are listed in Table 1 after 1: 1 after the surface-treated corn grain has been sown into sand / soil mixtures, and after imitation of complicated conditions, which is sown two weeks before the agro-technical term, the emergence is monitored. The seeded flasks are placed in a refrigerated box, tempered to 5 to 7 ° C for 14 days, and transferred under an illuminating ramp after gradual temperature transition. The emergence, growth and development of maize is monitored and the stand height and weight are determined after 21 days of growth.

By a well-known methodology of A.Muřín and inlt Biologia (Bratislava) 35 937 (1980) / with modification, the film coated with a copolymer or homopolymer film is deposited for 14 days in a coolbox tempered to a temperature of 5 to 7 ° C and then the gradual temperature during two days increased by 20 ° C, the germination and the length of the roots of the TA 525 hybrid are determined. copolymeric film so as to contain 400 grams and 4 grams of washed quartz sand with the same fertilization of 15 corn grains TA 525 hybrid and these are shaken for 14 days in a 5 to 7 ° C quencher; then, for 2 days after gradually increasing the temperature to 20 ° C, the vessels are transferred under the light ramp. Thus, control variant 1 is seeded with a grain stained orthocide without a film coating, after 14 days after sowing the treated surface, in the control variant 2 it is emitted simultaneously with the incremented seed. Each variant has 4 reps. The results are summarized in Table 2 and are the arithmetic mean of the values obtained. 4 CS 270132 B1 T in the case of a hybrid seed of maize used for inoculant Form of impregnating agent Dry matter concentration in the preparation Q mass Non-crushed seedlings - control, also by Ortocide DQ TAM 310 dispersion 3 99,5 etholococoxylene solution 3 90,1 1 dispersion 5; 99,5 96 ethanol-xylene solution 5 99,6 i dispersion 10 99.0 Amber dispersion 3 94.5 dispersion 5 92.5 84 dispersion 10 93.0 D2 - 7 dispersion i 3 99.5 ethanol-xylene solution 3 99.5 96 dispersion 5 99.6 dispersion 10 100 CE - 375 S dispersion 3 99.8 dispersion 5 99.8 ethanol-xylene 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 B1 5

Variants 3 and 4 are performed! with a grain-encrusted aqueous dispersion of ethylacrylate / vinyl chloride / acrylic acid copolymer at a concentration of 3 and 5% by weight, containing Ortoold at a dosage of 1.3 kg, a Teva, a variant 5, and an ethanolokoyxyl solution of (alarine) vinyl vapor / copolymer butylacrylate of 7% by weight containing Qrtocid as in variant 4. In variants 6 and 7 and a 5 k by weight of ethylacrylate / vinyl chloride / acrylic acid copolymer. aplikuji! adčasne eéte raat regulators, in variant 6 - maleic anhydride and monoethanolamine in the concentration in said dispersion! 1.10 "2 k by weight and in the variant 7 maleic anhydride at a concentration of 8.10" 3 wt. In variant 8, the grain is encrusted with the Sacruet M commercial preparation, also comprising an Ortocide in the NITOS variant 9, containing tacid ortoold and 30 mg triacontal in 1 dm 3 of the diaper. Example 2

Proceeding aa, similar to Example 1, but with the difference that it coarsens and coats the copolymers and polymers, the seeds of the spice pepper of the Karmina variety, a graded diameter of 4 mm použité used to determine germination, emergence and dry weight of the above-ground material. . I use it! these variants (results obtained summarized in Table 2): 1. copolymer 2-ethylhexylacrylate / vinyl chloride · and micronised sand as filler) 1

Table 2

Variation Approach / k / Weight dry matter. mass in container Z.V Weight of dry matternadz. mass / mg.raetlina ”1 / t Average altitude / cm / at time 14 days 21 days difference 1 90,5 100 118 13; l 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 * 01 122.7 134 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. copolymer of ethylacrylate / vinyl chloride / acid acrylic copolymer and perlite as filler). 3. Variant copolymer copolymer copolymer copolymer of ethyl acrylate / vinyl chloride / acrylic acid at a concentration of 7 wt. and a mixture of perlite and dolomite as the filler of the variant 4) dispersion and filler as in variant 3, but after drying the ethanolic acetate / butyl acrylate / butylmaleinate copolymer conjugate of conc. 14 wt. and dried (5) variant diaperium (15 wt.%). copolymer of ethyl acrylate / wooll chloride / acrylic acid and perlite as filler). 6th variant) only a micronized filler filler and gypsum and water) 7th variant) dispersion with a concentration of 15k by weight. ethyl acrylate / vinyl chloride / acid acrylic copolymer, perlite as filler and additive 2 wt. Mineral fertilizer (Hármavit) and the 8th variant (control) - non-crust oa) 9th variant) aqueous emulsion of "acrylic resin" prepared by dissolving 20 wt. polyethylene acrylate in ethyl acetate and then with 1 wt. dodecyl polyglycol as a nonionic surfactant 6 CS 270132 B1 emulsified in water with ethyl acetate. The concentration of polyethylene acrylate (dry matter) in this emulsion is 7% by weight. 10.variant: vinyl chloride / vinylacetate / vinyl alcohol copolymer (ratio 35: 12: 53 in mol%) prepared by alkaline saponification of vinyl chloride / vinyl acetate copolymer, co-operating with ethylene oxide block copolymer with propylene oxide as a nonionic surfactant and vigorously stirring to form an emulsion in water 7 wt. dry matter.

The results obtained are summarized in Table 3.

Some samples of incremented seed are examined for flammability in a flame of a 3.5 cm flame of a paraffin candle in which the sample is exposed for 3 seconds. Impregnated seed according to 1 variant begins to smell, but samples of variants 3, 5 and 7 are kept similar The seed samples of varieties 6, 8, 9 and 10 were examined and burned for 10 min, samples 6, 8 and 9 are burned.

Table 3

Variant Germination 'sť Rise' / * / Density of dry matter groundfloor 14 days dirt /% / dry weight of ground mass on 28 days germination /% / 1 85,0 96,5 110,0 109,8 2 83,7 93,0 103,110 , 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 ethyl acrylate / vinyl chloride / acrylic acid copolymer with a solids content of 44% by weight. after dilution with water and ethanol, the following pour points are: dispersion ratio i: water = 1: 3, pour point = 0 ° C; wt. dispersion ratio i = water = 1: 7, freezing point = 0 ° C wt. dispersion ratio: water: ethanol = 1: 1, 1: 2, pour point = wt. water: ethanol ratio = 1! 1.5: 1.5 = - 25 ° C wt. dispersion ratio: water: ethanol = 1: 2: 1 = -12 + 1 ° C wt. dispersion ratio: water: ethanol = 1: 2.5: 0.5 = -8 + 1 ° C. Example 3.

The procedure is similar to that of Example 1, except that aqueous-ethanolic dispersions are used instead of aqueous dispersions of ethyl acrylate / vinylchloride / acrylic acid and vinyl acetate / butyl acrylate / vinyl chloride / 2-ethylhexyl acrylate copolymers (65%, 35%). to prevent freezing when stored in a cool place. Example 4

The procedure is similar to that of Examples 1 and 2, only to prevent foaming with diluted dispersions and solutions, respectively. The homopolymers and copolymers of the seed in the treatment of the seed are applied to defoamers added in amounts up to 0.15% by weight, calculated on the original undiluted dispersion. Suitable antifoam agents are silicone, further mixtures of higher fatty alcohols, higher fatty acids in hydrocarbons and oligomers of the C 1 to C 4 alkenes and other commercially available types of resins. , Example 5

The procedure is similar to Example 1, using ropes and a dispersions of other ternary copolymers, a vinyl acetate / butyl acrylate / ethylene copolymer having an average mol of 102,000, vinyl chloride / 2-ethylhexyl acrylate / butadiene with a minor mole. weight 88,000, ethyl acrylate vinyl chloride / vinyl acetate / ethylene with minor mol. In general, biologically active substances and adjuvants are used for the standard formulation of the seed grain pretreatment, and samples are applied to the TA 525 hybrid, while 1, rasp. va-riant 1 is a control, hanging grain stained fungal Ortooid without film coating after 14 days from the surface treatment of the treated grain; in control variant 2, seed at the same time with encrusted seed. Each variant has 4 reps. The results obtained are the arithmetic mean of the values obtained and are summarized in Table 4. Example 6 In experiments, the effect of a commercial formulation based on Salts in chlorofluorocarbons (Sacrust) with a copolymer of vinyl chloride / ethyl acrylate / acrylic acid diluted to a concentration of 6% is compared. wt. and with 1 wt. Sodium Cumyl Phenolate (Nitrafol-K) as a soybean encrustant (Maple Arrow variety, 1987) from harvesting. The results are summarized in Table 5.

Table 5

Incrustable Number of Growth Number of Plants Soy Harvest Weight 1000 means rastlln oredzberom / m * before harvest / m? /kg.ha5-1/ seeds / g / - (Control) 3 4 <, "6 34.2 1817 163 Dry pickling 39.7 37.6 2026 167 Sacrust 40.2 42.2 2072 166 Nitrafol-κ 41, 0 43.0 2084 163 Example 7 The influence of the encrusting agent and / or binding agent on inhibition or retardation of the growth of Trichoderma harzianum (Th), which is a biofungicide against fusariosis, is monitored in laboratory conditions. sponges in 1 dm 3 of incrustation agent Called under incremented maize (hybrid CE 395 BC) conditions for 1 day of inlay Th composition per 100 kg of grain. The resulting aqueous dispersion of wool-chloride / stylacrylate / acrylic acid copolymers with a concentration of 6% by weight and the addition of said Th (Nitrafol-Aβ) fungus. The results are summarized in Table 6. It also follows that Nitrafol-A is also a minimally inhibited growth of T.h., which is a biofungicide against fusarioses, which has a positive response in production! harvest. 8 CS 270132 81

-j- • p3 p CA ** σ · CO c-c >> 31 3 3 ® p · as r ~ - rH CO o- UA ΓΊ +> • X NO O X X X CM CM CM CM X X J J J J J J J J Η J J r r r r r r r m m m m m m m m m m m m m m m m m m O '' k * »#» PN MS O · C <A 00 CA o Lf O O <d T3 í O CM CM mog rx rX rX HW 5 G> N 3 3 · · CO Ό 44 Φ R * k «O O O O O O O O O O O O O O O O O N N N N N N N N N N IT rX ΙΛ ffl 43 · * · * «% ca lacm Lf CJ CA CM rX IACM rXOCM IC CM CM O to, CM CM y 333 Φ '>»' >> '>> P' >> thi 3 3 3 Η 3 3 3 3 Ό Ό X X * X X))))))))) ca ca X X X X X X X X X X X X X X xs -P 3 PP o P • 4- 3 rX MS MS MS, 2 3 MS 3 MS Φ >> rX rX rX '>> rX rx Φ H rX 3 44 M) OOOPO Φ P g O XJ O 03 P o 3 3 3 3 Φ 3 3fX hO 3 ® 3 ♦ HO xj ♦ XJ Φ X) X rX Xi Φ rX O XX XJ Φ> í 44> to hQ o Φ PMPMP g MpMJ-CJ CXP Μ <P P O • Η <+ X P rX o O g OH O rX O rX O O rX 3 g. Stí stí Χ stí stí stí stí stí stí stí stí stí stí stí stí stí stí stí stí stí stí stí stí X X X X X X X X X '' '' '' X X X X X X X X Pg 3 CX P g 3 2> • H 3 3 SX 3 3 3 Ή 3 3 Η K rX Φ 3 3 ® * 0 3 3 Φ o xs as O 44 O 44 O 44 g 044 g ^> N CX 044 CXO 044 CX Xi x> as Γ3 Φ m 1 EX Ό 3 1 Φ rX W 3 OO · cx CX 3 Po cx o as 44 3 g 3> 44,2 co Λ Λ 1 1 C- 00 00 44 <3 3 k í ca · 3 3 3 3 3 3 3 3 3 3 o o o o o o o o o o o 1 3 M) P XJ i as 1 cx g M $ XÍrX P ΌΧ> 3> 3 P rX • rl> 3 • rl P rX P 'i> rl MS> 3 3 &amp; £> 3 MS O MS OP 3 θ '<B OP CXrX 3 Φ cx 1 | R 44 rX 43 P rX Φ >>> O oo 3 43 rX MS 43 t> CO 3 o • H 44 03 rXM) O> srX o 03 3 • H 44 44 3 rX ^ rX rX P >> 3 rX rX MJ N 03 • H 3 X! h® 3 Φ >> >> rX rX rX 44 3 3 3 P 3 1 44 · Η 3 3 >> 3> 3 CX 3 3 r rX 40 Φ rl CM 05 XJ HP HP pa 3 CS X 3 3 3 Φ 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 J

Table 6 ’

Incrustation Class 3 Growth Inhibition T.H. /% / Maize grain harvest / t.ha "l / - (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 water-alcoholic dispersion of the copolymer of ethyl acrylate / vinyl chloride / acrylic acid (variant 1) is compared with other copolymer dispersions as well as with the pickling process. The dry copolymer concentration is 10 wt. Agronal Super is used for pickling the spring barley seed of Koral variety with incrustation. The results are the mean of 8 replicates and summarized in Table 7. With the above variant 1 sa. Compare] Other Copolymer Dispersions 2t Vinyl chloride / butyl acrylate / acrylic acid copolymer with an average molecular weight of 1,540,000 | variant 3: vinyl chloride / 2-ethylhexyl acrylate / acrylic acid copolymer having an average molecular weight of 1 40,000; variant 4i is a vinyl chloride / butyl acrylate / butadiene copolymer having an average mol. the weight of 284,000 is a copolymer of ethyl acrylate / vinylaethate having an average mol. weight 880,000; variant 8i is a 2-methylhexyl acrylate / vinyl acetate copolymer having an average mol. weight 920 000variant 9i ethylacrylate / vinylaostate / ethylone o. weight of 77,000; 10-polyhexyl-2-ethylhexyl acrylate / vinyl acetate / ethylene average molecular weight of 34,000 | a dry algae variant

Taboo7

Variant Germination / V Rise / V Weight of dry matterfrom ground in container / * / Average height (cm) at time of 20 days from emergence 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? 5.5 96.0 113.6 '26.1 9 96.0 97.0 111.1 26.5 10 • 94.0 96.0 109.9 27.0 u7 93.5 95.0 100, 21.2 control

Claims (4)

EXAMPLE 9 A procedure similar to that of Examples 1 and 2 was followed except that winter wheat seed Agra was encapsulated. Moroz Novozir ΜΝ-Θ0 in a dose of 1.5 kg.t-1 seed. Variants: 1. dry-seeded seed - control 2. vinyl chloride / ethyl acrylate (68 32 average mol 990 000) 3. vinyl chloride / butyl acrylate (57%, A3 average mol - 890 000) 4. vinyl chloride / ethyl acrylate butadiene (58%, 36%, 6%; average molecular weight105,000). Table 8 Variant Grain /% / Appearance /% / Dry matter weight above ground weight in vessel /% / Average altitude / 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 98.5 100.0 119.1 24.8 OBJECT OF THE INVENTION A composition for pre-sowing seeds and / or grains, in particular seeds, maize, struggle and beet, generally containing biologically active substances, nutrients and auxiliaries, forming a continuous film by application to the surface of seeds and / or grains, characterized by in that it consists of 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 an alkyl of from 1 to 8, vinyl chloride and / or vinyl acetate with an average molecular weight of from 10,000 to 2,000 000, with a dry matter concentration of 0.1 to 50 wt. 2. A composition according to claim 1 wherein the further 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 or 2, wherein the aqueous dispersion and / or the aqueous alcoholic dispersion at a solids concentration of 0.1 to 50% by weight, preferably 3 to 20% by weight, as a copolymer. acrylic acid and / or alkyl acrylic acid comprises vinyl chloride / ethyl acrylate / acrylic acid copolymers, 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 acetate / ethylene; vinyl chloride / 2-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 / ethylene, 2-ethylhexyl acrylate vinyl acetate / ethylene, vinyl chloride / 2-ethylhexyl acrylate / butadiene, wool acetate / butyl acrylate / butyl maleate. 4. A composition according to claim 1, wherein the aqueous and / or aqueous-alcoholic dispersion comprises a low-toxic organic solvent additive, preferably xylene, in an amount of 1 to 25%.