RU2223645C1 - Insecticides sticker for pesticides - Google Patents

Abstract

FIELD: agriculture, organic chemistry. SUBSTANCE: invention relates to chemical production used in agriculture. Sticker for pesticides comprises oligomeric polyalkoxysiloxanes, non-ionogenic surface-active substance and water-soluble organic solvent. As oligomeric polyalkoxysiloxanes mixture of oligoalkoxysiloxanes of the general formula: R[-O-Si(OR)₂-O]_nR wherein R means C₂-C₃-alkyl; n = 1-10 is used. As non-ionogenic surface-active substance mixture of polyethylene glycol esters of saturated alcohols of the general formula: HO(-CH₂-CH₂-O-)_mR₁ wherein m = 2-10; R₁ is C₆-C₁₂-alkyl is used in the volume ratio polyalkoxysiloxanes to surface-active substance = 1 : (0.2-13). Sticker comprises a water-soluble solvent taken in the volume ratio to polyalkoxysiloxanes = 1 : (1-10) mainly. EFFECT: enhanced biological effectiveness of pesticides. 2 cl, 7 tbl

Description

 The invention relates to chemical products for agriculture and is intended to increase the biological effectiveness of pesticides (seed dressers, fungicides, insecticides, herbicides), as well as plant growth regulators and micronutrient fertilizers.

 Pesticides, plant growth regulators and micronutrient fertilizers are multicomponent formulations (hereinafter referred to as preparations), which contain biologically active active substances (hereinafter referred to as ag. Preparations at the place of use are mixed with water and the resulting working solution (suspension, emulsion) is treated with seeds, vegetative plants or soil.

 The excipients include various film-forming agents, encrusting agents, adhesive compositions, adhesives, which increase the adhesion of a.v. to treated seeds, plants or soil, reduce the rate of flushing with precipitation and dew. As a result, the exposure time increases. on biological objects and increases the effectiveness of drugs.

 Known film-forming composition "MiBAS", which is a product of the processing of waste pulp and paper industry containing lignin. When using 4-8 kg of the composition, it is diluted 2.5-3 times with water, the dressing agent is added and 1 ton of seeds is treated with the resulting suspension [Shavronov O.D., Krylov EA, Potapenko VN, Yagodin V.Ya. , Chumachenko I.N. The effectiveness of the film-forming compositions MiBAS. // Chemistry in Agriculture, 2-3, 1995, p. 9-13]. The main disadvantage of the composition is the high consumption.

 Known water-soluble encrusting agent for seed dressing containing 3-15% polyvinyl alcohol as a film-forming material [Copyright certificate 262480, Czechoslovakia, MKI A 01 N 25/00, publ. 07/14/89].

A method for producing a modified inlaid preparation for seed dressing based on products of alkaline hydrolysis of polyacrylonitrile is described [Patent 159474, Poland, MKI ⁶ A 01 N 25/10, publ. 12/31/92].

Known pesticidal composition containing a mixture of polyvinyl alcohol, gelatin and glycerin [Copyright certificate 1692005, USSR, MKI ⁵ A 01 N 25/24, publ. 12/15/93].

A known method of presowing treatment of vegetable seeds with an aqueous solution of a copolymer of N-vinylpyrrolidone, which is used as a preparation KATAPOL with a molecular weight of from 12,000 to 400,000 [Patent 2133568, Russia, MKI ⁶ A 01 N 25/00, 37/06, 43/36, publ. 07.27.99].

 The disadvantage of polyvinyl alcohol, polyacrylonitrile, N-vinylpyrrolidone, as well as other high molecular weight substances (carboxymethyl cellulose, starch) is the need to use hot water and continuous intensive mixing to obtain a uniform working solution of the pesticide before use.

 Organosilicon substances have low consumption and not complicated application technology.

 To extend the validity of various insecticides, it is proposed to use methylphenyl polysiloxanes or dimethyl polysiloxanes [Application 53-107418, Japan, cl. 30 F 352 (A 01 N 9/24), publ. 09/19/78], adherent preparations with organopolysoloxanes [Patent 4198441, USA, cl. 427/2 (A 61 K 31/655, A 01 N 17/08), publ. 04.15.80], adhesive preparations based on organopolysoloxanes [Patent 4200664, USA, cl. 427/4 (A 61 K 31/695), publ. 04/29/80, patent 4212897, USA, cl. 427/2 (A 61 K 31/695, A 01 N 17/08), publ. 04/15/80]. These auxiliary compositions are complex and contain a hydrolyzable titanium compound as a polymerization catalyst.

Known herbicidal compositions for post-emergence treatment containing silicone glycols. In one patent, it is proposed to use compounds of the form (Me ₃ SiO) ₂ Si (Me) (CH ₂ ) ₃ O (CH ₂ CH ₂ O) ₇ OAc and Me ₃ SiO [Si (R {OCH ₂ CH ₂ } _n OZ) ( Me) O] _x
[Patent 5145977, USA, IPC ⁵ C 07 F 7/08, publ. 09/08/92], and in the other (Me ₃ SiO) ₂ Si (Me) R (CH ₂ ) ₃ O (CH ₂ CH ₂ O) _m OZ and Me ₃ SiO [Si (Me) {R (OCH ₂ CH ₂ } ₁ OZ)}] _x SiMe ₃
[Patent 5145978, USA, IPC ⁵ C 07 F 7/08, publ. 09/08/92].

Organosilicon compounds (Me ₃ SiO) ₂ Si (Me) (CH ₂ ) ₃ O (CH ₂ CH ₂ O) ₇ Me have been proposed for treating plants with exogenous substances [Patent 5985793, USA, IPC ⁶ A 01 N 25/30), publ. . 16.1.99].

Agrochemical preparations are described, which are mixtures of polyorganosiloxane substances of the type (Me) ₃ SiO- [Si (Me) ₂ O-] _m [Si (Me) (A) O-] _n [Si (Me) (G) O-] _k Si (Me) ₃ , where A, G are alkyls, ethers [Patent 6051730, USA, MKI ⁷ C 07 F 7/10, publ. 04/18/2000].

 The disadvantage of the above organosilicon compounds is the insufficiently strong fixation of the pesticide on the treated surface.

Known composition for weed control in vineyards based on the herbicide Sangor [Copyright certificate 1662465, USSR, MKI A 01 N 25/24, publ. 07/15/1991]. In order to reduce the consumption of biologically active substances, it contains tetraethoxysilane (CH ₃ CH ₂ O) ₄ Si in the form of a 10% alcohol solution.

 To obtain a positive effect on 1 hectare, it is necessary to add 1.6-3.2 l / ha of an alcohol solution of tetraethoxysilane, which is a significant drawback of this composition.

A known composition for treating seeds containing a film former, nonionic surfactant, dye and dressing agent, in which oligomeric polyalkoxysiloxanes of the form HO - [(RO) ₂ Si O-Si (OH) (OR) -OSi (OR) are used as the film former (OR ¹ )] _n OH,
where: R = alkyl C _2-4 ; R ^{1 =} alkyl C ₂ -C ₄ - (CH ₂ CH ₂ O-) ₉ OH; n = 4-25 [Patent RU 2104620, MKI ⁶ A 01 C 1/06, publ. 02/20/98] (prototype).

 These oligomeric polyalkoxysiloxanes at the stage of preparation of the working solution of the pesticide are hydrolyzed to form gel-like polysilicic acids and their esters. The resulting gel provides a strong fixation of the pesticide on the treated surface and helps to increase its biological effectiveness.

 However, these oligomeric polyalkoxysiloxanes when stored for more than 6 months can spontaneously and irreversibly turn into a gel (gelatinous mass), which is the main disadvantage of the prototype.

 The invention solves the problem of expanding the range of excipients used in pesticide formulations, namely the development of an adhesive that maintains fluidity and the ability to firmly fix pesticides on the treated surface for at least 2 years.

The specified task in that the pesticide adhesive, including oligomeric polyalkoxysiloxanes, a nonionic surfactant and a water-soluble organic solvent, as oligomeric polyalkoxysiloxanes contains a mixture of oligoalkoxysiloxanes (hereinafter referred to as CBS) of the general formula:
R [-O-Si (OR) ₂ -O-] _n R, where R = -C ₂ H ₅ , -C ₃ H ₇ , n = 1-10 as a nonionic surfactant (hereinafter referred to as surfactant) contains a mixture polyethylene glycol ethers of fatty alcohols of the general formula:
HO (—CH ₂ —CH ₂ —O—) _m R ₁ where; R ₁ = alkyl C ₆ -C ₁₂ , m = 2-10
in the following volumetric ratio of the components of polyalkoxyloxanes: surfactant: 1: 0.2-13.

 When processing seeds, the pesticide adhesive is introduced into the composition of liquid preparations (disinfectants, plant growth regulators, micronutrient fertilizers) or added to the working solution (suspension, emulsion) of the pesticide immediately before use.

 When treating vegetative plants, an adhesive for pesticides is introduced into the composition of liquid preparations (herbicides, fungicides, insecticides, plant growth regulators), or added to the working solution (suspension, emulsion) of the preparation immediately before use.

Adhesive for pesticides was prepared by mechanical mixing of CBS, surfactant and solvent at room temperature. The obtained samples were tested for stability during storage by the accelerated method, for which they were kept in a thermostat at a temperature of 50 ^o C for five months.

 Variants of the proposed composition of the adhesive for pesticides and the results of their tests on storage stability until gel formation (gelatinous mass) in comparison with the prototype are presented in table 1.

 Adhesives in which the volume ratio of surfactant: KOS has lower values are mainly intended for seed treatment, while others are mainly for the treatment of vegetative plants.

 The achieved positive effect when using an adhesive for pesticides in the treatment of seeds with dressing is illustrated by experiments 1-13.

 In experiments 1-7, the strength of the treater treatment on spring wheat seeds was verified.

 Experiment 1. 5 ml of water was poured into a glass flask, 0.4 ml of pesticide adhesive having the formulation 2 from Table 1 was added. The mixture was stirred for 3 minutes, 2 g of Vitavax 200 disinfectant, SP (375 + 375 g / kg) were loaded. mixed for 15 minutes. Then, with stirring, water was added to a total volume of 10 ml and a stable working suspension was obtained.

 1 kg of spring wheat seeds was poured into the model of a drum treater, 10 ml of a working treater suspension was loaded into it. The seeds were mixed in the dressing model for 20 minutes to obtain uniformly colored pickled seeds.

 The strength of the etchant was tested on a vibrating unit for sieve analysis. A layer of seeds with a height of 15 mm was stirred for 30 minutes, the dust that had crumbled with dust was quantitatively transferred to a flask and analyzed for the content of the active substance. The percentage of the seed disinfectant of the amount applied to the seeds was 3%.

 Experiments 2-4. The experiments were carried out under the conditions of experiment 1, but with varying formulations and consumption of adhesive for pesticides.

 Experience 5 (comparative). Dressing and testing of the seed was carried out under the conditions of experiment 1, but without the use of an adhesive for pesticides.

 Experience 6-7. The experiments were carried out under the conditions of experiment 1, but Derozal, KS (500 g / l) with a flow rate of 0.6 l / t was used as a disinfectant.

 The results obtained in experiments 1-7. (the effect of the formulation and consumption of the adhesive on the strength of fixing the pesticide on the seeds of corn) are presented in table 2.

 The data in Table 2 and the results of similar experiments with other dressing agents, as well as with plant growth regulators, show that for a firm fixation of biologically active substances on the surface of the seeds, the required dose of CBS per 1 ton of seeds, depending on the pesticide consumption rate and seed size, is 7.5- 100 ml / t.

 In experiments 8-13, the biological effectiveness of the protectants with the use of adhesive was tested.

 Experience 8 (reference). 5 ml of water was poured into a glass flask, 4 ml of TMTD disinfectant, VSK (400 g / l) were loaded, mixed for 15 minutes. Then, with stirring, water was added to a total volume of 10 ml and a stable working suspension was obtained.

 1 kg of spring wheat seeds were poured into the dressing model, 10 ml of the working dressing suspension was loaded into it. The seeds were mixed in the dressing model for 20 minutes and received pickled seeds.

 Experience 9 (1/2 reference). Processing was carried out under the conditions of experiment 8, but TMTD, VSK (400 g / L) disinfectant was loaded in an amount of 2 ml.

 Experiment 10. 3 ml of water was poured into a glass flask, 0.166 ml of pesticide adhesive was added, formulation 1. The mixture was stirred for 3 minutes, 2 ml of TMTD disinfectant, VSK (400 g / l) were loaded, mixed for 15 minutes. Then, with stirring, water was added to a total volume of 10 ml and a stable working suspension was obtained. Further processing was carried out under conditions of experiments 8 and 9.

 Experiments 11-13. Seed treatment was carried out under the conditions of experiments 8-10, respectively, using the protectant Fenoram super, SP (470 + 230 g / kg).

 The etched seeds obtained in experiments 8–13 under laboratory conditions were checked for seedling damage by root rot and mold. The results of laboratory tests, the biological effectiveness of seed treatment of spring wheat when using an adhesive is presented in table 3. Control-treatment of seeds with water with a flow rate of 10 l / t

 Experiments 14-23. The experiments were carried out by analogy with comparative experiments 8-10. They confirmed the effectiveness of the adhesive on the basis of the proposed mixture of oligoalkoxysiloxanes in the treatment of seeds of 7 agricultural crops with 6 different preparations. The test results are shown in table 4. It was found that when using adhesive, the consumption rate of the protectant or plant growth regulator can be reduced by 1.5- 2 times.

 The achieved positive effect when using an adhesive for pesticides in the treatment of vegetative plants is illustrated by experiments 24-39.

 In experiments 24-29, an adhesive was used with herbicides.

 Experience 24. In a container for the preparation of the mother liquor, 5 l of water was poured, 0.15 l of Kross herbicide, VGR (92 + 47 g / l) was added. With stirring, the mother liquor was poured into the sprayer tank with 250 l of water and 1 hectare of barley crops was treated in the tillering phase. After 20 days, we recorded the weediness of crops by weeds.

 Experiment 25. The experiment was carried out identically to experiment 25 with a consumption rate of the Cross VGR herbicide (92 + 47 g / l) of 0.10 l / ha.

 Experiment 26. 5 l of water was poured into the container for the preparation of the mother liquor, 0.10 l of Cross GGR herbicide (92 + 47 g / l) and 300 ml of pesticide adhesive with formulation 8 were added. The mother liquor was poured into the sprayer tank with 250 with stirring l of water and treated 1 hectare of barley crops in the tillering phase. After 20 days, we recorded the weediness of crops by weeds.

 Experiments 27-29. The experiments were carried out identically to experiments 25-27 with the herbicide Cowboy, VGR (368 + 17.5 g / l) with consumption rates of 0.18 and 0.12 l / ha. The obtained test results of the biological effectiveness of herbicides in barley crops when used together with an adhesive. Control-processing of crops with water with a flow rate of 250 l / ha are presented in table 5.

 The results of experiments 24-29 showed that the use of adhesive can reduce the rate of consumption of the herbicide by 30%. In experiments 30-38, the developed adhesive for pesticides was tested as an auxiliary substance in the treatment of vegetative plants with fungicide. Oksikhom, SP (670 + 130 g / kg), plant growth regulator Immunocytophyte, TAB (31.2 g / kg), as well as with the insecticide Chlorofos, RP, 970 g / kg. The effect of the adhesive on the effectiveness of the fungicide Oksikhom, SP (670 + 130 g / kg) and the plant growth regulator Immunocytophyte, TAB (31.2 g / kg) against downy mildew of hop, are presented in Table 6 and the effect of the adhesive on the effectiveness of the chlorophos insecticide, RP (970 g / kg) against hop alfalfa weevil in table 7. Control-treatment with water 400 l / ha.

 The results of experiments 30-38 show that the use of an adhesive for pesticides on vegetative plants together with fungicides, plant growth regulators and insecticides helps to increase their biological effectiveness.

Claims (2)

1. Adhesive for pesticides, including oligomeric polyalkoxysiloxanes, a nonionic surfactant and a water-soluble organic solvent, characterized in that as oligomeric polyalkoxysiloxanes contains a mixture of oligoalkoxysiloxanes of the General formula R [—O — Si (OR) ₂ —O ^- ] _n R, where R = alkyl C ₂ -C ₃ ; n = 1-10, and as a nonionic surfactant, it contains a mixture of polyethylene glycol fatty alcohol esters of the structure of the general formula BUT (-CH ₂ -CH ₂ -O-) _m R ₁ , where m = 2-10; R ₁ = C ₆ -C ₁₂ alkyl, with a volume ratio of polyalkoxysiloxanes and surfactant 1: 0.2-13. 2. The adhesive according to claim 1, characterized in that it contains a water-soluble organic solvent in a volume ratio to polyalkoxysiloxanes predominantly 1: 1-10.

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