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INVENTION
Patent of the Russian Federation RU2282961

COMPOSITION FOR SEDIMENTATION OF SEEDS

The name of the inventor: Valilov Rail Bakirovich (RU); Zemchenkova Galina Konstantinovna (RU); Kuznetsov Vyacheslav Markovich (RU); Davydov Alexey Mikhailovich (RU); Yumadilov Rinat Khamitovich (RU); Yakovlev Valery Germanovich
The name of the patent holder: State Institution "Research Technological Institute of Herbicides and Plant Growth Regulators with Experimental Production" (NITIG)
Address for correspondence: 450029, Ufa, ul. Ulyanov, 65, NITIG
Date of commencement of the patent: 2004.04.13

The invention relates to the field of agriculture and can be used to increase crop yields. The seed dressing composition comprises an active ingredient in an amount of 20-65% by weight, a surfactant, a filler, a film former, a water hardness softener, a dye, an antifreeze, a dispersant, a diluent. As a dispersant, it contains aliphatic alcohols: one-, two-, three- or polyhydric alcohols in an amount of 10-60% by weight. The composition is presented as a suspension concentrate. The invention makes it possible to increase the dispersion of working suspensions, to improve the retention of the active substance (fungicides) on the seed surface.

DESCRIPTION OF THE INVENTION

The invention relates to the field of agriculture and can be used for the preparation of seed treatment compositions.

Fungicide carbendazim (BMC) is known, which is allowed to combat diseases of agricultural plants at rates of 0.6-1.6 kg / ha [Melnikov N.N. Pesticides and plant growth regulators. Directory. M .: Chemistry, 1995. P.251].

The fungicide benomyl (baseazol) used for dressing seeds of wheat, barley, oats, rye, rice, millet and other crops is known at rates of consumption of 1-1.5 kg / t: [Ibid. P.219].

Fungicide carboxin (vitavax) is known, used for dressing seeds of grain crops in the fight against a dusty smut and other diseases at rates of consumption of 1.5-2.6 kg / t [Ibid. C.251-252].

Tebuconazole, a systemic fungicide of a wide range of action, is used to control the diseases of leaves and grain ears at rates of application of 0.025-0.25 kg / ha, and for seed dressing against a solid and dusty bunt [Ibid. C.279-280].

Known seed protector tiram (TMTD), which is used against a complex of causative agents of cereal, vegetable and other crops. Thiram is also used in combination with other fungicides, including carboxin, tebuconazole [Ibid. P.283-285].

There is a known composition for seed treatment (RU 1467805, 23.02.1981, bulletin No. 7) containing the active ingredient and auxiliary substances, including a dispersant, which contains the sulfite-alcohol bard (SSCB) concentrate in an amount of 6.0-7, 0 wt%.

A disadvantage of the known preparations is that they are presented in the form of wettable powders and aqueous suspensions that become unstable during storage, agglomeration of solid particles occurs, resulting in a reduced fungicide retention on the seed surface, an increase in the dose of the active ingredient is required. In addition, these drugs are not effective enough for a number of causative agents of cereal diseases.

The object of the invention is to increase the dispersion of working fluids, to improve the retention of fungicides on the surface of seeds, to increase the biological activity of fungicides, and to increase crop yields.

The task is solved by using single-, two-, three- or polyhydric alcohols in the formulation as a dispersant. Incorporation of these components into the seed dressing composition contributes to a high degree of disaggregation and stabilization of the particle size of the solid phase of the working fluids, which is an essential difference between the proposed composition and the prototype. For the prototype is characterized by the process of aggregation of particles, which leads to a deterioration of the retention of the active substance on the surface of the treated seeds, a decrease in the effectiveness of the action of preservatives.

In addition, aliphatic alcohols, introduced in the amount of 10-60% in the composition for seed dressing, serve as penetrants, facilitating the penetration of the active substance through the cell wall and the pathogen membrane. The proposed composition contains the following components, wt.%:

As the active substance in the proposed formulation, thiram, benomyl, carbendazim, carboxin, tebuconazole, used alone or in a mixture, are used. As a surfactant, non-ionic OP-7, OP-10, neonol AF 9-10, neonol AF 9-12, synthanol DS-10, synthanol ALM-10 are used; Anion-active sulfonol, alkyl sulfate, lignosulfonates - sulfite-alcohol bard (SBSB) concentrate, sulfite-yeast mash concentrate (KSDB), powdered bard powder concentrate (CBP), and combinations of non-ionic and anionic surfactants.

As a filler in the composition use aerosil, white soot, kaolin; Film formers - styromal, lakris, polyvinyl alcohol; Softener for water hardness - sodium tripolyphosphate; Dye - rhodamine C, rhodamine G, pigment red 5C; Antifreeze - ethylene glycol; Diluent - water or ethylene glycol or a mixture thereof.

Dispersant working fluids for seed dressing is octyl alcohol normal or isostroeniya, 1,2-propylene glycol, 1,3-propylene glycol, diethylene glycol, triethylene glycol, polyglycols, glycerin.

The proposed suspension concentrate for seed dressing is prepared in a beaker by mixing the components, followed by grinding in a laboratory bead mill with the same milling time for the prototype and the proposed milling time composition, which is 30 minutes. At the end of grinding, working suspensions are prepared for seed dressing by diluting the formulations with water, after which, according to known methods, the particle size and retention of the active substance on the seed surface are determined.

The above is supported by the following examples.

Example 1 .

30 g of benomyl, 5 g of OP-7, 5 g of aerosil, 1.5 g of styromal, 1 g of sodium tripolyphosphate, 0.5 g of rhodamine C, 10 g of ethylene glycol, 46 g of n-octanol and 1 g of water are mixed. The resulting mixture is placed in a bead mill and comminuted for 30 minutes. By the method of optical microscopy, the mass fraction of particles smaller than 5 μm is determined. The effectiveness of seed dressing is determined by the amount of active ingredient that is retained on seeds at a rate of 1 kg ai. Per ton of seeds.

Example 2 .

65 g of carbendazime, 7.3 g of neonol AF 9-10, 0.2 g of white carbon, 1.5 g of lacrisis, 1 g of sodium tripolyphosphate, 1 g of rhodamine G, 12 g of ethylene glycol, 10 g of isooctyl alcohol and 2 g of solution Water: ethylene glycol 1: 1. Further, as in Example 1.

Example 3 .

20 g of carboxylic acid, 2 g of DSN-10 synthanol, 3 g of kaolin, 1 g of polyvinyl alcohol, 1 g of sodium tripolyphosphate, 0.2 g of red 5C pigment, 12.8 g of ethylene glycol and 60 g of glycerin are mixed. Further, as in Example 1.

Example 4 .

35 g of tebuconazole, 6 g of sulfonol, 3 g of aerosil, 2 g of styromal, 0.8 g of sodium tripolyphosphate, 0.8 g of rhodamine C, 6 g of ethylene glycol, 45 g of 1,2-propylene glycol and 1.4 g of water are mixed. Further, as in Example 1.

Example 5 .

65 grams of thiram, 5 g of OP-10, 2 g of sodium alkyl sulfate, 3 g of white carbon, 2 g of lacrice, 0.5 g of sodium tripolyphosphate, 1 g of rhodamine G, 3 g of ethylene glycol, 18 g of polyglycol and 0.5 g of water are mixed. . Further, as in Example 1.

Example 6 .

35 grams of thiram, 5 g of KSB, 4 g of kaolin, 1.5 g of polyvinyl alcohol, 0.7 g of sodium tripolyphosphate, 0.8 g of red pigment 5C, 45 g of 1,3-propylene glycol, 6 g of ethylene glycol and 2 g of water are mixed. . Further, as in Example 1.

Example 7 .

40 g of tiram, 2 g of tebuconazole, 5 g of neonol AF 9-12, 2 g of KSDB, 3 g of aerosil, 2 g of styromal, 0.6 g of sodium tripolyphosphate, 1 g of rhodamine C, 3 g of ethylene glycol, 40 g of diethylene glycol and 1 , 4 g of water. Further, as in Example 1.

Example 8 .

15 grams of thiram, 25 g of carboxylic acid, 5 g of syntanol ALM-10, 2 g of CBP, 3 g of white carbon, 2 g of lacrisis, 0.6 g of sodium tripolyphosphate, 1 g of rhodamine G, 3 g of ethylene glycol, 42 g of triethylene glycol and 1 , 4 g of water. Further, as in Example 1.

Example 9 .

20 g of benomyl, 5 g of sulfonol, 3.5 g of white carbon, 1 g of styromal, 0.5 g of red pigment 5C, 70 g of ethylene glycol are mixed. Further, as in Example 1.

Example 10

45 g of carbendazim, 5 g of neonol AF 9-12, 0.5 g of aerosil, 1 g of polyvinyl alcohol, 0.5 g of sodium tripolyphosphate, 0.5 g of rhodamine G, 10 g of ethylene glycol, 5 g of glycerin and 32.5 g water. Further, as in Example 1.

Example 11 .

65 grams of thiram, 7 g of DSN-10 synthanol, 3 g of kaolin, 2 g of lakris, 0.2 g of red pigment 5C, 7.8 g of ethylene glycol, 5 g of diethylene glycol, 10 g of water: ethylene glycol 1: 1 are mixed. Further, as in Example 1.

Example 12 .

20 g of carboxylic acid, 2 g of OP-7, 1.8 g of white carbon, 1 g of lakris, 0.2 g of rhodamine G, 75 g of ethylene glycol are mixed. Further, as in Example 1.

Example 13 is a prototype .

Analogously to Example 6. The difference is that one-, two-, three- or polyhydric alcohol is not added as a dispersant, and the amount of water is 47 g.

Example 14 is a prototype .

Analogously to Example 7. The difference is that one-, two-, three- or polyhydric alcohol is not added as a dispersant, and the amount of water is 41.4 g.

Example 15 is a prototype .

Analogously to Example 8. The difference is that one-, two-, three- or polyhydric alcohol is not added as a dispersant, and the amount of water is 43.4 g.

Dispersion of the initial active substances in the proposed composition and prototype is similar.

Example 16 35 grams of thiram, 2 g of OP-7, 1 g of aerosil, 1 g of lakris, 0.5 g of sodium tripolyphosphate, 0.5 g of rhodamine C and 60 g of diethylene glycol are mixed. Further, as in Example 1.

Example 17 35 tebuconazole, 2 g of KSDB, 1 g of aerosil, 1 g of lakris, 0.5 g of sodium tripolyphosphate, 0.5 g of rhodamine, 10 g of diethylene glycol and 50 g of water are mixed. Further, as in Example 1.

Example 18 .

Field tests are carried out on the experimental plot, consisting of plots of 10 m ² each. Etched wheat seeds are planted in the soil at a rate of 2 centners of seeds per hectare. The harvest of seeds is taken into account by continuous threshing of wheat. The prototype is a variant of the experiment, where one-, two-, three- or polyhydric alcohol as a dispersant was not added to the seed dressing composition. Control is a variant of the experiment in which seed dressing was not performed. Repeatability is fourfold. The smallest significant difference is 095 when the yield is 0.5 c / ha. The yield of wheat in the control experiment was 21 c / ha. The data presented in Table 1 show that the proposed composition has a higher dispersity: the mass fraction of particles smaller than 5 μm was 78-88%, whereas for the prototype 48-56%. The retention of the active substance after etching with the proposed composition is at the level of 96-99%, whereas for the prototype 80-84%. The yield of wheat is 24.5-26.8 centner / ha, which is much higher than in variants where one-, two-, three- or polyhydric alcohol was not used as a dispersant (22.3-22.8 centner / ha ).

Example 19 .

Study of biological activity in in vitro experiments (in pure cultures).

Experiments were conducted with regard to pathogens of cereal crops causing fusarial root rot, helminthosporium root rot, and molding and alternaria.

Petri dishes filled with a nutrient medium with introduced formulations were inoculated with test objects, kept in a thermostat at 24 ° C for 3-5 days.

At the end of the incubation, the linear growth (diameter) of the fungal colonies was measured, the growth of colonies in the control (medium without fungicides) and on media with injected drugs was compared. The inhibition of growth (efficiency) was calculated by the Abbott formula:

E = Д _к -Дo / Д _к · 100, where

E - inhibition of growth in comparison with the control (technical efficiency);

D _k - diameter of colonies in the control;

D _o is the diameter of the colonies in the experiment.

The results of the experiments are presented in Table 2.

The invention makes it possible to increase the dispersibility of working suspensions, to improve the retention of fungicides on the seed surface, and to increase the fungicidal activity of the preparation against the causative agents of seed molding, root rot and alternaria.

CLAIM

A seed dressing composition comprising an active ingredient and auxiliary components, including a dispersant, characterized in that, as a dispersant, it contains aliphatic alcohols in an amount of 10-60% by weight.

2. A seed dressing composition according to claim 1, characterized in that, as auxiliary components, it comprises a surfactant, a filler, a film former, a water hardness softener, a dye, an antifreeze, a dispersant, a diluent, in the following proportions, by weight:

print version
Date of publication 04.03.2007gg

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