RU2350077C2 - Seed pre-treatment compound - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: proposed is a compound for seed pre-treatment containing an active agent represented by tebukonazol and a solvent represented by 6- aminohexanoic acid and/or oligomers thereof in the ratio of 1:(25-100) accordingly.

EFFECT: seed pre-treatment compound characterised by high fungicide effectiveness that is to be implemented in the field of agriculture.

1 tbl, 3 ex

Description

The invention relates to agriculture, and in particular to compositions for seed dressing.

Known preparations containing tebuconazole - Raxil as an active substance in the form of a suspension concentrate (60 g / l a.a.) or a wetting powder (20 g / kg a.a.) (Pesticides and agrochemicals approved for use on the territory of the Russian Federation. Supplement to the journal “Protection and Quarantine of Plants” No. 6, 2005, p.166).

To expand the spectrum of action and enhance the biological activity of tebuconazole used in various mixed preparations (US Pat. RF No. 2024228, 2192743, 2040899). So, for example, in patent RU 2024228 a fungicidal composition is described in the form of an emulsion concentrate based on a mixture of propiconazole with tebuconazole, containing octylphenolpolyethylene glycol ether, calcium dodecylbenzenesulfonate, castor oil polyethylene glycol ether, tributylphenolpolyethylene ether mixture, tributylphenol polyethylene ether.

The most preferred for use in agriculture are liquid preparations, as this reduces their toxicity and increases safety in their use.

Closest to the claimed composition is a fungicidal composition based on tebuconazole containing a copolymer of vinyl pyrrolidone, an organic solvent, a nonionic surfactant and water (US Pat. RF 2138525). In this patent, nonionic, cationic emulsifiers are used as surfactants. Fatty acid polyoxyethylene ester, fatty alcohol simple polyoxyethylene ether, alkylaryl polyglycol ether, alkyl sulfonates, alkyl aryl sulfonates and aryl sulfates are also used as surfactants. The solvent used is polar and non-polar solvents such as propylene glycol, ketones, amides, cyclic compounds, aromatic hydrocarbons (xylene), esters, glycol ethers. A disadvantage of the known composition is the lack of stability over a long storage time (the storage time of the composition is determined by several days), which helps to reduce the fungicidal activity of the drug.

The objective of the invention is to develop a composition based on tebuconazole, which increases the fungicidal activity of the drug, simplifies the technology of preparation, protects the environment from pollution, and utilizes caprolactam production waste.

The task is achieved due to the fact that the composition includes, in addition to tebuconazole, 6-aminohexanoic acid and / or its oligomers. Tebuconazole seed dressing preparations are available in the form of bulk powders of complex composition and require special technology and equipment for their production. Dissolution of tebuconazole in 6-aminohexanoic acid and / or its oligomers allows the preparation to be produced in the form of a stable solution and does not require milling or special emulsifiers, stabilizers, dispersants, etc., which are usually used in the preparation of known fungicidal preparations based on tebuconazole. The proposed composition has physical stability for at least 2 years and gives a stable working aqueous solution.

Used as a solvent, 6-aminohexanoic acid and / or its oligomers play the role of an adhesive and well envelop the grains, hold firmly to them. When using hard water for the preparation of working solutions, the addition of special softeners is not required, since 6-aminohexanoic acid is a good complexon.

Example 1

Take 50 g of bottoms of caprolactam with a molecular weight of 224-819, dissolve in 50 ml of water and dissolve 2 g of tebuconazole in the resulting mixture. The resulting composition is diluted in water so that the dose of the drug is 0.3; 04 and 0.5 kg / t.

Example 2

100 g of 6-aminohexanoic acid are taken, dissolved in 50 ml of water, and 1 g of tebuconazole is dissolved in the resulting mixture. The resulting composition is diluted in water so that the dose of the drug is 0.3; 04 and 0.5 kg / t.

Example 3

Moscow-35 spring wheat seeds naturally infected with fungi are treated with test compounds. After 5 days, the seeds are laid out for germination in a moist chamber. The experiments are carried out at a temperature of 25 ° C for 8 days. After this, seed damage by fungi and their germination ability are determined.

Table Drug effectiveness Preparations Consumption rate, kg / t Seed germination,% Affection,% Weight of 100 seedlings, g Root rot Other mushrooms The control - 81 29th 25 12.75 Composition according to the patent of the Russian Federation No. 2138525 1,5 75 5 fourteen 11.9 Composition according to the patent of the Russian Federation No. 2138525 0.5 76 7 12 11.7 The composition according to example 1 0.5
0.4
0.3 83
80
84 0
0
one 0
2
four 13,2
13.13
12,13 The composition according to example 2 0.5
0.4
0.3 82
79
80 0
one
one 0
four
6 13.0
12.8
12.78

Claims (1)

A composition for seed dressing containing the active ingredient tebuconazole (I) and solvent (II), characterized in that 6-aminohexanoic acid and / or its oligomers are used as solvent in a ratio of 1:11 equal to 1: (25-100), respectively .