RU2523288C1 - Agrochemical preparation of combined action - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: agrochemical preparation of a combined action includes a glyphosate salt, a nitrogen-containing fertiliser, a growth regulator, an adjuvant and water. As the nitrogen-containing fertiliser ammonia nitrate, or potassium nitrate, or ammonium sulphonate, or nitrophosphate, or urea is applied; as the growth regulator succinic acid, or chlormequat-chloride, or esfon, is used; as the glyphosate salt its potassium, or ammonium, or dimethylamine, dimethylalkylamine, or isopropylamine salts are used. The preparation composition can additionally include a wetting agent, preferably an organisilicone super wetting agent.

EFFECT: in addition to the herbicidal action the invention performs a function of a fertiliser and a growth regulator, makes it possible to reduce time and labour consumption for processing of crops, making it possible to reduce consumption of components.

5 cl, 1 tbl

Description

The invention relates to the field of agrochemistry, in particular to glyphosate-containing liquid compositions having a predominantly herbicidal effect, but also performing the function of fertilizer and growth regulator.

Glyphosate in the form of an acid has a relatively low solubility in water and is most often used as a salt. The herbicidal effect of glyphosate salts can be enhanced by using them in combination with a number of other substances. Known herbicidal composition containing potassium or isopropylammonium salt of glyphosate in a mixture with components selected from a number of amphiphilic substances (US 6881707, 2005). However, to obtain an effective result, the herbicidal agent must be used in rather high concentrations (from 350 g / l or more).

Synergistic compositions of two herbicides are known, one of which is the glyphosate amine salts (international application WO 2012/040785).

The simultaneous application of herbicides and fertilizers for crops should lead to some decrease in the herbicidal effect, since fertilizers contribute to the growth of both cultivated plants and weeds. It was unexpectedly found that the combined application of glyphosate salts with nitrogen fertilizers with an increase in the relative content of nitrogen fertilizers leads to an increase in the herbicidal effect of the complex agent, quantitatively exceeding the effect of glyphosate salts.

The proposed agrochemical means of combined action includes glyphosate salt, nitrogen-containing fertilizer, growth regulator, adjuvant and water in the following components, wt.%:

glyphosate salt 5-30 nitrogen fertilizer 5-50 growth regulator 1-10 adjuvant 1-5 water rest

As a nitrogen-containing fertilizer, the agent may include ammonium nitrate, or potassium nitrate, or ammonium sulfate, or nitrophosphate, or urea, succinic acid, or chloromequate-chloride, or esfon as a growth regulator.

The glyphosate salt may be its potassium, or ammonium, or dimethylamine, dimethylalkylamine, or isopropylamine salt.

The tool may further include a wetting agent in an amount of 1-5 wt.%, Which is mainly used organosilicon super-wetting agent.

Table 1 presents the experimental data obtained by processing wheat crops with a combined agent, which is an aqueous solution of dimethylamine salt of glyphosate and urea with additives of growth regulator and adjuvant (the latter in concentrations of 40 and 60 g / l, respectively). Chloromequate chloride was used as a growth regulator in all experiments.

As can be seen from the table, in all cases, the addition of urea in an amount up to 200 g / l led to some decrease in the herbicidal effect of glyphosate. However, with a further increase in the urea content to 300-500 g / l, the herbicidal effect of the combined agent first increased, and then exceeded the effect of glyphosate. In this case, experiments were carried out at a concentration of glyphosate almost twice lower than that with which this herbicide is usually used.

Table 1 The concentration of components in the combined tool, g / l Percentage of weed control at different application rates glyphosate salt urea growth regulator 1,5 l / ha 2.0 l / ha 200 35 75 200 - 40 41 82 200 one hundred 40 40 78 200 200 40 45 72 200 300 40 69 98 200 400 40 84 one hundred 200 400 - 79 93 200 500 40 85 one hundred 200 400 twenty 83 97

The growth regulator also influenced the herbicidal effect of the combined agrochemical. An increase in the concentration of chloromequate chloride from 10 to 40 g / l with a constant composition of other components led to an increase in herbicidal activity. The same increase in herbicidal activity was observed in cases of using succinic acid and esfon as a growth regulator.

Selective experiments with other salts of glyphosate in combination with various nitrogen fertilizers showed the following results.

The isopropylamine salt of glyphosate at a concentration of 360 g / l (+ adjuvant 60 g / l) 7 days after application under culture provided 80% weed control and 95% after 15 days. At the same rate of application, a combination agent containing only 200 g / l of glyphosate salt in combination with 220 g / l of ammonium sulfate, after 15 days, led to the suppression of 90% of weeds. And the addition of 50 g / l succinic acid to the combined agent (growth regulator) ensures the suppression of 90% after 7 days and 100% after 15 days. The use of dimethyldodecylamine instead of isopropylamine in a combination agent provides 93% suppression after 7 days and 100% after 15 days.

Potassium glyphosate salt at a concentration of 360 g / l (+ adjuvant 50 g / l) 15 days after application under culture provided 60% weed control, and at a concentration of 200 g / l - 50%. At the same consumption rate, a combination agent containing 200 g / l of glyphosate salt in combination with 300 g / l of urea and 40 g / l of chloromequate chloride (growth regulator) provides 95% suppression. The same result is achieved by replacing the growth regulator from chloromequate chloride with esfone (2-chloroethylphosphonic acid).

The percentage of weed suppression when using 400 g / l instead of urea in a combined agent of ammonium nitrate is 62% at a consumption rate of 1.5 l / ha and 90% at a consumption rate of 2.0 l / ha. For potassium nitrate under the same conditions, 67% and 96%, respectively.

An additional introduction to the formulation of the agrochemical means of organosilicon super-wetting agents led to an increase in the herbicidal activity of the agent. The combined product containing 200 g / l of isopropylamine salt of glyphosate, 400 g / l of urea, 40 g / l of chloromequate chloride, with the addition of a super-wetting agent in the indicated concentrations, provided after 7 days% weed control:

- 4 g / l - 75%

- 10 g / l - 80%

- 15 g / l - 100%

The use of the proposed agrochemical means of combined action can significantly reduce the time and labor involved in processing crops, while allowing to reduce the consumption of components introduced for crops compared to the flow rate required for separate application of the components to obtain the same result.

Claims (5)

1. Agrochemical means of combined action, including glyphosate salt, nitrogen-containing fertilizer, growth regulator, adjuvant and water in the following components, wt.%:
glyphosate salt 5-30 nitrogen fertilizer 5-50 growth regulator 1-10 adjuvant 1-5 water rest,
moreover, succinic acid or chloromequate chloride or esfon is used as a growth regulator. 2. The tool according to claim 1, characterized in that as a nitrogen-containing fertilizer used ammonium nitrate or potassium nitrate, or ammonium sulfate, or nitrophosphate, or urea, 3. The tool according to claim 1, characterized in that the glyphosate salt is its potassium or ammonium, or dimethylamine, dimethylalkylamine, or isopropylamine salts. 4. The tool according to claim 1, characterized in that it further includes a wetting agent in an amount of 1-5 wt.%. 5. The tool according to claim 1, characterized in that as the wetting agent use organosilicon super-wetting agent.