RU1692005C - Pesticide composition - Google Patents

Abstract

The invention relates to chemical plant protection products, in particular to water-soluble compositions of chemical plant protection products, using the method of precise application, and can be used in agriculture. The purpose of the invention is to increase storage stability, efficiency, ensuring the possibility of accurate application and fixing of the drug on the surface of a plant According to the invention, aqueous solutions of active substances with a concentration of the latter 0.1 to 30 wt.% contain polyvinyl alcohol, gelatin and glycerin in percent concentration (wt.%) 3.5 - 74; 1.0 to 32; 0.1 - 9.0 responsibly. The introduction of this mixture into an aqueous solution allows to obtain a composition having the property of passing from a liquid state to a gelatinous state and vice versa, while maintaining this property during storage. Due to these properties, the composition adheres well to the surface of the plant, which increases its efficiency by 1.5-2 times. In addition, the composition is suitable for accurate application, which is especially important in homesteads 7 tab.

Description

FIELD OF THE INVENTION The invention relates to chemical plant protection products, in particular to water-soluble compositions of plant protection chemicals that are applied by precision application methods, for example, by spreading, and can be used in agriculture.

The aim of the invention is to increase storage stability, retention ™, efficiency and the ability to accurately apply and fix the preparation on the surface of a plant. The goal is achieved using a water-soluble polymer base composition / for the preparation of preparations of plant protection chemicals containing components in the following ratio, wt.%:

Polyvinyl

alcohol 3.5-7.4

Gelatin 1.0-3.2

Glycerin0.1-9.0

Water Else up to 100%

This composition can exist in two physical states - fluid and gelatinous,

As studies have shown, only with a strictly defined ratio of components, namely (wt.%): Polyvinyl

alcohol 3.5-7.4

Glycerin0.1-9.0

Gelatin 1.0-3.2

Water Else up to 100%

a composition is obtained with the necessary properties, the rapid cooling of which from a temperature of 30 ° C to a temperature of not higher than 15 ° C brings it into a gelatinous state, which persists upon subsequent heating to 30 ° C.

When cooled slowly, the composition does not go into a gelatinous state.

A base composition was prepared by mixing aqueous solutions of polyvinyl alcohol and glycerol with aqueous solutions of gelatin, water at 30 ° C (Example No. 1). The proposed composition is named Marker.

To prepare the desired preparation, the calculated amount of a chemical plant protection agent is introduced into the base composition instead of the corresponding hour ™ of water, all are mixed at 30 ° C.

The studies showed that when 30% of plant protection chemicals are introduced into the base composition of aqueous solutions, it retains the properties described above.

Example 1 Preparation of a Gelling Supplement

Solution No. 1. 12 g of polyvinyl alcohol and 10 g of glycerol are dissolved in 78 ml of water with stirring at a temperature of 70 ° C. Q for 1 h,

Solution No. 2, 10 g of gelatin was poured into 90 ml of room temperature water and allowed to swell for 1 h. Then, 0 swollen gelatin with water was heated with stirring at 30 ° C until the gelatin was completely dissolved.

Then, 50 g of solution No. 1 is mixed with 20 g of solution No. 2 and 30 g of water at 5 ° C.

The composition of the composition,%;

Polyvinyl

alcohol6

Glycerin5

0 Gelatin2

Water87

If the resulting solution is rapidly cooled from 30 to 15 ° C, a gelatinous solution is obtained.

5 Upon gradual cooling to 15 ° C (within 15-20 minutes), a gel-like solution is not obtained.

With vigorous shaking, the gelatinous composition changes to a fluid-0 state.

Example 2. The composition,%:

Polyvinyl

alcohol 3.4

Gelatin 1.5

5 Glycerin 9.1

Water 86.

Regardless of the cooling rate, the liquid composition did not acquire a gelatinous state, EXAMPLE 3. Composition composition,%:

Polyvinyl

alcohol 7.5

Gelatin 1.7

Glycerin 0.3

5 Water 90.5

Regardless of the cooling rate, the liquid composition became solid jelly. With vigorous shaking, a transition to a fluid state of not 0 was observed.

Example 4. The formulation and properties of a number of sequential compositions are presented in the following Table 1.

The composition and properties of aqueous solutions of 5 PVA, gelatin and glycerol are shown in table 1.

Example 5. Preparation of a glyphosate-based formulation.

To a mixture of 50 g of solution No. 1 and 20 g of solution No. 2 obtained according to example No. 1

instead of 30 g of water, 12.5 g of a 40% aqueous glyphosate (roundup) solution and 17.5 g of water are added. The mixture was stirred at 30 ° C. for 15 minutes.

If the resulting solution is rapidly cooled from 30 to 15 ° C, a gelatinous solution is obtained.

Upon gradual cooling to 15 ° C, a gel-like solution is not obtained.

With vigorous shaking, the jelly-like composition transforms into a liquid state.

The resulting preparation has the following compositions,%:

Polyvinyl alcohol 6.0 Glycerol 5.0 Gelatin 2.0 Glyphosate, 40% v.a. 12.5;

5% of the active substance (a, c.) Water74.5

II Polyvinyl alcohol 6.0 Glycerol 5.0 Gelatin 2.0 Glyphosate, 40% v.a. 12.5

(5% a.v.)

Dye (rhodamine C) 0.05

Water74.45

Example 6. By the method described in example 5, formulations of preparations with different contents of glyphosate, 2M-4X, chlorocholinchloride and 2,4-D-amine salt were prepared.

The formulations and properties of the drugs are given in table, 2,3.

The physical properties of the composition are given in table.2.

The formulation of preparations prepared on the basis of the base composition and containing various amounts of active substances is presented in Table 3.

Example 7, Test glyphosate Marker for herbicidal activity.

The test was carried out under greenhouse conditions on sod-podzolic soil. Oats, peas and mustard served as biotests.

The drug was tested at 0.1; 0.3; 0.5% concentration of the active substance (a, c.). Glyphosate with CMC was taken as a reference. The preparation was applied to the plant with a pipette or capillary tube. Drops on a leaf plate. The accounting for herbicidal activity was determined on the day 16-20 days after the use of the drug in% death of the biotests for control.

The results of the tests. the effectiveness of the compositions are presented in table.4.

All the compositions shown in Table 4 are capable of multiple transitions from a liquid state to a gelatinous state and vice versa.

From table 4 it is seen that glyphosate Marker at a 0.1 and 0.3% concentration in action is much more active than glyphosate with CMC.

Example 8. Experience with sprinkling.

Glyphosate Marker was tested at 3-5% concentration. The preparation was applied at the rate of one drop per plant. After 30 minutes conducted artificial sprinkling for 3 minutes The results and effect of Marker glyphosate on bioassays (death of bioassays (%) to control) are given in Table 5.

It can be seen from the data in Table 5 that after 3 min of irrigation, the herbicidal activity of Marker-glyphosate at 3% and 5% concentration is significantly higher than glyphosate with CMC.

Example 9. The test for the herbicidal activity of 2,4-0-amine salt and 2M-4X (2-methyl-4-chlorophenoxyacetic acid), manufactured using Marker.

Drugs were tested under various conditions. As test objects used peas, oats, mustard.

The Marker preparation in a liquid flowing state was applied using a pipette or capillary tube to the surface of a sheet or growth point.

The accounting for herbicidal activity was determined 16-20 days after administration of the preparation.

The results of drug studies are presented in table.6. Corresponding preparations with CMC were taken as a reference.

The effect of the Marker-preparations on bioassays (death of bioassays (%) to control) are shown in Table 6,

Marker preparations 2,4-D and 2M-4X at a concentration of 0.1% and 0.3% dv, according to the effect on biotests, were more active than 2,4-D and 2M-4X with carboxymethyl cellulose (CMC).

EXAMPLE 10 Stability testing of preparations using a Marker was carried out under conditions of accelerated storage for 45 days at a temperature of 54 ° C, which corresponds to normal storage for 2 years. Verification of the physical stability of the preparation under conditions of accelerated storage; the verification results are presented in Table 7.

From Table 3 it can be seen that the marker-glyphosate preparation is very stable. It remains stable after 45 days of storage at

temperature 54 ° C and does not lose the ability to repeatedly transition from a fluid to a gelatinous state.

Thus, pesticidal compositions having the ability to repeatedly pass from a liquid state to a gelatinous state and vice versa are obtained.

When the composition of the invention is applied to the surface to be treated, regardless of the initial state (gelatinous or fluid), it forms a structured drop that is difficult to wash off with water.

Preparations using Marker are very stable. Thus, the glyphsate marker remains stable even after storage for 45 days at a temperature (which corresponds to normal storage for 2 years) and does not lose the ability to repeatedly transition from a fluid to a gelatinous state.

Preparations made using the Marker are applied in a fluid state using an applicator (e.g., pipette or capillary tube) to the surface of the sheet or to the growth point. The applied drop quickly hardens and adheres well to the surface of the plant. Due to the special structural and mechanical properties of the droplets, it is difficult to wash off with rain. After evaporation of water on the surface of the plant, a polymer film is formed containing the herbicide or

another plant protection product. If the product stiffens in the package, it can easily be transferred to a fluid state by shaking or heating from the heat of the hand.

The aforementioned Marker properties in combination with the necessary packaging elements can provide a languid dosage when applying the drug and create the necessary amenities for the consumer. A dye may be added to the formulation to provide visual control.

The use of herbicides on the Marker allows to reduce the consumption of drugs per 1 ha by 1.5-2 times.

The Marker formulation is suitable for applying systemic formulations to plants, i.e., those that are capable of moving through the vascular system of plants. Once on the leaves, they are absorbed inward and spread throughout the plant.

It is most advisable to use preparations on the Marker to control perennial rhizomes (wheatgrass, porcupine, humai) and root shoots (pink and yellow sow thistles) weeds. It is promising to use preparations on the Marker to destroy weeds in the production of strawberries. (56) PCT Application W084 / 03417, class A 01 N25 / 00. 1983,

Horth Set, 1985, v. 20, Kfe 1, 64-66.

Table 1

Table 4

Characteristic

The basic formulation of the drug Marker

freshly cooked

Viscous liquid, when standing does not separate

Gelatinous liquid

Possesses

Table 6

with

Table 7

cg to u o o e

cheers

45 days at 54 ° C

Glyphosate marker 3%

freshly cooked

45 days at 54 ° C

Basic formulation of an analogue with CMC

freshly cooked

45 days at 54 ° C

Analogue with CMC glyphosate, 3%

freshly cooked

45 days at 54 ° C

spine, when slack

 liquid

Viscous liquid, when standing does not separate

Gelatinous liquid

Possesses

Viscous liquid Inhomogeneity when viscous is solid, weakens when standing stratifies

Inhomogeneous viscous liquid when stratified

Does not possess

Viscous liquid when stratified

Inhomogeneous liquid exfoliates when standing

Inhomogeneous viscous liquid when stratified

Does not possess

Formula of the invention as a water soluble polymer

polyvinyl alcohol and gelatin and an extra-PESTICIDAL COMPOSITION based on glycerol in the following, respectively, water-soluble active ingredients of its 5th use, May. %:

substances containing water-soluble Active ingredient 0.1-30

polymer, characterized in that, for the purpose of polyvinyl alcohol 3,5-7,4

enable accurate deposition of Gelatin 1.0-3.2

nor fixing on the surface of the rasta-Glycerin 0.1 -9.0

them, increasing the efficiency and IQ Water Up to 100 storage stability, it contains