SU596149A3 - Herbicide composition - Google Patents

Description

: 1 The invention relates to chemical means for controlling weeds and irresistible vegetation. namely, herbicidal compositions containing synergistic mixtures of organic compounds. It is known that 3,6-dichloropicolinic acid, its esters and salts possess goicidal activity 1 1D. A synergistic; herbicidal composition is also known; a mixture of 4-HLOR-2-dxobeneothiazol-3-yl-acetic acid and 2-methoxy-3:, 6-dichles) rbenzoic acid 2. With a further increase in the effectiveness of the composition, a new herbicidal composition based on a two-component synergistic mixture containing 4-chloro-2-oxobenzotiazin-3-yl-acetic acid of the formula C1 U-CHVCOOH or its salts, or alkyl esters and 3.6-dichloropicolumines, Form .ply C1 Y or its salts, or alkyl esters. The components are taken in weight ratios at 2: 1 to 10: 1, respectively. The greatest effect is manifested at a 4: 1 ratio. It is recommended to use the proposed composition in the range of from -20 to 100 g / ha of 3,6-dichloropicolinic acid or its derivative and from 35 to 210 g / ha of 4-chloro-2-oxobenzothiazolin-3-yl-acetic acid or its derivative in terms of on acid equivalents. The herbicidal composition is used in the form of solutions, emulsions, pastes, powders, etc. They are prepared by known methods. The composition is advantageously suitable for post-harvest application in crops of cereal crops. Subsequently, 4-chloro-2-oxobenzothiazalin-3-yl-acetic acid appears as Benazolin, and 3,6-dichloropicolinic acid as 3,6-DP.

Example 1. Field experiments were carried out on winter barley sites infected with odorless chamomile in

stages 6-12 leaves. The treatment is carried out with preparations containing benazolin and 3,6-DP in the form of ethanolamine salts. The degree of weed damage is assessed 12 days after treatment. Table 1 shows the results of the experiment.

Table 1

Note. BUT

B

Example 2. An odorless chamomile is collected on the floor and planted in special vessels of 3 distances in each vessel (pot). Plants are treated with single components and their mixtures. Benazolin is used in the form of an acid, and 3,6-DP in the form of an ethanolamine salt. The drugs are used

observed lesion rate;

the expected percentage of damage, which is calculated according to the method described by Kolby (Weeds. 1967, 1.5, p. 20-22).

in the form of liquid compositions at the rate of 1000 l / ha. Experienced plants during processing are located at stations 4-6 and 8-12 leaves. The repetition of the experiment is 5-fold. The results of the experiment are observed 7, 14 or 28 days after the treatment of the plants. The data obtained are given in table 2.

Table 2 Note. Rating scale: 1 Example 3. Chamomile grown in a greenhouse to the stage of 4-6 leaves is treated with individual components: isooctyl ether 3, b-DP (compound No. 1) and ethyl ether

Continuation of the table 2 23- 4- 56-

Benazolin (compound 2), as well as a mixture of these components. Evaluation of herbicidal activity was carried out 25 days after treatment. The results are shown in the table. 3

T a b whether c and -NyyTshkalaootki CCM. Note Table 2) considering that O is no damage; weak damage; moderate damage; strong damage; very strong damage; super damage; complete damage to the plants.

Claims (2)

1. Patent of England 1003937, cl. Since 23, 1965. 2. Patent of England No. 1243006, cl. A 5 E, 1971.