SU736855A3 - Herbicidic composition - Google Patents

Abstract

1518672 Herbicidal composition BOOTS CO Ltd 10 Sept 1975 [17 Sept 1974] 40337/74 Heading A5E A herbicidal composition comprises 4-chloro- 2 oxobenzothiaydin-3-ylacetic acid or a salt or ester thereof and 3, 6 dichloro-2-picolinic acid or a salt or ester thereof. The preferred active ingredients are the ethyl ester of 4- chloro-2-oxobenzothiaydin-3-yl acetic acid and 3, 6 dichloro-2-picolinic acid. Additional active ingredients may be used e.g. 4-chloro-2-methylphenoxyacetic acid, α (4 chloro-2-methyl phenoxy) propionic acid. 2, 4-dichlorophenoxy acetic acid, α (2, 4-dichlorophenoxy) propionic acid or a salt or ester of any of these acids. The composition can be formulated in the usual liquid and solid forms and is particularly suitable for the control of mayweeds or polygonaceous weeds in crops of e.g. oilseed rape.

Description

(54) HERBICIDE COMPOSITION

t

This invention relates to chemical IMDs of DTLI for controlling undesirable vegetation in crops of cultivated crops, in particular, compositions based on 3 6-dichloro-capanoic-2 acid in a mixture with phenoxyalkanoic acid derivatives.

The herbicidal composition based on 3,6-dichloropicolinic-2 acid and its salt or methyl ester 1 is known.

Also known is the herbicide composition containing benzthiazolinone-2-yl-3-acetic acid 2 as the active ingredient 4-chlorooxO.

The foreign gerbit composition includes a mixture of trichloroacetic and aryloxyalkanoic acid (3. However, the well-known herbicidal com-rmiuHH are not sufficiently active in relation to the dicotyledonous weed plants in the cereal crops,

In order to enhance the herbicidal asset -: spine and selectivity of action, a herbicide composition based on 3.6 dichloro-2-picolinic acid or its salt, including the preferred 4-chloro-2-oxobenzothiazoline-3-yl-acetic acid or its salt or an ester, and the weight ratios of the components are 1:25 to 1: 1.-

Example 1. Plants of wheat wheat B at the tube exit stage and mountaineer are treated at a dose of 140, 210, 420 g / ha each taken separately; or OR B. the mixture at a dose of 140 + 1DO.,

0 210 + 25, 210 + 100, 420 + 12.5, 420 + 25. g / ha with compounds: 1: 4-chloro-2-oxobenzothiazolin-3-yl-acetic acid and no. 2: 3.6 dichloro 2-picolinic acid.

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After two weeks, the herbicidal activity was scored in points according to the decimal scale: O-no lesion, 10 is full of plant death.

Test results are presented

20 in the table. one..

Example 2.-Rye plants in the phase of 4-7 leaves and chamomile are diluted with 4-chloro-2-oxo-benzothiaz olin-3-yl-y Xusna ethyl ester

acids. (Compounds 3) and with | Ebdinenie number 2, indicated above at a dose of 650 g / ha or their mixture in a dose of 560 + 25, 560 + 86, 560 + 50 g / ha.

After 2 weeks, an account is taken.

3D herbicide activity in points

ICE scale tibalyi. results

presented a table. 2,

Example J. Winter wheat plants in the seedling as well as chamomile phase are treated with the potassium salt of 4-chloro-2-oxo-benzothiazolin-3-yl-acetic acid (compound 4) and the monoethanolamine salt of 3,6-dichloro-2-peak 6-linear acid (compound 5) at a dose of 70 and 100 g / ha, as well as their mixture at a dose of 70 + 30 and 100 + 30 G / GY1. After two weeks. A record of the herbicidal aktibnrsgi on a ten-year scale is carried out.

The results of the tests are shown in Table. 3,

Herbicidal activity, ball

dose, g / ha

Compound 1.

T7G

100

Z10

3.2

25

210 + 25

210

3/2

100

210 + 100

420

6.2

12.5. 420 + 12.5

420 25

6.2

420 + 25

560 + 25 560

36

Example 4. Repro plants in the germination phase are treated with Compound No. 3 and Compound No. 5, indicated above at a dose of 300, 400, 500, 600 and 700 r / rS, as well as their mixture at a dose of 30 + 25, 30D + 50, 400 + 25 , + 25, 500 + 50,

400 -f- 50, 500 + 50, 700 + 25, 600 + 25, 600 700 + 50 g / ha.

After two weeks, the herbicidal activity was recorded on a ten-point scale. The test results are presented in Table. four.

Table 1

batch of compounds

Connection 2

..2

9.5

8.5

Table 2

8.25

2.5

2/3

4.3

Dose, g / ha

Compound 3+ 25

+ 50

+ 25

+ 50

25

f 50 25

Table 3

2.7

8.0

2.7

8,8

Table 4

Herbicidal activity, score

Mixture of compounds 5 connections 4 and 5

1,3

7.7

5.2

9/0

1,3

8,8

5.2

9.3

1,3

9.0

5.2

9.8

1,3

9.6

7368558

 A herbicidal composition based on 3, b-dchlor-2-pucolic acid or its salt; About tl and h and y: with the fact that, in order to enhance the gericidal activity and electoral effect, it additionally contains 4-chloro-2-oxobenzothiazo | 1 n-3 or acetic acid or its salt or ester with

Continued table. four

1:25 to, 1; 1.

Sources of information taken into account in the examination

1. The patent of the Federal Republic of Germany 1228848, cl. 452 19/02, 07.11,66.

2. Melnikov N.N. “Chemistry and pesticide technology, M., Himi, 1974, p. 629.:

3. The patent of Japan, class, 30-F-932, 07/10/70. ,

Claims (1)

SUMMARY OF THE INVENTION A herbicidal composition based on 3, b-dichloro-2-picolinic Acid or a salt thereof; characterized in that, in order to enhance the herbicidal activity and selectivity of the action, it: additionally contains 4-chloro-2-ox with benzene and ol az n-Zu-yl-acetic acid or its salt or ester in the following weight ratios of components from 1:25 to. 1: 1. .