SU537611A3 - Herbicidal composition - Google Patents

Abstract

1497461 Synergistic herbicide compositions BASF AG 13 May 1975 [28 May 1974] 20059/ 75 Heading A5E A herbicidal composition comprises a 2, 1, 3 - benzothiadiazinone - (4) - 2, 2 - dioxide of formula: wherein R<SP>1</SP> is alkyl or chloroalkyl, or a salt thereof, and N-4-isopropylphenyl-N', N'-dimethyl urea. The compositions find application as total or selective herbicides and may contain other listed active ingredients.

Description

(54) HERBICIDE STRUCTURE

This invention relates to chemical means for controlling weeds in crops of cultivated plants, namely, to herbicidal compositions based on synergistic mixtures of organic compounds.

Herbicidal formulations containing mixtures of benzothiadiazinone-4 derivatives and urea derivatives as an active substance are known, for example, a mixture of 2,2-dioxide 3-alkyl-2,1,3-benzothiadiazinone-4 and N-3,4 dichlorf Y-dimethyl: Urea.

However, the known herbicidal compositions of this type are either not sufficiently selective or have a too limited spectrum of action against weeds.

In order to eliminate these drawbacks, a new herbicidal composition has been proposed that effectively suppresses weeds and has a selective effect.

The proposed herbicidal composition is a synergistic mixture based on 2,2-dioxide 3-alkyl-2,1,3-benzothiadiazinone - 4 of the general formula

where R is the lowest kil;

or its salts and urea derivative - M-4-isopropyl1 phenyl-N, N - dimethyl urea, and the weight ratio of the components is in the range of 0.1-10: 1, preferably 0.3-3: 1, respectively.

Recommended doses of the proposed herbicidal composition are in the range from 0.1 to 30 kg / ha, preferably from 0.2 to b kg / ha. In large doses, it can be used.

as a continuous action herbicide.

The usual forms of application of the composition are solutions, emulsions, pastes, powders, granules, etc. They are prepared by well-known methods. The content of active substances in these

forms is in. range from 0.1 to

95 weight. %, preferably from 0.5 to 90 weight. %

New herbicidal composition compatible with

other herbicides.

Example 1. In greenhouses, various plants with a height of 4-20 cm are treated with the following individual active principles and their mixtures in the form of dispersions:

I) 3 - isopropyl - 2,1,3 - benzothiadiazinone (4) - 2,2, - dioxide;

II) sodium salt of 3 - isopropyl - 2,1,3 benzothiadiazinone - (4) - 2,2 - dioxide;

Iii) dimethylamino salt of 3 - isopropyl2, 1,3 - benzothiadiazinone - (4) - 2,2 - dioxide;

Iv) diethanolamine salt of 3 - isopropyl2, 1,3 - benzothiadiazinone - (4) - 2,2 - dioxide; 3 V) N - 4 - isopr | an1PIl-yl, .M-dimethi1 Urea. After 15–20 days, the herbicidal action is revealed. Mixture render on cultural 5

Note. No o-gerzitsidnogo action, 100-complete destruction of plants.

Note. O-herbicidal action no, 100-complete destruction of plants.

Example 2. In greenhouses, various plants 5–22 cm in height are treated with separate active principles and their mixtures in the form of dispersions, aqueous solutions.

After 12-20 days, the herbicidal

Table 1

Table 2

act. With the same compatibility of the mixture act more efficiently than the individual components.

The results of the experiments are given in table. 3 and 4. 4 plants have a better herbicidal effect than the individual components, with the same selectivity. The results of the experiments are given in table. 1 and 2.

Note. O-herbicidal action no, 100-complete destruction of plants.

Dose (kg / ha) of the mixture of active principles

Table 4