SU581837A3 - Herbicide - Google Patents

Description

(54) HERBICIDE COMPOSITION

one

The invention relates to chemical agents for controlling undesirable vegetation, namely, herbicidal compositions containing active substances from the class of organic compounds and auxiliary elements from among liquid or solid carriers, emulsifiers / dispersants, etc.

Herbicidal compositions are known, the active ingredients of which are substituted amides of carboxylic acids. These include, for example, a composition containing as active ingredient N-2, b-diethylphenyl-N-methoxymethylchloroacetamide 1J and also a composition based on N-2,6-dimethylphenyl-N-butoxyethyl-chloroacetamide 2. However, known compositions of this type is not effective enough.

The purpose of the invention is a new herbicide composition based on substituted amides of carboxylic acids, which has a high herbicidal activity and. selectivity of action.

This is achieved by using a substituted ami as the active ingredient of the herbicidal composition.

chloroacetic acid of the general formula A-OR

CCHjCl

where U is C. — C—, alkyl, allyl, or cyclopropyl;

one

R

hydrogen or methyl;

And methyl or ethyl;

R and R are independently of each other hydrogen, bromine or methyl, and only one of them can be hydrogen;

A is an unsubstituted or singly substituted methyl ethylene chain, in an amount of from 0.1 to 95 wt.%.

The usual uses of the herbicidal composition are: solutions, powders, pastes, emulsions, etc. They are prepared by known methods.

The composition according to the invention is effective for controlling cereal and prosid weeds, as well as dicotyledonous weeds. She is selective with regard to such

cultivated plants, such as cotton, co, corn, rice, wheat, sugar beets, etc. Its effectiveness is manifested in both pre-emergence and post-emergence application. Recommended consumption rates of existing inputs are 0.1–10 kg / ha, preferably 0.5–2 kg / ha.

Connection number

N-2,3,6-trimethylphenyl-L- (2-methoxyethyl) chloroacetamide

N-2,3, b-trimethylphenyl-N- (2-ethoxyethyl) -chloroacetamide

N-2,3, b-trimethylphenyl-N- (2-isopronoxyethyl) -chloroacetamide

N-2,3,5, b-tetramethylphenyl-N- (2-methoxyethyl) chloroacetamide

N-2, 3-dimethylphenyl-N- (2-methoxyethyl) chloroacetamide

N-2, 3-dimethylphenyl-N- (2-ethoxyethyl) -chloroacetamide

N-2,5-dimethyl-b-ethylphenyl-L- (2-methoxyethyl) -chloroacetamide

N-2,5-dimethyl-b-ethylphenyl-N- (2-ethoxyethyl) -chloroacetamide

N-2,5-dimethyl-b-ethylphenyl-L- (2-isopronoxyethyl) chloroacetamide

N-2,5-dimel; yl-b-ethylphenyl-N- (2-propoxyethyl) chloroacetamide

N-2,5-dimethyl-b-ethylphenyl-N- (2-allyloxyethyl) -chloroacetamide

N-2,5-dimethylphenyl-L- (2-methoxyethyl) -chloroacetamide

N-2,5-dimethylphenyl-n- (1-methoxyprop-2-yl) chloroacetamide

N-2, 3-dimethyl-b-ethylphenyl-N- (2-methoxyethyl) -chloroacetamide

N-2, 3-dimethyl-b-ethylphenyl-N- (2-ethoxyethyl) -chloroacetamide

N-2, 3-dimethyl-b-ethylphenyl-N- (1-methoxyprop-2-ylD "-chloroacetamide

N-2, 3-dimethylphenyl-N- (1-methoxyprom-2-yl) -chlorohistamide.

Example 1. Pre-emergence application.

The seeds of the experimental plants are sown in the prepared soil and a day after that, the soil is treated with water suspensions of active hosts. The vessels are left in a greenhouse at 22-25 ° C and 70% relative humidity. The analysis of the results of the experiment was carried out 28 days after the treatment.

The method for producing compounds of formula 1 is based on the reaction of substituted anilines with anhydride or monochloroacetic acid chloride. They are obtained in some other ways.

Compounds of the general formula 1 are presented in gabLo.

Table 1

Chemical name uh

Rating scale: 9 - no damage, 1 - full of plant death, 8-2 - intermediate values.

For comparison, known herbicides are used:

A - M-2 methylphenyl-K- (1-methoxyprov-2-yl) -chloroacetamide;

B - N-2,6-diethylphenyl K- (methoxymethyl) -chloroacetamide.

The results of the experiment are presented in table 2 and 3 ..

The numbers of the compounds correspond to the numbers in Table 1,

Table.

Continued table. 2 Example 2. Weed control in rice crops. The clay boxes filled with garden soil were seeded with rice on one side and weeds on the other. A solution of the active substance yanosili on the soil surface immediately after sowing (100 ml / m). Boxes left

Example 3. Pre-emergence application.

Special vessels are filled with arable land of average weight, seeds of experimental plants are sown on its surface, covered with 2 cm of soil and moistened. One day after sowing

2 1

0.5

2

one

0.5

2

one

0.5

2 1 58

The plant is treated with a suspension of the active substances and left for 28 days in the greenhouse condition. After that, the herbicidal effect is determined on a scale.

The results of the experiment are presented in

table.5.

J T a b l and c a

9 9 9

8 9 9

eleven

1 1 1

1 1 1

one

9 9 9

9

eleven

1 1 1

1 1 1

9 9

one

9 9 9

9 9

1 1 1

1 1 1

1 1 1

9

9 9

9 9

eleven

one

one

one

1 37, 10 in a greenhouse at a temperature of 24-27 C and a relative humidity of 70%. The results of the experiment were determined 28 days after sowing on a scale similar to Example 1. The results of the experiment are presented in Table 4. Table 4

581837.12

eleven

Continued tabl, 5

Cl, 71-118, 1972 (prototype).