SU1114319A3 - Herbicidal composition - Google Patents

Description

iu

Ifs 1 The invention relates to chemical means for controlling weeds and undesirable vegetation, containing active substances and auxiliary components. Herbicidal agents based on aryloxyalkanoic carboxylic acid derivatives are known. Containing surfactants and solvents, for example, an agent based on oximes of 2- (4-aryloxyphenoxy) -propionic acid oximes. However, the known herbicidal agents of this group are not sufficiently effective for some types of weeds grown in such crops, as with, cotton, sugar beet. The aim of the invention is to increase the herbicidal activity of the agent based on aryloxyalkanoic carboxylic acid derivatives. This goal is achieved by the fact that the herbicidal agent contains an aryloxyalkanoic acid derivative of the general formula OCH-COH CK R as the active substance, where X is hydrogen or chlorine, R is hydrogen, methyl, ethyl; R is methyl, ethyl, phenyl, together can mean tetramethylene or pentamethylene group, as the topical active substances - calcium dodecylbenzenesulfonate and ethoxylated castor oil with 36 mol of ethylene oxide, and as a solvent xylene, at a 25: 3: 7 weight ratio : 65 respectively. The proposed herbicidal agent is prepared by known methods by carefully spreading and mixing all its components. Before use, this product is diluted with water to obtain the required concentration of the active substance. In tab. Figure 1 shows the compounds of general formula (I) used as active substances. Studied the effectiveness of the proposed herbicidal agent in comparison with the 192 scientific research institute with the well-known analogous agent based on the oi-aryloxypropionic acid derivative (compound A) of the formula „/ -L F, o-cho WoSn-c (3 vy n potted pots with prepared soil and immediately after that the soil surface is treated with the proposed herbicidal agent in the form of an aqueous suspension. After that, the pots are pulled out under greenhouse conditions for 3 weeks and the result of the coat of arms is evaluated equal action on the tibular scale: 1 - full plant death or the plant did not germinate; 2-8 intermediate values; 9 - no damage, normal plant growth. As a control, use pots with seeds that were not treated with herbicidal agents but contained in similar conditions The results of the experiment are presented in Table 2. Example 2. Post-emergence experiment. Experimental plants are grown in greenhouse conditions up to the stage of formation of 4-6 leaflets and after this, they are treated with the proposed herbicidal agent in the form of an aqueous extract. Mulcia. After that, the plants continue to grow under greenhouse conditions for 15 days and evaluate the herbicidal effect as in Example 1. The control is untreated plants. The results of the experiment are presented in table. 3. In all cases, a known herbicidal agent with active substance A was tested under similar conditions. The results of the experiments indicate a high efficiency of the proposed herbicide agent. It has a good selectivity of action and for the herbicidal effect of a known agent.

Table 1

Continued table. 2

Continuation of table 2

Tzvl tsa 3

Longing heh taOl. 3

Claims (1)

A HERBICIDE AGENT, in the form of an emulsifying concentrate, containing an active substance - an aryloxyalkane carboxylic acid derivative, surfactants and a solvent, characterized in that, in order to increase the herbicidal activity, it contains an aryloxyalkanecarboxylic acid derivative of the general formula where X is hydrogen or chlorine; R is hydrogen, methyl, ethyl; ₍ R is methyl, ethyl, phenyl; R and R together can mean a tetra-methylene or pentamethylene group. as surfactants, calcium dodecylbenzenesulfonate and ethoxylated castor oil with 36 mol of ethylene oxide, and xylene as a solvent, with a weight ratio of 25: 3: 7: 65, respectively. SU_ ™ 1114319