SU491364A1 - Herbicidal composition - Google Patents

Description

one

This invention relates to chemical agents for controlling undesirable vegetation in crops of cultivated crops.

A herbicidal composition based on isonropyl-N-M-chlorophenylcarbamate is known, which includes 2-chloro-4, 6-bis- (isopropylamino) -symm-triazine as another component. However, the selectivity of the action of a known composition is low.

In order to enhance the herbicidal activity and selectivity of action, a composition based on iso-propyl-N-m-chlorophenylcarbamate (compound I) is proposed, which includes as another component 2-methylthio-4,6-di (isopropylamino) -symm-triazine (compound II), moreover, the weight ratios of the components are from 4: 1 to 1: 2, respectively.

Example 1. Plants of chicken millet, Uzhechishka, Mari white were test objects when studying the gerbitsidnoe activity of the mixture. Prior to the emergence of seedlings, the soil was treated at a dose of 1 and 2 kg / ha, with compound I and P, as well as with their mixture. After 17 days, we recorded the herbicidal activity as a percentage of the control. The test results are presented in Table. one.

Table 1

Example 2. Comparative tests of the proposed compounds I and II were carried out with known compounds III and IV, taken as a standard. Compound III:, N- (3,4-dichlorophenyl) -O-methoxy-M-methylurea. Compound IV: N-3,4-dichlorophenyl-M, N-dimethylurea. Separately taken drugs, and

vegetative plants of cereal and dicotyledon weed plants were also treated with a mixture in a dose of from 3 to 10 kg / ha. The activity was taken into account as a percentage of the control and but the yield of peas in c / ha and in%. The results are presented in table. 2

table 2

Claims (1)

Invention Formula A herbicidal composition based on isopropyl N-m-chlorophenylcarbamate and a derivative of substituted sym-triazine, characterized in that, in order to enhance the herbicidal activity and selectivity of action, it is introduced as a derivative of a substituted sym-triazine 2-methylthio-4,6-di- (isopropylamino) -symm-triazine, and the weight ratios of the components are respectively from 4: 1 to 1: 2.