SU495802A3 - Herbicidal composition - Google Patents

Description

(54) HERBICIDE STRUCTURE

The invention relates to chemical means for controlling weeds in iosev cultivated plants. However, known herbicides do not have a sufficiently high selectivity of action. In order to enhance the herbicidal activity, a mixture is offered, one of which is a derivative of dithiophosphate of the general formula I Oi-co-CH2- and -p- (oH-CjH, where the cycle with the nitrogen atom is a residue of cyclohexamethylamine symmetry triazine of the general formula I $ -Y1, N AluX HgCj-Hif - SH-AlK, where Alk is lower alkyl with 2 to 5 carbon atoms, the weight ratios of both components are 10: 1 to 1: 3, respectively. emulsion, dust, solution. Example: Three-, four-week rice plants (height 12-15 m) grown in a rice field are transplanted to an experimental plot, which is covered with a layer of water of 3-5 cm. a) 8-12 days later, the plot with the fresh plants that have developed during this time is treated once with the tested began accordingly; b) 4 days later, during the occurrence of weeds, the area is treated once with the test active principle and a mixture of active principles before germination. The results of the experiment are processed in each case 7-8 weeks after the site has been treated with the herbicide. Given in Table. 1 data were obtained as a result of tests depending on different rates of herbicide consumption (after emergence of shoots), and table. 2 - before the appearance of shoots. In addition, the following compounds were used as herbicides: IA - 0,0-di - n-propyldithiophosphorylacetylcyclohexamethyliimide, IB - 0 (3 - dimethylnopylamino) -siml1. Triazine,

T a b l II c a 2

four

T a b l II c a 1

Table 3

11B-2-methylthio-4-ethylamino-5-tert. butylamino-silig. triazine.

The following derivatives of syn-triazines were subjected to a similar herbicidal activity: 2-methylthio-4-ethylamino-6-t / e7. butylaeeo-simm. triazine; 2-methylthio-4-ethylamino-6-isopropylamino-c "lgl /. triazine; 2-methylthio4-ethylamino-6 - sec, butylamino - simm. triazine; 2-methylthio-4-ethylamine - 6-isobutylamio-symm. triazine; 2-ethylthio - 4-ethylamino - 6 (a, p-dimethylpropylamino) -c "; yl, triazi; 2methylthio-4, 6-bis (ethylamino). triazine.

Example 2. Weed plants in rice crops aged 3-4 weeks old, 12-15 cm tall, grown in a rice field, are treated with a mixture of compounds IA and PA and taken separately. The area is covered with a layer of water in 3-5 cm.

14 days later, a section with naturally growing weeds during this time is treated once with an active principle and a mixture of active principles, respectively, after entering.

The test results are processed 4 weeks after treatment with the herbicide. These test results are shown in Table. 3

6

Claims (1)

Claims of the invention: A herbicidal composition based on derivatives of dithiophosphate and sylia.triazine, which also means that, in order to enhance the herbicidal activity, a compound of the general formula ) -co-cng $ -p- (o-n-CzN,) 2 where the cycle with the nitrogen atom is a cyclo xamethylenimine or 2-methylpiperidyl residue, and as a triazine derivative, compounds of the general formula $ -№, i  Ш1-А1к where Alk is lower alkyl with 2-5 carbon atoms, and the weight ratios of both components are 10: 1 - 1: 3, respectively.