SU524494A3 - Herbicide - Google Patents

Description

(54) HERBICID MEANS 34

emulsions, suspensions, steps, powders, granu-B table. Figure 1 shows the proposed spans prepared by the known spans of hydantoin tested as properties of a herbicide.

524494

Table 1

Example 1. Mix and grind in dust 5 weight.h. active weight and 95 weight parts. natural stone flour and dust obtained are pollinated by plants. Example 2, 50 weight parts are stirred and ground into powder, the active weight starts from 1 weight hour. dibutylnaphthalene sulfate, 4 weight.h, ligninsulfonate, 8 weight.h. highly dispersed silicic acid and 37 weight parts. natural stone flour. Before use, the resulting wettable powder is mixed with the required amount of water. Example 3. 25 weight, h. the active agent is dissolved in a mixture of 55 parts by weight. xylene and 10 weight.h. cyclohexanone, 10 parts by weight of a mixture of calcium dodecylbenzenesulfonate and a nonylphenol polyglcool ester are added and an emulsifiable concentrate is obtained, which is diluted before use to the desired concentration. Example 4. To 91 parts by weight of sand (grain size 0.5-1.0 mm) are added 2 parts by weight of spun oil and 7 parts by weight of finely ground mixture containing 75 parts by weight. current start and 25 weight.h. Natural stone flour is mixed in the mixer until a homogeneous, free-flowing and dust-free granulate is obtained. Example 5. To 90 parts by weight of an active agent are added 3 parts by weight. polyethylene oxide, the resulting mixture is dissolved in 7 parts by weight, the aromatic fraction of mineral oil and applied to plants by distribution in an extremely small volume, Example 6. Post-emergence application. The test plants are treated with herbicidal agents at a dose of 0.5 and 1 kg / ha (according to the active substance) and, three weeks after the treatment, the herbicidal activity and phytotoxicity are determined on a five-point scale; 0 - no damage 1 individual spots of light burns 2 - distinct leaf damage 3 - separate leaves and parts of the stems partially died 4 - plants partially destroyed 5 - plants completely destroyed. For comparison, 3-methyl-1-phenyl-5-methylcarbamoyloxy-hydantoin is used (compound number 7). The results of the experiments are presented in table 2. Example 7. Pre-emergence application. The seeds of tes1 plants are sown in normal soil and after 24 hours, the soil is treated with gerbide drugs of 2.5 and 5 kg / ha. Three weeks after treatment

Table 2 and evaluate herbicidal activity and ifitotoxicity according to a tigall scale: O - damage detection 1 - slight damage or slowdown 2 - distinct damage and slow growth 3 - large damage or germination of only 50% 4 - plants after germination 5 No. but destroyed or germination only 25%

The results of the experiments are given in table. 3

Table 3 5 - the plants are completely dead or not ascended. Comparison 7 is used for comparison.