• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU980601A3
    申请号:SU802903456
    申请日:1980-04-09
    公开日:1982-12-07
    发明作者:Хампрехт Герхард；Вюрцер Бруно
    申请人:Басф Аг (Фирма)；
    IPC主号:
    专利说明:

    ts)
    METHOD OF STRUGGLE AGAINST UNDESIRABLE VEGETATION
     The invention relates to chemical-IMM methods for controlling weeds and undesirable vegetation by treating it or the soil on which it grows with herbicides. Known methods of controlling undesirable vegetation, in which benzoxazine derivatives are used as a herbicide. These include, for example, a method using 2- (meta-trifluoromethylphenyl) -3,1-benzOKcasHH-it-OHa 1) However, the known methods of this type are not sufficiently effective for some types of weeds. ,,,, The purpose of the invention is a new method of controlling weeds and unwanted vegetation using herbicide, which has increased efficiency. This goal is achieved by using benzoxazine total fori (I) hydrogen, fluorine or chlorine as the herbicide; 3-methylcyclopentyl, 2,5-dimethylfuranyl-3, Trifluoromethylbenzyl, phenyl or substituted phenyl, which can have difluormethoxy, difluorochloromethoxy, trifluoromethoxy, 1,1,2 trifluoro-2-chloroethoxy, 1,1,2,2- tetrafluoroethoxy, pentaftrrethoxy, trichloromethoxy, trifluoromethylthio, trifluoromethylsulfonyl; R may also mean 3 difluorochloromethoxy-A-chlorophenyl,. 3.98 moreover, if R-f is hydrogen, then R does not mean phenyl, in the amount of 0, kg / ha. The forms of application of this herbicide are common: solutions, powders, pastes, concentrates, etc. They are prepared by known methods. The content of active ingredients in these forms can range from 0.1-95% by weight. The method of obtaining compounds of general formula I is based on the interaction of unsubstituted or substituted anthranilic acid with an excess of the corresponding carboxylic acid halide in an aromatic tertiary amine at 10-60 C. Below are the compounds of general formula I used as active substances of the herbicide, and examples illustrating the effectiveness the proposed method. and Oh process them. The herbicide in the form of an aqueous suspension or emulsion is splashed, nodded by means of finely distributed nozzles to the plant sprouts or the uncovered soil of the plants. The pots are placed in a greenhouse with different temperature zones. In addition, for thermophilic plants, a temperature of 20–30 ° C is chosen, and for the rest, a temperature of 10–20 ° C. Experiments are carried out for 2 to k weeks. At this time, the plants are observed and evaluated for their reaction to individual active substances. The evaluation is conducted within O-100. At the same time, O means normal shoot and no damage, and 100 means no shoot or complete destruction of at least the above-ground part of the plants. Known benzoxazines A and B are used as reference.
    Example. For conducting experiments to determine the effectiveness of the method of controlling undesirable vegetation, plastic flower pots with a capacity of 300 cm and loamy sand with 1.5% humus as a substrate are used. Seeds of experimental plants according to table. 2-10 are sown by species or transplanted by germinated young plants. For post-harvest treatment, plants are grown to a height of cm and then
    The results of the experiments are presented in table. 2-10 (post-harvest processing). The numbers of the compounds correspond to the numbers in table. 1. The herbicidal index has been calculated for plants: mari, colza, chrysanthemum, sesbani, nightshade.
    table 2
    Table 3 of the mean values of dope, chamomile,
    980601
    8 Table
    980601
    10 Table 7
    Table 8
    E table
    权利要求:
    Claims (1)
    [1]
    Claim
    A method of controlling undesirable vegetation by treating it or the soil on which it grows with a 5-benzoxazine derivative herbicide, characterized in that, in order to increase the efficiency of the method, a compound of the general formula 0 is used as a benzoxazine derivative
    In 1 about
    IQI where R 1 'is hydrogen,' fluorine or chlorine;
    R 2 · - 3-methylcyclopentyl, 2,5Dimethylfuranyl-3,3 “trifluoro-20 methylbenzyl, phenyl or substituted phenyl, which may have as a substituent difluoromethoxy, difluorochloromethoxy, trifluoromethoxy,
    1.1.2-trifluoro-2-chloroethoxy,
    1.1.2.2 - tetrafluoroethoxy, pentafluoroethoxy, trichloromethoxy, trifluoromethylthio, trifluoromethylsulfonyl; R ' 1 may also mean 3-difluorochloromethoxy-4-chlorophenyl, moreover, if R ^ is hydrogen, then R ^ ne is phenyl., In an amount of 0.5 “3 kg / ha.
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    法律状态:
    优先权:
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