| 摘要 |
Compounds of the formula AND DERIVATIVES THEREOF, INCLUDING ESTERS, THIOESTERS, AND AMMONIUM AND METAL SALTS THEREOF, WHEREIN R1 is aryl, unsubstituted 2-furyl or 2-furyl substituted at the 5-position by halogen or NO2; R2 and R3 are H or CH3 and X is Cl or Br, are selective defoliating herbicides useful to control weeds in agriculture and horticulture, e.g., cultivation of corn, rice and cotton.
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