| abstract |
The present invention discloses a method for controlling broadleaf authigenic crops, which comprises applying a herbicidally effective amount of 6-aryl pyridine carboxylic acid, 2-arylpyrimidine carboxylic acid, or a salt or ester thereof to Broad-leaved self-cropping crops, areas adjacent to broad-leaved autogenous crops, or to soil or water to avoid emergence or growth of broad-leaved, self-produced crops. |