| abstract |
Novel pyridazin-3-one derivatives of formula (1) are provided, which are useful as active ingredients of herbicides, wherein R<1> is haloalkyl; R<2> and R<3> are the same or different and are hydrogen, alkyl, haloalkyl, or alkoxyalkyl; and Q is [Q-1], [Q-2], [Q-3], [Q-4], or [Q-5]. Also provided are their use and intermediates for their production. |