Herbicidal compositions and herbicidal processes
AssigneeMeiji Seika Kaisha, Ltd.
InventorsTetsuo Takematsu, Makoto Konnai, Kunitaka Tachibana, Takashi Tsuruoka, Shigeharu Inouye, Tetsuro Watanabe
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Abstract
A known antibiotic, SF-1293 substance and salts thereof have now been found to exhibit high herbicidal effects against a wide variety of herbaceous and woody plants, but they are non-phytotoxic particularly to a useful woody plant, Chamaecyparis obtusa. The herbicidal effects of these SF-1293 substances can be noticeably enhanced by applying in combination with certain known herbicides or compounds having biological activities.
Claims4
A process for severely damaging or killing unwanted herbaceous and woody plants, which comprises applying to plants susceptible thereto a herbicidally effective amount at a rate of 25-3,000 g. per 10 ares of a compound of the formula:
- ##STR4## wherein M.sup.1 and M.sup.2 are each hydrogen or a cation selected from the group consisting of sodium, potassium, lithium, copper, magnesium, calcium, zinc, nickel, maganese and ammonium which is unsubstituted or substituted by 1-4 lower alkyl, hydroxy lower alkyl, or lower alkenyl;
- A is an inorganic or organic acid selected from the group consisting of hydrochloric, sulfuric, hydrobromic, phosphoric, perchloric, nitric, acetic, propionic, citric, tartaric, monochloroacetic, trichloroacetic and trifluoroacetic acids;
- n is 0, 0.5 or 1, p is the inverse number of the valency of M.sup.1 ;
- and q is the inverse number of the valency of M.sup.2.
Dependencies are inferred from the claim text.