Herbicide compositions

Details Herbicide compositions Herbicide compositions

1999-08-12

2001-03-06

Clardy, S. Mark (Department: 1616)

Plant protecting and regulating compositions

Plant growth regulating compositions

Plural active ingredients

C504S137000

Reexamination Certificate

active

06197727

ABSTRACT:

TECHNICAL FIELD
The present invention relates to herbicide compositions, and more particularly, it relates to herbicide compositions for foliar treatment and a weeding method by foliar treatment of weeds therewith.
BACKGROUND ART
At present, a great number of herbicides are commercially available and used. There are, however, many kinds of weeds to be controlled and their occurrence extends over a long time. For this reason, requested are herbicides having higher herbicidal activity, wide herbicidal spectra and safety on crops.
DISCLOSURE OF THE INVENTION
The present inventor has extensively studied to find out excellent herbicides. As a result, he has found that various weeds occurring on crop lands or non-crop lands can be effectively controlled by foliar treatment of these weeds with a herbicide composition comprising as active ingredients, a 2-chloro-4-fluoro-5-(4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl)phenyl C
1
-C
5
non-cyclic hydrocarbyl ether and one selected from the group consisting of (RS)-2-(4-chloro-2-methylphenoxy)propionic acid (common name, mecoprop; hereinafter referred to as mecoprop), 2,4-dichlorophenoxyacetic acid (common name, 2,4-D; hereinafter referred to as 2,4-D), (4-chloro-2-methyl)phenoxyacetic acid (common name, MCPA; hereinafter referred to as MCPA), 2- [[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)-amino]carbonyl]-amino]sulfonyl] benzoate (common name, metsulfuron-methyl; hereinafter referred to as metsulfuron-methyl), 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamide (common name, chlorsulfuron; hereinafter referred to as chlorsulfuron), ethyl (R)-2-[4-(6-chloro-1,3-benzoxazol-2-yloxy)phenoxy]propanoate (common name, fenoxaprop-P-ethyl; hereinafter referred to as fenoxaprop-P-ethyl), methyl (RS)-2-[4-(2,4-dichlorophenoxy)phenoxy]propionate (common name, dichlofop-methyl; hereinafter referred to as dichlofop-methyl), 3,5-dibromo-4-hydroxybenzonitrile (common name, bromoxynil; referred to as bromoxynil), 4-hydroxy-3,5-diiodobenzonitrile (common name, ioxynil; referred to as ioxynil), 3-(4-isopropylphenyl)-N′,N′-dimethylurea (common name, isoproturon; hereinafter referred to as isoproturon), N′-(3-chloro-4-methylphenyl)-N,N-dimethylurea (common name, chlorotoluron; hereinafter referred to as chlorotoluron) and N-(2,4-difluorophenyl)-2-[3-(trifluoromethyl)phenoxy]-3-pyridinecarboxamide (common name, diflufenican; hereinafter referred to as diflufenican), in which case the herbicidal activity is synergistically enhanced as compared with the cases where the active ingredients are used separately, which makes possible low-dose application; and the herbicidal spectra are expanded, so that a wide variety of weeds can be controlled, particularly on wheat, barley, oat, or rye fields without exhibiting material phytotoxicity on wheat, barley, oat, or rye, thereby completing the present invention.
Thus, the present invention provides herbicide compositions (hereinafter referred to as the present compositions) each comprising as active ingredients, a 2-chloro-4-fluoro-5-(4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl)phenyl C
1
-C
5
non-cyclic hydrocarbyl ether ( hereinafter referred to as the ether compound) and one (hereinafter referred to as component (a)) selected from the group consisting of mecoprop, 2,4-D, MCPA, metsulfuron-methyl, chlorsulfuron, fenoxaprop-P-ethyl, dichlofop-methyl, bromoxynil, ioxynil, isoproturon, chlorotoluron and diflufenican; and a weeding method by foliar treatment of weeds therewith.
The C
1
-C
5
non-cyclic hydrocarbyl in the ether compound, which is one of the active ingredients of the present compositions, refers to, for example, 2-propynyl, 1-methyl-2-propynyl, allyl, 1-methylallyl, isopropyl or ethyl. These compounds can be produced by the processes as shown in the following Production Examples.


REFERENCES:
patent: 96/39392 (1996-12-01), None

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