US 6,723,681 B2Granted

Herbicidal compositions for tolerant or resistant cereal crops

AssigneeHoechst Schering AgrEvo GmbH

InventorsErwin Hacker, Hermann Bieringer, Lothar Willms

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Abstract

Herbicide combinations (A)+(B), if appropriate in the presence of safeners, with an effective content of (A) broad-spectrum herbicides from the group (A1) glufosinate (salts) and related compounds (A2) glyphosate (salts) and related compounds such as sulfosate, (A3) imidazolinones such as imazethapyr, imazapyr, imazaquin, imazamox or their salts and (A4) herbicidal azoles from the group of the protoporphyrinogen oxidase inhibitors (PPO inhibitors) and (B) one or more herbicides from the group of the compounds consisting of (B0) one or more structurally different herbicides from the abovementioned group (A) and/or (B1) foliar- and/or soil-acting herbicides which are particularly effective selectively in cereals against monocotyledonous harmful plants and/or (B2) predominantly foliar-acting herbicides which are effective selectively in cereals against monocotyledonous and dicotyledonous harmful plants and/or (B3) foliar- and soil-acting herbicides which are effective selectively in cereals against dicots and monocots and/or (B4) foliar-acting herbicides which are effective selectively in cereals against monocotyledonous and dicotyledonous harmful plants, are suitable for controlling harmful plants in cereal which consists of tolerant or resistant mutants or transgenic cereal plants and the cereal crops are tolerant to the herbicides (A) and (B), if appropriate in the presence of safeners, which are contained in the combination.

A method for controlling harmful plants in cereal crops without rice and corn, comprising the step of applying a herbicide combination, wherein the herbicide combination comprises a synergistically active amount of:

(A) a broad-spectrum herbicide selected from the group consisting of:
(A1) compounds of the formula (A1),
in which Z is a radical of the formula —OH or a peptide radical of the formula —NHCH(CH3)CONHCH(CH3)COOH or —NHCH(CH3)CONHCH[CH2CH(CH3)2]COOH, and their esters and salts and other phosphinothricin derivatives,
(A2) compounds of the formula (A2) and their esters and salts,
(A3) imidazolinones and their salts and
(A4) herbicidal azoles from the protoporphyrinogen-oxidase inhibitors (PPO inhibitors) and the PPO-inhibitor WC9717, and
(B) one or more herbicides selected from the group consisting of:
(B1) foliar- and/or soil-acting (residual action) herbicides which are effective selectively in cereals, selected from the group consisting of isoproturon, chlorotoluron, fluthiamide, prosulfocarb, pendimethalin, fenoxaprop-P, fenoxaprop, clodinafop, diclofop, tralkoxydim, imazamethabenz and flupyrsulfuron, and/or
(B2) predominantly foliar-acting herbicides which are effective selectively in cereals against monocotyledonous and dicotyledonous harmful plants, selected from the group consisting of metsulfuron, triasulfuron, iodosulfuron, chlorsulfuron and sulfosulfuron, and/or
(B3) foliar- and soil-acting herbicides which are effective selectively in cereals against dicots and monocots, selected from the group consisting of diflufenican/flurtamone, metosulam and flumetsulam, and/or
(B4) foliar-acting herbicides which are effective selectively in cereals against monocotyledonous and dicotyledonous harmful plants, selected from the group consisting of:
(B4.1) tribenuron, amidosulfuron, LAB271272, thifensulfuron, prosulfuron and cinidon-ethyl, and
(B4.2) herbicides of the growth hormone type selected from the group consisting of 2,4-D, CMPP-P, dichlorprop, MCPA, fluroxypyr, dicamba, picloram, bentazone and clopyralid, and
(B4.3) hydroxybenzonitriles/photosynthesis inhibitors selected from the group consisting of bromoxynil, ioxynil, bifenox and metribuzin, and
(B4.4) PPO inhibitors selected from the group consisting of carfentrazone, pyraflufen and fluoroglycofen, provided that they are different from the respective compounds (A4), and
(B4.5) HPPDO inhibitors selected from the group consisting of picolinafen, aclonifen, isoxaflutole, clomazone, sulcotrione and mesotrione, and salts and esters of the afore-mentioned herbicides (B),
and the cereal crops are tolerant to the herbicides (A) and (B) which form a constituent of the combination, optionally in the presence of safeners,
with the proviso that the combination of (A4) carfentrazone(-ethyl) and (B) isoproturone or tribenuron-methyl is excluded.
2.The method of claim 1, wherein active substance (A) is glufosinate-ammonuum.

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Abstract

Claims11