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Herbicidal compositions comprising pyroxasulfone v

A herbicidal composition and composition technology, applied in the direction of biocides, herbicides, algicides, biocides, etc., can solve problems such as unpredictable synergistic activity

Inactive Publication Date: 2011-02-16
BASF SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Unfortunately, synergistic activity is often not expected for combinations of known herbicides, even if the compounds share close structural similarity to the known synergistic combination

Method used

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  • Herbicidal compositions comprising pyroxasulfone v
  • Herbicidal compositions comprising pyroxasulfone v
  • Herbicidal compositions comprising pyroxasulfone v

Examples

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Embodiment approach

[0122] According to another preferred embodiment of the present invention, the pyrazole herbicides (group b.1) are selected from compounds of formula Ic and salts thereof:

[0123]

[0124] where R 2 , R 3a , R 4 , R 6 and R 7 as defined herein and where R 2 , R 3a , R 4 , R 6 and R 7 have one of the following meanings independently of each other and more preferably in combination:

[0125] R 2 preferably fluorine or chlorine,

[0126] R 4 Chlorine is preferred,

[0127] R 6 Preferably difluoromethoxy,

[0128] R 7 preferably chlorine or bromine, and

[0129] R 3b preferably selected from C 1 -C 4 Alkyl, C 1 -C 2 Haloalkyl and C 3 -C 6 Cycloalkyl substituted C 1 -C 2 Alkyl, where R 3b More preferably selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, 2-methylpropyl, trifluoromethyl and cyclopropylmethyl.

[0130] Examples of particularly preferred compounds of formula Ic are selected from the following compounds of formula Ic, wherein

[...

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Abstract

The present invention relates to herbicidally active compositions, which comprise 3-[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-ylmethylsulfonyl]-4,5-dihydro-,5-dimethyl-1,2-oxazole [common name pyroxasulfone] and at least one herbicide B which is an selected from protoporphyrinogen-IX-oxidase inhibitors. The invention furthermore relates to the use of a composition as defined herein for controlling undesirable vegetation in crops. When using the compositions of the invention for this purpose the herbicide A and the at least one herbicide B can be applied simultaneously or in succession in crops, where undesirable vegetation may occur.

Description

[0001] The present invention relates to herbicidally active compositions comprising 3-[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-ylmethylsulfonyl]-4, 5-dihydro-5,5-dimethyl-1,2- An azole [common name pyroxasulfone] and at least one herbicide B. Background of the invention [0002] In crop protection, it is in principle desirable to increase the specificity and reliability of the action of active compounds. It is especially desirable that crop protection products be effective against harmful plants and at the same time be tolerated by the useful plants. [0003] Pyroxasulfone has been described in EP-A 1364946 and US 2005 / 0256004. [0004] Although pyroxasulfone is a highly effective pre-emergence herbicide, its activity at low application rates is not always satisfactory. Furthermore, pyroxasulfone is known to have only poor post-emergence activity (Y. Yamaji et al., "Application timing and field performance of KIH-485", 11. Abstract of the paper of IUPAC I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/80A01N43/54A01N43/76A01N43/84A01P13/02
CPCA01N43/80A01N43/54A01N43/76A01N43/84A01N2300/00
Inventor B·西韦尼奇A·西蒙W·K·莫博格R·R·埃文斯
Owner BASF SE
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