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Synergistic herbicidal composition containing penoxsulam and bentazon

a technology of herbicidal composition and penoxsulam, which is applied in the field of synergistic herbicidal composition containing, can solve the problems of constant recurring problem of inhibiting crop growth, and achieve the effect of ensuring the safety effect of ri

Inactive Publication Date: 2012-03-01
DOW AGROSCIENCES LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0007]The species spectra of penoxsulam and bentazon, i.e., the weed species which the respective compounds control, are broad and highly complementary. It has now been found that a combination of penoxsulam and bentazon exhibits a synergistic action in the control of rice flatsedge (Cyperus iria; CYPIR); arrowhead (Sagittaria trifolia; SAGTR); and barnyardgrass (Echinochloa crus-galli; ECHCG) at application rates equal to or lower than the rates of the individual compounds. It has also been found that a combination of penoxsulam and bentazon exhibits a safening effect on rice (Orysa sativa; ORYSA).

Problems solved by technology

The protection of crops from weeds and other vegetation which inhibit crop growth is a constantly recurring problem in agriculture.

Method used

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Embodiment Construction

[0008]Bentazon is the common name for 3-(1-methylethyl)-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide. Its herbicidal activity is described in The Pesticide Manual, Fifteenth Edition, 2009. Bentazon controls a wide range of economically important broadleaf and sedge weeds. It can be used as the acid itself or as an agriculturally acceptable salt or ester. Use as a salt is preferred, with the sodium salt being most preferred. Bentazon is also known as bentazone and bendioxide.

[0009]Penoxsulam is the common name for 2-(2,2-difluoroethoxy)-N-(5, 8-dimethoxy-[1,2,4]triazolo[1,5-c]pyrimidin-2-yl)-6-(trifluoromethyl)benzenesulfonamide. Its herbicidal activity is described in The Pesticide Manual, Fifteenth Edition, 2009. Penoxsulam controls Echinochloa spp., as well as many broadleaf, sedge and aquatic weeds in rice, and Apera spp. grass in cereals, as well as many broadleaf weeds in aquatics, many cereal crops, range and pasture, IVM and turf.

[0010]The term herbicide is used herein to m...

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Abstract

A synergistic mixture of penoxsulam and bentazon controls weeds in crops, especially rice and other cereal and grain crops, pastures, rangelands, IVM and turf. In addition to providing improved post-emergence herbicidal weed control, the mixture safens damage to rice.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61 / 378,130 filed Aug. 30, 2010.FIELD OF THE INVENTION[0002]This invention concerns a synergistic herbicidal composition containing (a) penoxsulam and (b) bentazon for controlling weeds in crops, especially rice, cereal and grain crops, pastures, rangelands, industrial vegetation management (IVM), aquatics and turf. These compositions are disclosed as providing improved post-emergence herbicidal weed control and improved safening on rice.BACKGROUND OF THE INVENTION[0003]The protection of crops from weeds and other vegetation which inhibit crop growth is a constantly recurring problem in agriculture. To help combat this problem, researchers in the field of synthetic chemistry have produced an extensive variety of chemicals and chemical formulations effective in the control of such unwanted growth. Chemical herbicides of many types have been disclosed in the ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01N43/90A01P13/00
CPCA01N43/90A01N2300/00A01N43/88A01N35/08A01N43/18A01N43/54A01N43/40
Inventor MANN, RICHARD K.
Owner DOW AGROSCIENCES LLC
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