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Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides

a technology of pyrimidine carboxylic acid and composition, which is applied in the direction of biocide, herbicides and algicides, organic chemistry, etc., can solve the problems of preventing crop growth, which is a constant recurring problem, and achieve the effect of increasing the activity speed and speed of activity on cypes

Inactive Publication Date: 2009-03-05
CORTEVA AGRISCIENCE LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0021]It has also been surprising that a mixture of propanil, a photosystem (PS) II-inhibiting herbicide and a pyridine carboxylic acid of the formula (I) exhibits a synergistic action in control of IPOHE and Polygonur persicaria L. (POLPE), at application rates lower than the rates of the individual compounds and an increased speed of activity on CYPIR and Scirpus maritirus L. (SCPMA) over that observed with effective control rates of the individual compounds. Similarly, a mixture of carfentrazone-ethyl, a protoporphyrinogen IX oxidase (PROTOX) inhibiting herbicide, and a pyridine carboxylic acid of the formula (I) exhibits a synergistic action in control POLPE, CYPES, and CYPIR at application rates lower than the rates of the individual compounds as well as an increased speed of activity on CYPES.

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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  • Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides
  • Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides
  • Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides

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examples

Evaluation of Postemergence Herbicidal Activity of Mixtures in Cereal Crops

[0099]Seeds of the desired test plant species were planted in Sun Gro MetroMix® 306 planting mixture, which typically has a pH of 6.0 to 6.8 and an organic matter content of about 30 percent, in plastic pots with a surface area of 103.2 square centimeters (cm2). When required to ensure good germination and healthy plants, a fungicide treatment and / or other chemical or physical treatment was applied. The plants were grown for 7-36 days in a greenhouse with an approximate 14 hour photoperiod which was maintained at about 18° C. during the day and 17° C. during the night. Nutrients and water were added on a regular basis and supplemental lighting was provided with overhead metal halide 1000-Watt lamps as necessary. The plants were employed for testing when they reached the second or third true leaf stage.

[0100]Treatments consisted of compound (as listed in Tables 1 through 64) and a second cereal herbicide alone...

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Abstract

An herbicidal composition containing (a) a pyridine or pyrimidine carboxylic acid component and (b) a second cereal or rice herbicide component provides synergistic control of selected weeds.

Description

[0001]This application claims the benefit of U.S. Provisional Application 60 / 966,340 filed Aug. 27, 2007.FIELD OF THE INVENTION[0002]This invention concerns a synergistic herbicidal composition containing (a) an herbicidal pyridine or pyrimidine carboxylic acid component and (b) a cereal or rice herbicide component.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 literature and a large number are in commercial use.[0004]In some cases, herbicidal active ingredients have been shown to be more effective in combination than when applied individually and this is referred to as “synergism.” As described in the Herbici...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01N43/40A01N43/54A01N25/32A01P13/00
CPCA01N43/40A01N43/54A01N25/32A01N33/12A01N35/10A01N37/22A01N37/38A01N37/40A01N39/02A01N39/04A01N41/10A01N43/38A01N43/42A01N43/50A01N43/56A01N43/58A01N43/653A01N43/70A01N43/76A01N43/80A01N43/82A01N43/88A01N43/90A01N47/12A01N47/30A01N47/34A01N47/36A01N47/38A01N57/20A01N2300/00C07D213/79A01N43/707
Inventor SATCHIVI, NORBERT M.SCHMITZER, PAUL R.YERKES, CARLA N.WRIGHT, TERRY R.
Owner CORTEVA AGRISCIENCE LLC
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