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Penoxsulam as a turfgrass, vineyard and orchard floor herbicide

a technology of turfgrass and herbicide, which is applied in the field of penoxsulam as a turfgrass, vineyard and orchard floor herbicide, can solve the problems of less than desirable environmental profiles, too large or too poor soil mobility, and/or being toxic to non-target plants and/or turfgrass species

Inactive Publication Date: 2006-08-17
DOW AGROSCIENCES LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003] It has now been found that penoxsulam, 2-(2,2-difluoroethoxy)-N-(5,8-dimethoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-yl)-6-(trifluoromethyl) benzenesulfonamide, is an effective herbicide for controlling broadleaf weeds in turfgrass, vineyards and orchards. The invention concerns a method for controlling undesirable vegetation in turfgrass, vineyards and orchards which comprises contacting the vegetation or the locus thereof with, or applying to the soil to prevent the emergence or subsequent growth of vegetation, a herbicidally effective amount of penoxsulam.
[0004] For turf applications, the invention includes herbicidal compositions comprising an herbicidally effective amount of a) penoxsulam in admixture with an agriculturally acceptable adjuvant or carrier and b) a fertilizer.
[0005] Particularly effective compositions of penoxsulam and fertilizer are granule compositions having an average particle size of from about 0.5 millimeters (mm) to about 2.5 mm. These compositions are preferentially applied as dry product.

Problems solved by technology

Commercial herbicides, for example, 2,4-D, mecoprop-P, clopyralid, triclopyr and methylarsonic acid, have serious deficiencies such as requiring a high application rate to be effective, possessing less than desirable environmental profiles, having too great or too poor soil mobility and / or being toxic to non-target plants and or the turfgrass species.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Penoxsulam 0.05% 46-O-0 Urea Granule

[0027] In a tumbler, 2,490 grams of 46-O-0 urea granule of average particle size of 2.15 mm, and 3.75 grams of amorphous silica absorbent were added. Tumbler was run at a speed that enabled a good flow of the granules. In an atomizer, 2.5 grams of the 50% penoxsulam milled concentrate (1.25 grams penoxsulam) and 3.75 grams of water were added. The diluted suspension of penoxsulam was sprayed onto the granules. The obtained granules were assayed and found to contain 0.052% penoxsulam.

example 2

Penoxsulam 0.05% 28-4-12 Mixed Fertilizer Granule

[0028] In a tumbler, 2,490 grams of 28-4-12 mixed granule of average particle size of 0.75 mm, and 3.75 grams of amorphous silica absorbent were added. Tumbler was run at a speed that enabled a good flow of the granules. In an atomizer, 2.5 grams of the 50% penoxsulam milled concentrate (1.25 grams penoxsulam) and 3.75 grams of water were added. The diluted suspension of penoxsulam was sprayed onto the granules. The obtained granules were assayed and found to contain 0.048% penoxsulam.

example 3

Penoxsulam 0.01% 28-3-10 Mixed Fertilizer Granule

[0029] In a tumbler, 11,961 grams of 28-3-10 mixed fertilizer granules of average particle size of 1.5 mm was added. While running the tumbler, a liquid that consisted of 2.64 grams of penoxsulam 50% milled concentrate (penoxsulam 1.32 grams) and 18.0 grams of water was sprayed onto the granules from an atomizer. After the spraying, 18.0 grams of amorphous silica was added and incorporated with the granules. The obtained granules were assayed and found to contain 0.010% penoxsulam.

Postemergent Activity of Granule Herbicides

[0030] Field studies were conducted in established turfgrass sites containing a natural population of target broadleaf weeds. Replicated trials, containing a minimum of three replications and having individual plots ranging in size from 25 to 50 ft. sq (2.3 to 4.6 square meters), were initiated in the late spring when turf and weeds were actively growing. Granule treatments were uniformly applied to individual p...

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Abstract

Penoxsulam, 2-(2,2-difluoroethoxy)-N-(5,8-dimethoxy [1,2,4]-triazolo[1,5-c]pyrimidin-2-yl)-6-(trifluoromethyl)benzenesulfonamide, is useful in controlling broadleaf weeds and sedges in turfgrass and in vine and orchard floors.

Description

BACKGROUND OF THE INVENTION [0001] This invention relates to a method of controlling broadleaf weeds in turf, vineyards and orchards using an herbicidally effective amount of penoxsulam, 2-(2,2-difluoroethoxy)-N-(5,8-dimethoxy[1,2,4]triazolo[1,5-c]-pyrimidin-2-yl)-6-(trifluoromethyl)benzenesulfonamide. [0002] The search for compounds which have a combination of excellent herbicidal activity towards target weeds and low toxicity towards non-target plants is a continuing one because of factors such as the desire for compounds exhibiting greater activity, better selectivity, lower undesirable environmental impact, lack of phytotoxicity to the locus of application, lower production and market cost and higher effectiveness against weeds resistant to known herbicides. In particular, there exists a need for effective control of broadleaf weeds in turfgrass and in trees and vines. Commercial herbicides, for example, 2,4-D, mecoprop-P, clopyralid, triclopyr and methylarsonic acid, have serio...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01N59/04A01N43/40C05G3/60
CPCA01N39/02A01N37/38A01N41/06A01N43/40A01N43/90C05G3/02A01N39/04A01N37/10A01N37/40A01N2300/00A01N25/12C05G3/60
Inventor LOUGHNER, DANIEL LOUISALEXANDER, ANITA LENORAOGAWA, TOSHIYABREUNINGER, JAMES MARKWARD
Owner DOW AGROSCIENCES LLC
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