Synergistic composition and method of use

• US 8,188,006 B2
• Filed: 08/27/2010
• Issued: 05/29/2012
• Est. Priority Date: 08/28/2009
• Status: Active Grant

• Current Assignee: UPL NA Inc.
• Original Assignee: Riceco, LLC (UPL Limited)
• Inventors: Leeper, John R., Sandoski, Craig A.
• Primary Examiner(s): Pryor, Alton
• Application Number:
  US12/869,944
• Publication Number:
  US 20110053774A1
• Time in Patent Office: 641 Days
• Field of Search: None
• US Class Current: 504/130
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/00 Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application , e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
• CPC Class Codes: A01N 37/22 the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
• CPC Class Codes: A01N 43/42 condensed with carbocyclic rings
• CPC Class Codes: A01N 43/50 1,3-Diazoles; Hydrogenated 1,3-diazoles
• CPC Class Codes: A01N 47/12 containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring

Abstract

The present invention relates to a method to increase the effectiveness of an imidazolinone herbicide to suppress weedy forms of rice growth used with imidazolinone tolerant rice strains. This method involves applying an imidazolinone herbicide to imidazolinone tolerant rice strains in a field and applying either a propanil based herbicide or a thiobencarb herbicide to this rice crop, wherein the herbicide includes a synergistically effective amount a herbicidally inactive ingredient. The propanil based herbicide synergistically affects the activity of an imidazolinone herbicide by increasing the effectiveness of an imidazolinone herbicide used with the rice to suppress weedy forms of rice growth, such as red rice.

Claims

1. A method to increase the effectiveness of imazethapyr to suppress weedy forms of rice growth used with imidazolinone tolerant rice strains comprising:

applying imazethapyr to said rice; and

applying a propanil based herbicide to said rice, wherein said propanil based herbicide includes an herbicidally effective amount of an herbicidally active ingredient including propanil and a synergistically effective amount of an herbicidally inactive ingredient, to synergistically affect the activity of imazethapyr by increasing the effectiveness of imazethapyr used with said rice to suppress weedy forms of rice growth.

2. The method of claim 1 wherein said herbicidally inactive ingredient is an effective amount of a non-ionic surfactant to synergistically affect the activity of imazethapyr.

3. The method of claim 1 wherein said herbicidally inactive ingredient is an effective amount of an adjuvant to synergistically affect the activity of imazethapyr.

4. The method of claim 1 wherein said herbicidally inactive ingredient is an effective amount of a surfactant to synergistically affect the activity of imazethapyr.

5. The method of claim 1 wherein said herbicidally inactive ingredient in an effective amount of a crop-oil concentrate to synergistically affect the activity of imazethapyr.

6. The method of claim 1 further comprising applying a herbicidally effective amount of thiobencarb.

7. The method of claim 1 further comprising applying an herbicidally effective amount of quinclorac.

8. A method to increase the effectiveness of imazethapyr to suppress weedy forms of rice growth used with imidazolinone tolerant rice strains comprising:

applying an imidazolinone herbicide to said rice; and

applying a thiobencarb based herbicide to said rice, wherein said thiobencarb based herbicide includes a herbicidally effective amount of an herbicidally active ingredient including thiobencarb and a synergistically effective amount of an herbicidally inactive ingredient, to synergistically affect the activity of imazethapyr by increasing the effectiveness of an imidazolinone herbicide used with said rice to suppress weedy forms of rice growth.

9. The method of claim 8 wherein said herbicidally inactive ingredient is an effective amount of a non-ionic surfactant to synergistically affect the activity of imazethapyr.

10. The method of claim 8 wherein said herbicidally inactive ingredient is an effective amount of an adjuvant to synergistically affect the activity of imazethapyr.

11. The method of claim 8 wherein said herbicidally inactive ingredient is an effective amount of a surfactant to synergistically affect the activity of imazethapyr.

12. The method of claim 8 wherein said herbicidally inactive ingredient in an effective amount of a crop-oil concentrate to synergistically affect the activity of imazethapyr.

13. The method of claim 8 further comprising applying an herbicidally effective amount of propanil.

14. The method of claim 8 further comprising applying an herbicidally effective amount of quinclorac.