Method of inhibiting sprout growth on agronomic crops using acetohydroxy acid synthase inhibiting herbicides

• US 5,244,866 A
• Filed: 07/31/1992
• Issued: 09/14/1993
• Est. Priority Date: 07/31/1992
• Status: Expired due to Term

• Current Assignee: BASF AG (BASF SE)
• Original Assignee: American Cyanamid Co (Pfizer Inc.)
• Inventors: Tayler, Peter N.
• Primary Examiner(s): Raymond, Richard L.
• Assistant Examiner(s): BEMBENICK, BRIAN
• Application Number:
  US07/923,392
• Time in Patent Office: 410 Days
• Field of Search: 71/92, 71/65, 504/253, 504/276
• US Class Current: 504/253
• CPC Class Codes: A01N 43/50 1,3-Diazoles; Hydrogenated 1,3-diazoles
• CPC Class Codes: A01N 43/90 having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
• CPC Class Codes: A01N 47/36 containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof

Abstract

This invention relates to the use of acetohydroxyacid synthase (AHAS) inhibiting herbicides to prevent or delay sprout formation in agronomic crops. More particularly, this invention relates to the application of imidazolinones on tubers, such as potatoes, to inhibit the post-harvest growth of sprouts.

Claims

1. A method for inhibiting sprout formation on tubers comprising administering to said tubers an effective sprout inhibiting amount of an imidazolinone.

2. The method according to claim 1 wherein the imidazolinone is administered to the tuber post-harvest.

3. The method according to claim 1 wherein the imidazolinone is selected from imazethapyr and imazapyr.

4. The method according to claim 3 wherein the imidazolinone is imazethapyr.

5. The method according to claim 1 in combination with a biologically effective amount of one or more other agronomic chemicals.

6. The method according to claim 1 wherein the tuber is selected from potatoes, carrots, beets, radishes and turnips.

7. The method according to claim 6 wherein the tuber is a potato.

8. The method according to claim 1 wherein the imidazolinone is administered as a tank mix, as a spray, as an aerosol or in a dip.

9. The method according to claim 8 wherein the imidazolinone is administered as a spray.

10. The method according to claim 2 wherein the effective sprout inhibiting amount comprises between about 0.05 g and 1 g per ton of tubers.

11. The method according to claim 10 wherein the effective sprout inhibiting amount comprises between about 0.25 g and 1 g per ton of tubers.

12. The method according to claim 11 wherein the effective sprout inhibiting amount comprises about 0.5 g per ton of tubers.

13. The method according to claim 10 wherein said amount of imidazolinone is mixed with about one liter of an aqueous solution.

14. The method according to claim 13 wherein the aqueous solution further comprises up to about 1% by volume of a nonionic surfactant.

15. The method according to claim 14 wherein the nonionic surfactant is selected from Agral, BIOFILM®

, multifilm X-77 and Igepal DM-710.