Uses of thaxtomin and thaxtomin compositions as herbicides

Patent metadata

Field	Value
Publication number	US-9526247-B2
Application number	US-201414447617-A
Country	US
Kind code	B2
Filing date	Jul 31, 2014
Priority date	Dec 31, 2008
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

There is a need for a selective, low-risk herbicide that can be used to control weeds in cereal cultures and turf. The present invention discloses that a bacterial secondary metabolite, thaxtomin and optionally another herbicide is an effective herbicide on broadleaved, sedge and grass weeds. Thaxtomin A and structurally similar compounds can be used as natural herbicides to control the germination and growth of weeds in cereal, turf grass, Timothy grass and pasture grass cultures with no phytotoxicity to these crops. As a natural, non-toxic compound, thaxtomin can be used as a safe alternative for weed control in both conventional and organic farming and gardening systems.

First claim

What is claimed is:

1. A synergistic herbicidal composition comprising:
(i) 0.02 mg/ml thaxtomin A and 0.501 mg/ml clomazone, with an E/Ee of 1.3;
(ii) 0.25 mg/ml thaxtomin A and 0.531 mg/ml clomazone, with an E/Ee of 1.7;
(iii) 0.01 mg/ml thaxtomin A and 0.047 mg/ml penoxsulam, with an E/Ee of 1.2;
(iv) 0.125 mg/ml thaxtomin A and 0.051 mg/ml penoxsulam, with an E/Ee of 2.0;
(v) 0.125 mg/ml thaxtomin A and 0.0216 mg/ml bispyribac-sodium, with an E/Ee of 1.8;
(vi) 0.25 mg/ml thaxtomin A and 0.0216 mg/ml bispyribac-sodium, with an E/Ee of 1.4;
(vii) 0.125 mg/ml thaxtomin A and 0.032 mg/ml bispyribac-sodium, with an E/Ee of 18.8; or
(viii) 0.125 mg/ml thaxtomin A and 0.365 mg/ml propanil, with E/Ee of 2.0.

2. The composition according to claim 1 , wherein said composition further comprises an adjuvant, a non-ionic surfactant and/or an organic solvent.

3. The composition according to claim 1 , wherein said composition further comprises a non-ionic surfactant and/or an aliphatic alcohol.

4. The composition according to claim 1 , wherein the thaxtomin A is derived from Streptomyces sp.

5. A method for modulating growth of barnyard grass, mustard, sedge or ragweed comprising applying to said barnyard grass, mustard, sedge or ragweed or soil an amount of the composition of claim 1 .

6. The method of claim 5 wherein barnyard grass is modulated.

7. The method of claim 5 , where ragweed is modulated.

Assignees

• Marrone Bio Innovations Inc

Inventors

• Koivunen Marja
• MARRONE Pamela

Classifications

• A01N43/76

  1,3-Oxazoles; Hydrogenated 1,3-oxazoles · CPC title

• A01N47/12

  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 · CPC title

• A01N43/80

  five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2 · CPC title

• A01N57/20

  containing acyclic or cycloaliphatic radicals · CPC title

• A01N37/40

  having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system · CPC title