Uses of thaxtomin and thaxtomin compositions as herbicides

Patent metadata

Field	Value
Publication number	US-10010079-B2
Application number	US-201615338812-A
Country	US
Kind code	B2
Filing date	Oct 31, 2016
Priority date	Dec 31, 2008
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

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 for controlling crabgrass and/or ragweed comprising about 0.1 to 0.125 mg/ml thaxtomin A and glyphosate, wherein (i) thaxtomin A and glyphosate are present in a synergistic amount to control crabgrass and/or ragweed, (ii) said synergistic amount is measured by determining E/Ee, and (iii) E/Ee is 1.4.

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. The composition of claim 1 , wherein the synergistic amount to controls crabgrass by at least 83%.

6. The composition of claim 1 , wherein the synergistic amount to controls ragweed by at least 29%.

7. A synergistic herbicidal composition for controlling crabgrass and/or ragweed comprising about 0.1 to 0.125 mg/ml thaxtomin A and about 0.754 to 2.198 mg/ml glyphosate.

Assignees

• Marrone Bio Innovations Inc

Inventors

• Koivunen Marja
• MARRONE Pamela

Classifications

• A01N41/10

  Sulfones; Sulfoxides · CPC title

• A01N57/10

  having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds (A01N57/02 takes precedence) · CPC title

• A01N65/00

  Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof (containing compounds of determined constitution A01N27/00 - A01N59/00) · 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

• A01N43/90

  having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system · CPC title