Combined used of lipo-chitooligosaccharides and chitinous compounds for enhanced plant growth and yield

Patent metadata

Field	Value
Publication number	US-9253989-B2
Application number	US-201213714556-A
Country	US
Kind code	B2
Filing date	Dec 14, 2012
Priority date	Jan 9, 2007
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

Compositions and methods for enhancing plant growth and crop yield in legumes and non-legumes are described. The compositions include lipo-chitooligosaccharides in combination with chitins/chitosans or in combination with flavonoid compounds or in combination with a herbicide. The method includes applying the compositions to seeds and/or plants either concomitantly or sequentially.

First claim

What is claimed:

1. A method for enhancing plant growth and/or crop yield, comprising:
applying an effective amount of a first composition to a seed and/or to the plant that grows from said seed, said first composition comprising at least one lipo-chitooligosaccharide,
applying an effective amount of a second composition to said seed and/or to the plant that grows from said seed, said second composition comprising at least one chitin or at least one chitosan,
wherein application of the first composition and second composition, in combination, enhances crop yield by at least about 2 bushels per acre as compared to that of a seed and/or plant to which only one of the first composition and second composition is applied.

2. The method of claim 1 , further comprising applying at least one herbicide to said seed and/or to the plant that grows from said seed.

3. The method of claim 2 , wherein the at least one herbicide comprises bentazon, acifluorfen, chiorimuron, lactofen, clomazone, fluazifop, glufosinate, glyphosate, sethoxydim, imazethapyr, imazamox, fomesafe, flumiclorac, imazaquin, and/or clethodim.

4. The method of claim 2 , wherein said seed is genetically modified for resistance to one or more herbicides.

5. The method of claim 1 , wherein the second composition comprises at least one chitin.

6. The method of claim 1 , wherein the second composition comprises at least one chitosan.

7. The method of claim 1 , wherein said seed is a legume seed.

8. The method of claim 1 , wherein said seed is a non-legume seed.

9. The method of claim 1 , wherein said is selected from the group consisting of soybeans, peas, chickpeas, drybeans, peanuts, clover, alfalfa, corn, cotton, rice, tomatoes, canola, wheat, barley, sugar beet, and grass.

10. The method of claim 1 , wherein said first composition has a lipo-chitooligosaccharide concentration between 10 −14 and 10 −5 M.

11. The method of claim 1 , wherein said first composition has a lipo-chitooligosaccharide concentration between 10 −10 and 10 −6 M.

12. The method of claim 1 , wherein said second composition has a chitinous compound concentration between 0.1 and 15% w/v.

13. The method of claim 1 , wherein said second composition has a chitinous compound concentration between 3 and 12% w/v.

14. The method of claim 1 , wherein the first and second compositions are applied to the seed prior to planting.

15. The method of claim 1 , wherein the first and second compositions are applied sequentially.

16. The method of claim 1 , wherein the first and second compositions are applied concurrently.

17. The method of claim 1 , wherein crop yield is enhanced by at least about 3 bushels per acre as compared to that of a seed and/or plant to which only one of the first composition and second composition is applied.

18. The method of claim 1 , wherein crop yield is enhanced by at least about 4 bushels per acre as compared to that of a seed and/or plant to which only one of the first composition and second composition is applied.

19. The method of claim 1 , wherein crop yield is enhanced by at least about 5 bushels per acre as compared to that of a seed and/or plant to which only one of the first composition and second composition is applied.

20. The method of claim 1 , wherein crop yield is enhanced by at least about 6 bushels per acre as compared to that of a seed and/or plant to which only one of the first composition and second composition is applied.

Assignees

• Novozymes Bioag As

Inventors

• Smith Raymond Stewart
• Osburn Robert Martin

Classifications

• A01N39/04

  Aryloxy-acetic acids; Derivatives thereof · CPC title

• A01N43/88

  six-membered rings with three ring hetero atoms · CPC title

• A01N43/16 Primary

  with oxygen as the ring hetero atom · 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

• A01N41/06

  Sulfonic acid amides · CPC title