Seed treatment methods and compositions

Patent metadata

Field	Value
Publication number	US-2015166420-A1
Application number	US-201514628694-A
Country	US
Kind code	A1
Filing date	Feb 23, 2015
Priority date	Sep 8, 2011
Publication date	Jun 18, 2015
Grant date	—

Abstract

Disclosed are methods of enhancing plant growth, comprising treating seed at least one month prior to planting with an effective amount of a plant signal molecule, wherein upon harvesting the plant exhibits at least one of increased plant yield measured in terms of bushels/acre, increased root number, increased root length, increased root mass, increased root volume and increased leaf area, compared to plants harvested from untreated seed, or compared to plants harvested from seed treated with the signal molecule just prior to or within a week or less of planting.

First claim

1 . A method of enhancing plant growth, comprising:
treating a seed at least one month prior to planting with an effective amount of a chitooligosaccharide (CO).

2 . The method of claim 1 , wherein the effective amount of the CO is applied in the form of a seed treatment composition comprising the CO and an agriculturally acceptable carrier.

3 . The method of claim 1 , wherein the seed is leguminous.

4 . The method of claim 3 , wherein the leguminous seed is a soybean seed.

5 . The method of claim 1 , wherein the seed is non-leguminous.

6 . The method of claim 5 , wherein the non-leguminous seed is a field crop seed.

7 . The method of claim 5 , wherein the non-leguminous seed is a corn seed.

8 . The method of claim 5 , wherein the non-leguminous seed is a vegetable crop seed.

9 . The method of claim 1 , wherein the seed is treated with the plant signal molecule at least 9 months prior to planting.

10 . The method of claim 1 , wherein the seed is treated with the plant signal molecule at least 12 months prior to planting.

11 . The method of claim 1 , wherein the seed is treated with the plant signal molecule at least 2 years prior to planting.

12 . The method of claim 1 , further comprising contacting the seed with at least one lipo-chitooligosaccharide.

13 . The method of claim 1 , further comprising contacting the seed with at least one lipo-chitooligosaccharide isolated and/or purified from a species of Rhizobia selected from the group consisting of Bradyrhizobium spp., Rhizobium spp., Sinorhizobium spp. and Azorhizobium spp.

14 . The method of claim 1 , further comprising contacting the seed with at least one lipo-chitooligosaccharide isolated and/or purified from Bradyrhizobium japonicum.

15 . The method of claim 1 , further comprising contacting the seed with at least one lipo-chitooligosaccharide isolated and/or purified from an arbuscular mycorrhizal fungus.

16 . The method of claim 1 , further comprising contacting the seed with at least one synthetic lipo-chitooligosaccharide.

17 . The method of claim 1 , further comprising contacting the seed with at least one recombinant lipo-chitooligosaccharide.

18 . The method of claim 1 , further comprising contacting the seed with at least one phosphate solubilising microorganism.

19 . The method of claim 1 , further comprising contacting the seed with one or more strains of Penicillium.

20 . The method of claim 1 , further comprising contacting the seed with one or more strains of P. bilaiae.

21 . The method of claim 1 , further comprising contacting the seed with one or more strains of P. gaestrivorus.

22 . The method of claim 1 , further comprising contacting the seed with one or more strains of Rhizobium.

23 . The method of claim 1 , further comprising contacting the seed with one or more strains of R. leguminosarum.

24 . The method of claim 1 , further comprising contacting the seed with one or more strains of Sinorhizobium.

25 . The method of claim 1 , further comprising contacting the seed with one or more strains of S. meliloti.

26 . The method of claim 1 , further comprising contacting the seed with one or more strains of Bradyrhizobium.

27 . The method of claim 1 , further comprising contacting the seed with one or more strains of B. japonicum.

Assignees

• Novozymes Bioag As

Inventors

• Smith R Stewart
• Habib Ahsan
• Kosanke John

Classifications

• A01N31/06 Primary

  Oxygen or sulfur directly attached to a cycloaliphatic ring system · CPC title

• C05F11/08 Primary

  Organic fertilisers containing added bacterial cultures, mycelia or the like · CPC title

• A01N43/16 Primary

  with oxygen as the ring hetero atom · CPC title

• C05F11/00

  Other organic fertilisers · CPC title

• C05C11/00

  Other nitrogenous fertilisers · CPC title