Compounds and methods for improving plant growth and crop yield

Patent metadata

Field	Value
Publication number	US-12016336-B2
Application number	US-202318115700-A
Country	US
Kind code	B2
Filing date	Feb 28, 2023
Priority date	Sep 1, 2020
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

The invention provides a compound of formula I:wherein X, Y, Z, R1, R2, and X+ have any of the values described in the specification. The compounds are useful to increase plant growth and/or to increase harvest yield.

First claim

What is claimed is:

1. A method comprising, increasing growth or harvest yield by providing H 2 S to a plant or a seed through degradation of a compound of formula I;

wherein:
Y is O;
Z is O;
R 1 is C 3 -alkyl, C 4 -alkyl, C 5 -alkyl, C 6 -alkyl, C 7 -alkyl, C 8 -alkyl, C 9 -alkyl, or C 10 -alkyl, and R 2 is C 3 -alkyl, C 4 -alkyl, C 5 -alkyl, C 6 -alkyl, C 7 -alkyl, C 8 -alkyl, C 9 -alkyl, or C 10 -alkyl, and
X + is a suitable cation
wherein the plant is a pea, lettuce, tomato, cucumber, green bean, broccoli, squash, beet, onion, sugar, corn, sugar beet, barley, oats, wheat, potato, soybean, or radish; and
wherein the seed is a seed of a plant selected from the group consisting of pea, lettuce, tomato, cucumber, green bean, broccoli, squash, beet, onion, sugar, sugar beet, barley, oats, wheat, potato, corn, soybean, and radish.

2. The method of claim 1 , wherein the growth or the harvest yield is increased by, contacting the plant with the compound of formula I.

3. The method of claim 1 , wherein the growth or the harvest yield for a plant that grows from a seed is increased by contacting the seed with a compound as described in claim 1 .

4. The method of claim 3 , wherein the seed is contacted with the compound prior to planting.

5. The method of claim 1 , wherein the growth or the harvest yield of the plant is increased by allowing the compound of formula I to degrade on or near the plant, or on or near a seed of the plant, so that H 2 S is provided to the plant or to the seed.

6. The method of claim 1 , wherein the compound is applied to soil wherein the plant or a seed of the plant has been planted or will be planted.

7. The method of claim 1 , wherein the compound releases H 2 S over a period of at least 7 days after contacting or applying.

8. The method of claim 1 , wherein the compound releases H 2 S over a period of at least 1 year after contacting or applying.

9. The method of claim 1 , wherein the compound is selected from the group consisting of:

wherein X + is a suitable cation.

10. The method of claim 1 , wherein X + is potassium, sodium, or triethyl ammonium.

11. The method of claim 1 , wherein X + is potassium or sodium.

12. The method of claim 1 , wherein X + is triethyl ammonium.

13. The method of claim 1 , wherein X + is an ammonium cation.

14. A method comprising, increasing growth or harvest yield by providing H 2 S to a plant or a seed through degradation of a compound of formula:

wherein X + is a suitable cation;
wherein the plant is a pea, lettuce, tomato, cucumber, green bean, broccoli, squash, beet, onion, sugar, corn, sugar beet, barley, oats, wheat, potato, soybean, or radish; and
wherein the seed is a seed of a plant selected from the group consisting of pea, lettuce, tomato, cucumber, green bean, broccoli, squash, beet, onion, sugar, corn, sugar beet, barley, oats, wheat, potato, soybean, and radish.

15. A method comprising, increasing growth or harvest yield by providing H 2 S to a plant or a seed through degradation of a compound of formula:

wherein X + is a suitable cation;
wherein the plant is a corn or soybean; and
wherein the seed is a seed of a plant selected from the group consisting of a corn and a soybean.

16. A method comprising, increasing harvest yield by providing H 2 S to a plant or a seed through degradation of a compound of formula:

wherein X + is a suitable cation;
wherein the plant is a pea, lettuce, tomato, cucumber, green bean, broccoli, squash, beet, onion, sugar, corn, sugar beet, barley, oats, wheat, potato, radish, or soybean; and
wherein the seed is a seed of a plant selected from the group consisting of pea, lettuce, tomato, cucumber, green bean, broccoli, squash, beet, onion, sugar, corn, sugar beet, barley, oats, wheat, potato, soybean, and radish.

17. A method for increasing the harvest yield of a plant comprising, contacting the plant with a compound of formula:

wherein X + is a suitable cation;
wherein the plant is a pea, lettuce, tomato, cucumber, green bean, broccoli, squash, beet, onion, sugar, corn, sugar beet, barley, oats, wheat, potato, soybean, or radish.

18. A method for increasing the harvest yield of a plant that grows from a seed, comprising contacting the seed with a compound of formula:

wherein X + is a suitable cation;
wherein the plant is a pea, lettuce, tomato, cucumber, green bean, broccoli, squash, beet, onion, sugar, corn, sugar beet, barley, oats, wheat, potato, soybean, or radish.

Assignees

• Univ Iowa Res Found

Inventors

• Bowden Ned B
• Carter Justin M
• Brown Eric M
• Ranasinghe Nimesh
• Paudel Arjun
• Irish Erin E

Classifications

• C07F9/6578

  having phosphorus and sulfur atoms with or without oxygen atoms, as ring hetero atoms · CPC title

• C07F9/657118

  non-condensed with carbocyclic rings or heterocyclic rings or ring systems · CPC title

• C07F9/06

  without P—C bonds · CPC title

• A01N57/16

  containing heterocyclic radicals · CPC title

• A01P21/00

  Plant growth regulators · CPC title