Fertigation composition, use and system

Patent metadata

Field	Value
Publication number	US-10117378-B2
Application number	US-201414787637-A
Country	US
Kind code	B2
Filing date	Apr 25, 2014
Priority date	Apr 30, 2013
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

Disclosed herein is a method for fertigation comprising: (a) providing an acidic mixture of water and a fertilizer dissolving agent; (b) contacting the acidic mixture with a fertilizer composition in fertigation equipment to dissolve the fertilizer composition and to form a fertigation composition; and (c) contacting the fertigation composition with soil. Also disclosed are a fertigation composition and a fertilizer system.

First claim

What is claimed is:

1. A method for fertigation comprising:
a) providing an acidic mixture comprising water and an acidic fertilizer dissolving agent;
b) contacting the acidic mixture with a NP, PK, or NPK fertilizer composition in fertigation equipment to dissolve the NP, PK, or NPK fertilizer composition and to form a NP, PK, or NPK fertigation composition; and
c) contacting the NP, PK, or NPK fertigation composition with soil,
wherein the acidic mixture comprises at least 100 ppm of Ca +2 .

2. The method for fertigation of claim 1 , further comprising cleaning the NP, PK, or NPK fertigation composition from the fertigation equipment.

3. The method for fertigation of claim 1 , wherein providing the acidic mixture further comprises:
a) filling a fertigation tank with water to a required level;
b) checking the pH and the calcium content of the water to determine the pH and the calcium content of the acidic mixture;
c) adding the fertilizer dissolving agent; and
d) repeating steps b and c, as necessary, until a pH of the acidic mixture is from 5.0 to 9.5 has been reached.

4. The method for fertigation of claim 1 , wherein contacting the acidic mixture with the NP, PK, or NPK fertilizer composition further comprises:
a) resting the NP, PK, or NPK fertigation composition for a period of time ranging from about 8 hrs to about 36 hrs; and
b) mixing the NP, PK, or NPK fertigation composition in the fertigation tank for a period of time ranging from about 30 minutes to about 90 minutes.

5. The method for fertigation of claim 1 , wherein contacting the NP, PK, or NPK fertigation composition with soil further comprises:
a) dispensing the NP, PK, or NPK fertigation composition in dosages; and
b) charging the NP, PK, or NPK fertigation composition to an irrigation line.

6. The method for fertigation of claim 2 , wherein cleaning the NP, PK, or NPK fertigation composition further comprises:
a) flushing an irrigation line with water; and
b) sending the NP, PK, or NPK fertigation composition to an irrigation line.

7. The method for fertigation of claim 1 , wherein
a) the NP, PK, or NPK fertilizer composition is present in an amount ranging from about 10 wt % to about 50 wt %, based on the NP, PK, or NPK fertigation composition;
b) the fertilizer dissolving agent is present in an amount ranging from about 2 wt % to about 88 wt %, based on the NP, PK, or NPK fertigation composition; and
c) water is present in an amount ranging from about 2 wt % to about 88 wt %, based on the NP, PK, or NPK fertigation composition.

8. The method for fertigation of claim 1 , wherein the fertilizer dissolving agent comprises hydrochloric acid, nitric acid, phosphoric acid, or sulfuric acid or a combination thereof.

9. The method for fertigation of claim 1 , wherein the fertilizer dissolving agent is phosphoric acid, or sulfuric acid or a combination thereof.

10. The method for fertigation of claim 1 , wherein the fertilizer dissolving agent is sulfuric acid.

11. The method for fertigation of claim 1 , wherein the fertilizer dissolving agent does not comprise hydrochloric acid or nitric acid.

12. The method for fertigation of claim 1 , wherein the fertigation equipment comprises an irrigation tank or a portable fertigation tank.

13. The method of claim 1 , wherein the fertigation equipment used for carrying out the method comprises:
a) a fertigation storage-mixing tank having an inlet for receiving one or more fertigation components from a source;
b) a fertigation pump having an inlet in fluid communication with the fertigation storage-mixing tank and having a pump discharge outlet;
c) a recirculation loop in fluid communication with said pump discharge outlet and having a terminal recirculation loop discharge end located within said storage-mixing tank and defining a recirculation discharge inlet; and
d) a fertigation feed line in fluid communication with said pump discharge outlet and having a terminal fertigation discharge end in communication with a downstream irrigation system;
wherein the equipment is selectively operable in a first and second operable configuration,
wherein, in the first operable configuration, the fertigation pump inlet is in fluid communication with the fertigation storage mixing tank; the recirculation loop is in fluid communication with the pump discharge outlet; and the fertigation feed line is not in fluid communication with the pump discharge outlet, such that the equipment is configured to recirculate one or more fertigation components within the fertigation storage-mixing tank; and
wherein, in the second operable configuration, the fertigation pump inlet is in fluid communication with the storage mixing tank; the recirculation loop is not in fluid communication with the pump discharge outlet; and the fertigation feed line is in fluid communication with the pump discharge outlet, such that the equipment is configured to feed a dosage of one or more fertigation components to the downstream irrigation system.

14. The method for fertigation of claim 1 , wherein the NP, PK, or NPK fertilizer composition is a NPK fertilizer composition, and wherein the NP, PK, or NPK fertigation composition is a NPK fertigation composition.

15. The method of claim 1 , wherein the acidic mixture comprises 200 to 1000 ppm of Ca +2 .

16. The method of claim 3 , wherein the pH is 7.5 to 9.5.

17. A NP, PK, or NPK fertigation composition comprising:
a) a NP, PK, or NPK fertilizer composition, wherein the NP, PK, or NPK fertilizer composition is present in an amount ranging from about 10 wt % to about 50 wt %, based on the NP, PK, or NPK fertigation composition;
b) a fertilizer dissolving agent comprising sulfuric acid or phosphoric acid, or a mixture thereof, wherein the fertilizer dissolving agent is present in an amount ranging from about 2 wt % to about 88 wt %, based on the NP, PK, or NPK fertigation composition; and
c) water, wherein the water is present in an amount ranging from about 2 wt % to about 88 wt %, based on the NP, PK, or NPK fertigation composition,
d) Ca +2 , wherein Ca +2 is present in an amount of 100 to 1000 ppm.

18. The NP, PK, or NPK fertigation composition of claim 17 , wherein the fertilizer dissolving agent does not comprise hydrochloric acid or nitric acid.

19. The NP, PK, or NPK fertigation composition of claim 17 , wherein the NP, PK, or NPK fertigation composition comprises a NP, PK, or NPK fertilizer composition comprising a NPK 11-29-19 Grade fertilizer composition, wherein the NP, PK, or NPK fertilizer composition is present in an amount of about 35 wt % to 60 wt %, based on the total weight of the NP, PK, or NPK fertigation composition; a fertilizer dissolving agent comprising sulfuric acid, wherein the fertilizer dissolving agent is present in an amount of about 4.5 wt % to 7.5 wt %, based on the total weight of the NP, PK, or NPK fertigation composition; and water in an amount of about 30 wt % to 50 wt %, based on the total weight of the NP, PK, or NPK fertigation composition.

20. The NP, PK, or NPK fertigation composition of claim 17 , wherein the NP, PK, or NPK fertigation composition comprises a NP, PK, or NPK fertilizer composition comprising a NPK 14-38-10 Grade fertilizer composition, wherein the NP, PK, or NPK fertilizer composition is present in an amount of about 30 wt % to 60 wt %, based on the total weight of the NP, PK, or NPK fertigation composition; a fertilizer dissolving agent comprising sulfuric acid, wherein the fertilizer dissolving agent is present in an am

Assignees

• Saudi Basic Ind Corp

Inventors

• Khaleel Mohamed Akasha M

Classifications

• C05G5/23

  Solutions · CPC title

• C05B17/00

  Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal · CPC title

• A01C23/042 Primary

  Adding fertiliser to watering systems · CPC title

• C05G3/0076

  Chemistry & Metallurgy · mapped topic