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US3958972A
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Chelates of 1,2-diaminocyclohexane tetrakis (methylene phosphonic acid) useful for supplying nutrient metals to plants growing in calcareous soil
Assignee: Monsanto Co
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Filing: 1974-07-05
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Granted: 1976-05-25
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Expires: 1994-07-05
Abstract
Abstract Iron, manganese and other essential nutrient metals are supplied to plants growing in calcareous soils by treating the soil with a metal chelating agent or by treating the plant and/or the soil with a metal chelate of said chelating agent, said chelating agent being a 1,2-diaminocyclohexane tetrakis(methylene phosphonic acid) compound.
Inventors
- 👤 Ralph W. Magin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:55
CPC Classifications
C; C05; C05D; C05D9/00; C05D9/02; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; Y; Y10; Y10S; Y10S71/00; Y10S71/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
59 words
A method of treating plants which comprises contacting the plant or the soil in which the plant is growing with an effective amount of a chelate of a polyvalent metal and a compound having the formula ##SPC2## wherein M is hydrogen, alkali metal, ammonium or amine, R is C 1-6 alkylene or alkylidene and n is 0 or 1.
Claim 2
Independent Claim
59 words
A method of treating plants which comprises contacting the plant or the soil in which the plant is growing with an effective amount of a chelate of a polyvalent metal and a compound having the formula ##SPC2## wherein M is hydrogen, alkali metal, ammonium or amine, R is C 1-6 alkylene or alkylidene and n is 0 or 1.
Claim 3
Dependent Claim
27 words
A method of claim 1 wherein from about 0.01 to 100 ppm of said polyvalent metal as said chelate is maintained in the soil supporting the plant.
Claim 4
Dependent Claim
23 words
A method of claim 1 wherein the polyvalent metal is selected from the group consisting of iron, nickel, zinc, manganese, cobalt and copper.
Claim 5
Dependent Claim
17 words
A method of claim 3 wherein n is 0 and said compound is 1,2-diaminocyclohexane tetrakis(methylene phosphonic acid).
Claim 6
Dependent Claim
22 words
A method of claim 3 wherein the mole ratio of said compound to said polyvalent metal is from about 0.5/1 to 2.0/1.
Claim 7
Dependent Claim
24 words
A method of claim 1 wherein a plant is treated by applying an aqueous solution of said chelate to the soil supporting said plant.
Claim 8
Dependent Claim
23 words
A method of claim 6 wherein the concentration of said polyvalent metal in said aqueous solution is from about 0.01 to 100 ppm.
Claim 9
Independent Claim
37 words
A method of correcting iron deficiency in a plant growing in an alkaline soil which comprises applying a ferric chelate of 1,2-diaminocyclohexane tetrakis(methylene phosphonic acid) to the plant in a quantity effective to correct the iron deficiency.
Claim 10
Independent Claim
37 words
A method of correcting iron deficiency in a plant growing in an alkaline soil which comprises applying a ferric chelate of 1,2-diaminocyclohexane tetrakis(methylene phosphonic acid) to the plant in a quantity effective to correct the iron deficiency.
Claim 11
Dependent Claim
21 words
A method of claim 8 wherein the ferric chelate is applied to the foliage of the plant as an aqueous solution.
Claim 12
Independent Claim
56 words
A method of supplying essential metals to plants growing in soil containing insoluble forms of said essential metals which comprises contacting said soil with an effective amount of a compound of the formula ##SPC3## wherein M is hydrogen, alkali metal, ammonium or amine, R is C 1-6 alkylene or alkylidene and n is 0 or 1.
Claim 13
Independent Claim
56 words
A method of supplying essential metals to plants growing in soil containing insoluble forms of said essential metals which comprises contacting said soil with an effective amount of a compound of the formula ##SPC3## wherein M is hydrogen, alkali metal, ammonium or amine, R is C 1-6 alkylene or alkylidene and n is 0 or 1.
Claim 14
Dependent Claim
17 words
A method of claim 10 wherein said compound is added to the soil as an aqueous solution.
Claim 15
Dependent Claim
17 words
A method of claim 10 wherein n is 0 and the compound is 1,2-diaminocyclohexane tetrakis(methylene phosphonic acid).
Claim 16
Dependent Claim
23 words
A method of claim 10 wherein said essential metal is selected from the group consisting of iron, nickel, zinc, manganese, cobalt and copper.
References Cited (Backward Citations)
US2917528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |