US4581056A
Expired / Lapsed
US
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Synergistic senescence delaying foliar fertilizer composition and method of using same to delay senescence in field crops
Assignee: University of Michigan (System)
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Filing: 1983-05-11
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Granted: 1986-04-08
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Expires: 2003-05-11
Abstract
Abstract A composition and method for delaying the onset of senescence in certain crop plants by incorporation of one or more cytokinins in a foliar fertilizer composition containing one or more nutrients such as nitrogen and applying same to the foliage of plants.
Inventors
- 👤 Larry D. Nooden
- 👤 Ramon L. Garcia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:42
CPC Classifications
C; C05; C05F; C05F11/00; C05F11/10
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
53 words
An improved aqueous foliar fertilizer composition of the type which is applied to the foliage of plants, said composition comprising one or more micro and/or macronutrients, and a synergistically senescence-delaying effective amount of one or more cytokinins, and pH being adjusted to be within a range of from about 4.5 to about 8.5.
Claim 2
Dependent Claim
53 words
An improved aqueous foliar fertilizer composition of the type which is applied to the foliage of plants, said composition comprising one or more micro and/or macronutrients, and a synergistically senescence-delaying effective amount of one or more cytokinins, and pH being adjusted to be within a range of from about 4.5 to about 8.5.
Claim 3
Dependent Claim
23 words
A composition of claim 1 which further comprises one or more macronutrients selected from the group consisting of phosphorus, potassium, sulfur and nitrogen.
Claim 4
Dependent Claim
32 words
A composition of claim 1 wherein said one or more sources of nitrogen are selected from the group consisting of urea, ammonium salts, nitrate salts and water-soluble urea and formaldehyde condensation products.
Claim 5
Dependent Claim
23 words
A composition of claim 3 wherein said source of nitrogen is selected from the group consisting of urea, ammonium salts and nitrate salts.
Claim 6
Dependent Claim
13 words
A composition according to claim 4 wherein said source of nitrogen is urea.
Claim 7
Dependent Claim
31 words
A composition of claim 1 wherein said amount of said one or more cytokinins is from about 0.0001 to about 10 weight percent based on the total weight of the composition.
Claim 8
Dependent Claim
17 words
A composition of claim 6 wherein said amount is from about 0.01 to about 2 weight percent.
Claim 9
Dependent Claim
31 words
A composition of claim 7 wherein said amount is from about 0.05 to about 1 weight percent, and said pH being within a range of from about 5.5 to about 7.5.
Claim 10
Dependent Claim
10 words
A composition of claim 8 wherein R 1 is hydrogen.
Claim 11
Dependent Claim
23 words
A composition of claim 11 wherein R 2 is substituted or unsubstituted alkyl or alkenyl having from 1 to about 7 carbon atoms.
Claim 12
Dependent Claim
18 words
A composition of claim 10 wherein said permissible substituents are one or more hydroxy, aryl, heterocylic, or halo.
Claim 13
Dependent Claim
19 words
A composition of claim 11 wherein R 3 , R 4 and R 5 are individually hydrogen or methyl.
Claim 14
Dependent Claim
16 words
A composition of claim 11 wherein R 3 , R 4 and R 5 are hydrogen.
Claim 15
Dependent Claim
24 words
A composition of claim 13 wherein said one or more cytokinins are selected from the group consisting of zeatin, kinetin, benzyladenine, methylaminopurine, and dimethylallylpurine.
Claim 16
Dependent Claim
10 words
A composition of claim 14 wherein said cytokinin is benzyladenine.
Claim 17
Dependent Claim
96 words
A composition of claim 1 wherein said one or more cytokinins are selected from the group consisting of benzimidazoles, N-substituted thioureas, N-substituted ureas, N,N'-disubstituted ureas, N,N'-disubstituted thioureas, and compounds of the formulas: ##STR2## wherein: R 1 R 2 are the same or different and are hydrogen, or substituted or unsubstituted alkyl or alkenyl having from 1 to about 10 carbon atoms wherein permissible substituents are one or more hydroxy, halo, cycloalkyl, cycloalkenyl, alkanyl, aralkyl or heterocyclic; R 3 is hydrogen, alkyl, aryl, ribosyl or glycosyl; and R 4 and R 5 are individually hydrogen or alkyl.
Claim 18
Dependent Claim
20 words
A composition of claim 16 wherein said cytokinins are selected from the group consisting of compounds of the formula: ##STR3##
Claim 19
Dependent Claim
24 words
A composition of claim 16 wherein said one or more cytokinins are selected from the group consisting of N-substituted urea and N,N-disubstituted urea compounds.
Claim 20
Dependent Claim
11 words
A composition of claim 18 wherein said urea compound is diphenylurea.
Claim 21
Dependent Claim
25 words
A method of delaying the onset of senescence in plants, which comprises treating the foliage of said plant with a composition according to claim 1.
Claim 22
Dependent Claim
29 words
A method of claim 20 wherein said composition is applied to the foliage of said plant at anytime during the period from just before the onset of senescence harvesting.
Claim 23
Dependent Claim
14 words
A method of claim 20 wherein said composition further comprises one or more auxins.
Claim 24
Dependent Claim
31 words
A method of claim 20 wherein said plant is selected from the group consisting of a legume crop, a cereal grain crop, vegetable crops, forage crops, fiber crops and forest crops.
Claim 25
Dependent Claim
12 words
A method of claim 23 wherein said plant is a legume crop.
Claim 26
Dependent Claim
10 words
A method of claim 23 wherein said plant is soybean.
Claim 27
Dependent Claim
13 words
A method of claim 23 wherein said plant is a cereal grain crop.
Claim 28
Dependent Claim
12 words
A method of claim 26 wherein said cereal grain crop is corn.
Claim 29
Dependent Claim
12 words
A method of claim 26 wherein said cereal grain crop is wheat.
Claim 30
Dependent Claim
12 words
A method of claim 23 wherein said plant is a vegetable crop.
Claim 31
Dependent Claim
12 words
A method of claim 23 wherein said plant is a forage crop.
Claim 32
Dependent Claim
12 words
A method of claim 23 wherein said plant is a fiber crop.
Claim 33
Dependent Claim
12 words
A method of claim 23 wherein said plant is a forest crop.
Claim 34
Dependent Claim
95 words
A composition capable of being applied as a foliar spray fertilizer, said composition comprising a solution of the following constituents: a. H 2 O: from about 25 to about 90% (by weight); b. Nitrogen: from about 0.5 to about 50% (% Nitrogen by weight); c. Phosphorus: from about 0.5 to about 35% (P 2 O 5 ) by weight); d. Potassium: from about 0.5 to about 30% (K 2 O by weight); e. Sulfur: from about 0.5 to about 10% (S by weight); and f. One or more cytokinins: from about 0.0001 to about 10%.
Claim 35
Dependent Claim
95 words
A composition capable of being applied as a foliar spray fertilizer, said composition comprising a solution of the following constituents: a. H 2 O: from about 25 to about 90% (by weight); b. Nitrogen: from about 0.5 to about 50% (% Nitrogen by weight); c. Phosphorus: from about 0.5 to about 35% (P 2 O 5 ) by weight); d. Potassium: from about 0.5 to about 30% (K 2 O by weight); e. Sulfur: from about 0.5 to about 10% (S by weight); and f. One or more cytokinins: from about 0.0001 to about 10%.
Claim 36
Dependent Claim
26 words
The composition of claim 33 containing at least one micronutrient selected from the group consisting of boron, zinc, iron, manganese and copper present in nominal amount.
Claim 37
Dependent Claim
12 words
The composition of claim 33 which further comprises one or more auxins.
Claim 38
Dependent Claim
22 words
A composition of claim 35 wherein said auxins are selected from the group consisting of 2,4-dichlorophenoxyacetic acid, indoleacetic acid and naphthaleneacetic acid.
Claim 39
Dependent Claim
14 words
A composition of claim 36 wherein said auxin is 2,4-dichlorophenoxyacetic acid or napthaleneacetic acid.
Claim 40
Dependent Claim
11 words
A composition of claim 37 wherein said auxin is naphthaleneacetic acid.
References Cited (Backward Citations)
US4340765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |