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US4388303A
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Method to reduce animal browsing damage to plants employing selenium compound
Assignee: BOARD OF REGENTS OF UNIVERSITY OF WASHINGTONTHE
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Filing: 1981-04-06
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Granted: 1983-06-14
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Expires: 2001-04-06
Abstract
Abstract A method to reduce animal browsing damage to plants comprises the step of inducing a nonphytotoxic dosage of selenium into the foliage of the plants at a level sufficient to repel animals. The method is particularly suited for use in reforestation of pines, firs, and other conifers. The selenium is systemically absorbed into the plants after application to the surrounding soil in the root zone. Selenium compounds having a valency of no more than 4+ are applied to the soil around the plants to induce absorption in a preferred method.
Inventors
- 👤 George G. Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:10
CPC Classifications
A; A01; A01N; A01N55/00; A01N59/00; A01N59/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
73 words
A method to reduce reforestation damage to evergreen seedlings caused by animal browsing comprising the step of applying a compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to the soil around a seedling to promote systemic absorption so that foliage of the seedling contains a level of selenium which repels animals but which is substantially nonphytotoxic to the seedling.
Claim 2
Independent Claim
73 words
A method to reduce reforestation damage to evergreen seedlings caused by animal browsing comprising the step of applying a compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to the soil around a seedling to promote systemic absorption so that foliage of the seedling contains a level of selenium which repels animals but which is substantially nonphytotoxic to the seedling.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the selenium compound is (NH 4 ) 2 SeO 3 .
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the selenium compound is SeO 2 .
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein the selenium compound is Na 2 SeO 3 .
Claim 6
Independent Claim
74 words
A method to reduce reforestation damage to conifer seedlings caused by animal browsing comprising the step of applying a compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to the soil around a conifer seedling to promote systemic absorption so that foliage of the seedling contains a level of selenium which repels animals but which is substantially nonphytotoxic to the seedling.
Claim 7
Independent Claim
74 words
A method to reduce reforestation damage to conifer seedlings caused by animal browsing comprising the step of applying a compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to the soil around a conifer seedling to promote systemic absorption so that foliage of the seedling contains a level of selenium which repels animals but which is substantially nonphytotoxic to the seedling.
Claim 8
Dependent Claim
17 words
The method of claim 5 wherein the selenium compound is (NH 4 ) 2 SeO 3 .
Claim 9
Dependent Claim
13 words
The method of claim 5 wherein the selenium compound is SeO 2 .
Claim 10
Dependent Claim
15 words
The method of claim 5 wherein the selenium compound is Na 2 SeO 3 .
Claim 11
Independent Claim
81 words
A method to reduce reforestation damage to Douglas fir seedlings caused by animal browsing comprising the step of applying a compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to the soil around a Douglas fir seedling to promote systemic absorption of selenium into the seedling so that foliage of the seedling contains a level of selenium which repels animals but which is substantially nonphytotoxic to the seedling.
Claim 12
Independent Claim
81 words
A method to reduce reforestation damage to Douglas fir seedlings caused by animal browsing comprising the step of applying a compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to the soil around a Douglas fir seedling to promote systemic absorption of selenium into the seedling so that foliage of the seedling contains a level of selenium which repels animals but which is substantially nonphytotoxic to the seedling.
Claim 13
Dependent Claim
17 words
The method of claim 9 wherein the selenium compound is (NH 4 ) 2 SeO 3 .
Claim 14
Dependent Claim
13 words
The method of claim 9 wherein the selenium compound is SeO 2 .
Claim 15
Dependent Claim
15 words
The method of claim 9 wherein the selenium compound is Na 2 SeO 3 .
Claim 16
Independent Claim
84 words
A method to reduce reforestation damage to a Douglas fir caused by animal browsing comprising the step of applying to the soil around the Douglas fir a selenium compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to promote systemic absorption of the selenium into the Douglas fir so that the foliage contains a level of selenium which repels animals from browsing but which is substantially nonphytotoxic to the Douglas fir.
Claim 17
Independent Claim
84 words
A method to reduce reforestation damage to a Douglas fir caused by animal browsing comprising the step of applying to the soil around the Douglas fir a selenium compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to promote systemic absorption of the selenium into the Douglas fir so that the foliage contains a level of selenium which repels animals from browsing but which is substantially nonphytotoxic to the Douglas fir.
Claim 18
Independent Claim
71 words
A method to reduce reforestation damage to Douglas fir caused by animal browsing comprising the step of applying a selenium compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to the soil around the Douglas fir to promote systemic absorption of the selenium into the Douglas fir so that the foliage contains between about 20-400 μg/g of selenium.
Claim 19
Independent Claim
71 words
A method to reduce reforestation damage to Douglas fir caused by animal browsing comprising the step of applying a selenium compound selected from the group consisting of Na 2 SeO 3 , (NH 4 ) 2 SeO 3 , and SeO 2 to the soil around the Douglas fir to promote systemic absorption of the selenium into the Douglas fir so that the foliage contains between about 20-400 μg/g of selenium.
References Cited (Backward Citations)
US3226291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |