Previsual detection of stressed coniferous trees
<p>The study consisted of two parts: following the fade rates of killed field-grown Virginia pine (<u>Pinus virginiana</u> Mill.); and to study the effects of different stresses on seedlings.</p> <p> Foliage fade rates of killed field-grown Virginia pine varied with the...
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ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-410772021-05-05T05:40:24Z Previsual detection of stressed coniferous trees Alger, Larry Allen Entomology Heikkenen, Herman John Grayson, James McD. Bunce, George Edwin Aleida, S. P. foliage fade LD5655.V855 1974.A4 <p>The study consisted of two parts: following the fade rates of killed field-grown Virginia pine (<u>Pinus virginiana</u> Mill.); and to study the effects of different stresses on seedlings.</p> <p> Foliage fade rates of killed field-grown Virginia pine varied with the time of the year the tree was killed. Little variation in fade rates was found between years.</p> <p> Foliage of seedlings grown under stress due to: girdling; sevpring; defoliating; and drought, were studied by paper chromntographv, cross sectioning, and photography. The four pigments found appeared to decline proportionately as the foliege went from green to red. An error in technique resulted in uninterpretable needle cross sections. Photography using black and white, black and white infrared, color, and color infrared films gave no previsual detection of stress.</p> Master of Science 2014-03-14T21:29:15Z 2014-03-14T21:29:15Z 1974-05-06 2009-02-13 2009-02-13 2009-02-13 Thesis Text etd-02132009-172201 http://hdl.handle.net/10919/41077 http://scholar.lib.vt.edu/theses/available/etd-02132009-172201/ OCLC# 37591845 LD5655.V855_1974.A4.pdf In Copyright http://rightsstatements.org/vocab/InC/1.0/ 48 leaves BTD application/pdf application/pdf Virginia Tech |
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foliage fade LD5655.V855 1974.A4 |
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foliage fade LD5655.V855 1974.A4 Alger, Larry Allen Previsual detection of stressed coniferous trees |
description |
<p>The study consisted of two parts: following the fade
rates of killed field-grown Virginia pine (<u>Pinus virginiana</u> Mill.); and to study the effects of different stresses on
seedlings.</p>
<p>
Foliage fade rates of killed field-grown Virginia pine
varied with the time of the year the tree was killed.
Little variation in fade rates was found between years.</p>
<p>
Foliage of seedlings grown under stress due to:
girdling; sevpring; defoliating; and drought, were studied
by paper chromntographv, cross sectioning, and photography.
The four pigments found appeared to decline proportionately
as the foliege went from green to red. An error in
technique resulted in uninterpretable needle cross sections.
Photography using black and white, black and white infrared,
color, and color infrared films gave no previsual detection
of stress.</p> === Master of Science |
author2 |
Entomology |
author_facet |
Entomology Alger, Larry Allen |
author |
Alger, Larry Allen |
author_sort |
Alger, Larry Allen |
title |
Previsual detection of stressed coniferous trees |
title_short |
Previsual detection of stressed coniferous trees |
title_full |
Previsual detection of stressed coniferous trees |
title_fullStr |
Previsual detection of stressed coniferous trees |
title_full_unstemmed |
Previsual detection of stressed coniferous trees |
title_sort |
previsual detection of stressed coniferous trees |
publisher |
Virginia Tech |
publishDate |
2014 |
url |
http://hdl.handle.net/10919/41077 http://scholar.lib.vt.edu/theses/available/etd-02132009-172201/ |
work_keys_str_mv |
AT algerlarryallen previsualdetectionofstressedconiferoustrees |
_version_ |
1719402492183183360 |