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Variation of N, P, K, Ca, Mg, Mn, Zn, and al in slash pine foliage
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Variation of N, P, K, Ca, Mg, Mn, Zn, and al in slash pine foliage
作者:
D. J. Mead,
W. L. Pritchett,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1974)
卷期:
Volume 5,
issue 4
页码: 291-301
ISSN:0010-3624
年代: 1974
DOI:10.1080/00103627409366508
出版商: Taylor & Francis Group
关键词: Seasonal variation;nutrient concentration;between‐tree‐variation;sampling
数据来源: Taylor
摘要:
The seasonal patterns of foliage nutrient concentrations and contents were monitored for two growing seasons in an 11‐year—oldPinus el1iottiistand. In the first growing season after needle initiation, N, P, K, Mg, and Zn concentrations decreased, but this was followed by an increase in the fall and winter months. Another drop in concentration of all elements, except P, occurred in the second growing season. Decreases in total contents indicated that this drop was a result of translocation to other tissues. In contrast to the mobile elements, the concentration and fascicle contents of Ca, Mn, and Al increased with aging of the needles.
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