Estimation of leaf nitrogen concentrations in Quercus robur L. using the CCM-200 portable chlorophyll meter for different patterns of vegetative growth and acorn production

The potential of the CCM-200 chlorophyll meter for providing accurate estimates of total nitrogen concentrations was studied from 2009 to 2011 using pedunculate oak (Quercus robur L.) leaves collected in a field trial near Zagreb, Croatia. A fertilization treatment carried out in early spring 2009 a...

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Bibliographic Details
Published in:New forests 2016-07, Vol.47 (4), p.513-527
Main Authors: Sever, Krunoslav, SaÅ¡a Bogdan, Željko Å kvorc, MaÅ¡a Zorana Ostrogović Sever, Jozo FranjiÄ
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Calibration
Chlorophyll
equations
field experimentation
Forestry
fruits
Growing season
Leaves
Life Sciences
Nitrogen
nitrogen content
Quercus robur
shoots
spring
Trees
vegetative growth
weather
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Summary:The potential of the CCM-200 chlorophyll meter for providing accurate estimates of total nitrogen concentrations was studied from 2009 to 2011 using pedunculate oak (Quercus robur L.) leaves collected in a field trial near Zagreb, Croatia. A fertilization treatment carried out in early spring 2009 and in variable weather conditions caused between-year differences in acorn yield and production of second and third flush shoots. A total of 10 linear calibration equations were constructed based on data from leaves sampled in early July (first flush leaves), in mid-August (second flush leaves) and in mid-September (first and second flush leaves). These equations reliably described (p 
ISSN:0169-4286
1573-5095
DOI:10.1007/s11056-016-9528-6