Indirect Measurement of Leaf Area Index in California North Coast Vineyards
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چکیده
منابع مشابه
Indirect Measurement of Leaf Area Index in California North Coast Vineyards
The performance of the LI-COR LAI-2000 Plant Canopy Analyzer (PCA) for indirect measurement of leaf area index (LAI) was evaluated in vineyards of Californiaʼs North Coast region. Twelve plots were established, representing vineyards of differing trellis, cultivar, and planting density. Mean LAI ranged from 0.5to 2.25-m2 leaf area per m2 ground area by direct measurement (defoliation). Indirect...
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18 Background and aims: Most optical devices for indirect measurement of leaf area 19 index (LAI) from canopy-transmitted light are tailored for homogeneous canopies, thus 20 limiting their application to discontinuous canopies such as vertically trained vineyards. 21 This study evaluates the influence of sun position on the reliability of LAI estimates 22 provided by a ceptometer and proposes ...
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متن کاملLeaf area index measurements
Leaf area index (LAI) is a key structural characteristic of forest ecosystems because of the role of green leaves in controlling many biological and physical processes in plant canopies. Accurate LA1 estimates are required in studies of ecophysiology, atmosphere-ecosystem interactions, and global change. The objective of this paper is to evaluate LA1 values obtained by several research teams us...
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ژورنال
عنوان ژورنال: HortScience
سال: 2004
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.39.2.236