Results 211 to 220 of about 902,967 (255)
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Leaf Area and Absolute Leaf Water Content
Annals of Botany, 1970Leaf area was found to be an almost linear function of absolute leaf water content (that is fresh weight- dry weight) for several dicotyledonous genotypes. A closely similar relationship held for a given genotype in the same rooting medium despite increasing plant size and different treatments which resulted in leaves which were sometimes ...
A. P. HUGHES +2 more
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2013
This chapter briefly introduces the inversion algorithms used, discusses the product characteristics and validation results, and presents preliminary analyses and applications. The inversion algorithm was developed to estimate LAI from time-series remote sensing data using general regression neural networks (GRNNs).
Shunlin Liang +5 more
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This chapter briefly introduces the inversion algorithms used, discusses the product characteristics and validation results, and presents preliminary analyses and applications. The inversion algorithm was developed to estimate LAI from time-series remote sensing data using general regression neural networks (GRNNs).
Shunlin Liang +5 more
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International Journal of Remote Sensing, 1988
Abstract The geometrical structure of a vegetation canopy determines the amount of foliage presented to a sensor and the form of the relationship between reflectance and vegetation amount. The aim of this study was to develop a practical measure of vegetation amount that was sensitive to canopy geometry.
P. J. CURRAN, N. W. WARDLEY
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Abstract The geometrical structure of a vegetation canopy determines the amount of foliage presented to a sensor and the form of the relationship between reflectance and vegetation amount. The aim of this study was to develop a practical measure of vegetation amount that was sensitive to canopy geometry.
P. J. CURRAN, N. W. WARDLEY
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The American Naturalist, 2000
When a plant invests in construction of a leaf, the revenue-stream that accrues is shaped by three variables: first, the light-capture area per milligram dry mass invested, analogous to a potential rate of return on investment; second, the longevity of the leaf, analogous to the expected duration of the revenue stream; and third, a time-discount rate ...
Mark, Westoby +2 more
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When a plant invests in construction of a leaf, the revenue-stream that accrues is shaped by three variables: first, the light-capture area per milligram dry mass invested, analogous to a potential rate of return on investment; second, the longevity of the leaf, analogous to the expected duration of the revenue stream; and third, a time-discount rate ...
Mark, Westoby +2 more
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European Journal of Plant Pathology, 2003
Three field experiments were carried out with the bean cultivar Carioca Comum to investigate the relationships among visual and virtual severity of angular leaf spot (caused by Phaeoisariopsis griseola), area under visual and virtual disease progress curves (AUDPC), healthy leaf area index on any given day (HLAI), healthy leaf area duration (HAD ...
W.C. Jesus Junior +7 more
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Three field experiments were carried out with the bean cultivar Carioca Comum to investigate the relationships among visual and virtual severity of angular leaf spot (caused by Phaeoisariopsis griseola), area under visual and virtual disease progress curves (AUDPC), healthy leaf area index on any given day (HLAI), healthy leaf area duration (HAD ...
W.C. Jesus Junior +7 more
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Determining optimal leaf surface area
Russian Agricultural Sciences, 2007In field experiments with local application of various dosages of fertilizer on chernozem soils in northwestern Povolzhye, the optimal development of leaf area in millet plants of Kamyshinskoe 67 variety was revealed. A maximum leaf area of 58 500 m2/ha was noted in the phase of panicle emergence with the application of N155P88K143. Such a leaf surface
A. V. Solov’ev, M. K. Kayumov
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Estimating leaf area of plantain
Scientia Horticulturae, 1979Abstract The area of leaves of plantain (Musa acuminata × Musa balbisiana) was traced on graph paper. Then the length (L) and the maximum width (W) were measured. A known leaf area from each leaf was taken and both the sample and the remaining leaf blades were dried and weighed. Using known leaf area and their dry weights, the leaf area of each whole
J.C. Obiefuna, T.O.C. Ndubizu
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Leaf orientation and sunlit leaf area distribution in cotton
Agricultural and Forest Meteorology, 1997Abstract The diurnal leaf orientation behaviour of row-planted cotton plants (Gossypium hirsutum L. cv. ‘DES 119’) and its relationship to sunlit leaf area distribution at three stages of development were studied in the field. Electromagnetic digitizing was used for plant geometrical structure measurement for three periods of 2 h during the day ...
Thanisawanyangkura, S. +4 more
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Crop Science, 1974
The relationships of GCA (general combining ability) for total leaf area per plant and leaf area at leaf positions somewhat distal to the ear leaf to parental total leaf area per plant and leaf area at individual leaf positions were investigated by means of multiple regression procedures applied to data obtained from 10 homozygous inbred lines of corn (
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The relationships of GCA (general combining ability) for total leaf area per plant and leaf area at leaf positions somewhat distal to the ear leaf to parental total leaf area per plant and leaf area at individual leaf positions were investigated by means of multiple regression procedures applied to data obtained from 10 homozygous inbred lines of corn (
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