Results 221 to 230 of about 233,577 (260)
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Radiation use efficiency of sugar beet in Northern France
European Journal of Agronomy, 1993Abstract Experiments were carried out on 4 to 6 genotypes of sugar beet ( Beta vulgaris L.) over three years in Northern France. The relationships between absorbed radiation and both dry matter production and sugar yield were studied. A linear model was shown to fit well with the experimental data.
Damay, N., Le Gouis, Jacques
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Efficiency of clouds on shortwave radiation using experimental data
Applied Energy, 2014Abstract An extended data set of ground-based measurements of shortwave radiation, and cloud optical depth (COD) has been used to evaluate the surface cloud radiative forcing (CRF) in the shortwave range under overcast conditions (confirmed with sky images) at Granada, Spain.
D. Mateos +5 more
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Radiation use efficiency of pearl millet in the Sahelian zone
Agricultural and Forest Meteorology, 1991Abstract The components of radiative transfer (incident, reflected and transmitted photosynthetic active radiation (PAR)) were continuously measured with amorphous silicon cells in a stand of pearl millet (Pennisetum glaucum (L.) R.Br.) grown under optimum conditions in Niger. These measurements were combined with biomass and leaf area index ( L )
A. Begue +3 more
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Assessment of photosynthetic radiation‐use efficiency with spectral reflectance
New Phytologist, 1995summaryReflectance changes at 531 nm, associated with the zeaxanthin‐antheraxanthin‐violaxanthin interconversion and the related thylakoid energization, are widespread among plant species. We evaluated an index based on 531 nm reflectance (‘PRI’, Photochemical Reflectance Index calculated as (R531− R570)/(R531+ R570)) as an indicator of efficiency of ...
JOSEP PEÑUELAS +2 more
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Radiation use efficiency of maize grown in a cool area
Field Crops Research, 1992Abstract The objective of this work was to check the validity of the model that assumes a linear relationship between intercepted photosynthetically active radiation (PAR) and maize dry matter production in a region characterized by a cool spring.
F.H. Andrade +3 more
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Radiation Interception, Radiation Use Efficiency and Crop Productivity
2016Photosynthesis is the set of processes whereby radiant energy is converted and stored as chemical energy in most plants, algae and cyanobacteria. This process depends on radiation, temperature and CO2 concentration. The maximum efficiency of the process is 6 % but it is usually well below.
Victor O. Sadras +2 more
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Effect of Specific Leaf Nitrogen on Radiation Use Efficiency and Growth of Sunflower
Crop Science, 1997Specific leaf nitrogen (SLN, g/m2) is knownto affect radiation use efficiency (RUE, g/MJ) in different crops. However, this association and importance have not been well established over a range of different nitrogen regimes for field‐grown sunflower (Helianthus annuus L.).
Bange, M.P. +2 more
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Radiation‐Use Efficiency among Grain Sorghum Cultivars and Plant Densities
Agronomy Journal, 1993AbstractRadiation‐use efficiency (RUE, g MJ−1) has often been used in many crop model equations to estimate total biomass and yield based on cumulative absorbed photosynthetically active radiation. Management practice effects on radiation‐use efficiency have not been well documented for grain sorghum [Sorghum bicolor (L.) Moench].
Rosenthal, W.D., Gerik, T.J., Wade, L.J.
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Radiation Use Efficiency: Evaluation of Cropping and Management Systems
Agronomy Journal, 2014Capture of solar radiation by plant canopies and conversion of this energy into biomass or grain has been described as radiation use efficiency. Radiation use efficiency (RUE) has been developed as a function of biomass accumulation and intercepted photosynthetically active radiation (IPAR) by the canopy and evaluated under conditions not limiting to ...
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Radiation Use Efficiency of Arrowleaf, Crimson, Rose, and Subterranean Clovers
Agronomy Journal, 2008Parameters describing the growth of cool‐season annual clovers are necessary for potential growth simulations, but have not yet been determined. Accordingly, the objective of this study was to quantify and compare the key parameter for biomass production, radiation use efficiency (RUE), for arrowleaf (Trifolium vesiculosum Savi.), crimson (T ...
James R. Kiniry, Gerald W. Evers
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