scholarly journals Estimating photosynthetic capacity from leaf reflectance and Chl fluorescence by coupling radiative transfer to a model for photosynthesis

2019 ◽  
Vol 223 (1) ◽  
pp. 487-500 ◽  
Author(s):  
Nastassia Vilfan ◽  
Christiaan Tol ◽  
Wouter Verhoef
Keyword(s):  
Radiative Transfer ◽  
Photosynthetic Capacity ◽  
Leaf Reflectance ◽  
Chl Fluorescence

Non-destructive estimation of potato leaf chlorophyll and protein contents from hyperspectral measurements using the PROSPECT radiative transfer model

2006 ◽  
Vol 86 (1) ◽  
pp. 279-291 ◽  
Author(s):  
E. J. Botha ◽  
B. J. Zebarth ◽  
B. Leblon
Keyword(s):  
Solanum Tuberosum ◽  
Radiative Transfer ◽  
Protein Content ◽  
Chlorophyll Content ◽  
Radiative Transfer Model ◽  
Transfer Model ◽  
Potato Leaf ◽  
Leaf Reflectance ◽  
Leaf Chlorophyll ◽  
N Status

Optimizing nitrogen (N) fertilization in potato (Solanum tuberosum L.) production by in-season measurements of potato N status may improve fertilizer N-use efficiency. Hyperspectral leaf reflectance and transmittance measurements can be used to assess potato N status by estimating leaf chlorophyll or N contents. This study evaluated the ability of the inverted PROSPECT radiative transfer model to predict leaf chlorophyll and N (as protein) contents. Trials were conducted with Russet Burbank and Shepody potato cultivars under different N fertility rates (0 to 300 kg N ha-1) in 2001 and 2002. Leaf reflectance and transmittance, leaf chlorophyll content, and leaf protein content were measured. Leaf chlorophyll and protein content correlated significantly (r = 0.16*, n = 584), but the relationship was strongly dependent on sampling date (r = 0.55* to 0.92*). Chlorophyll content was predicted with reasonable accuracy by the model, particularly in 2002. The low estimation accuracy in 2001 was probably related to sample variability induced by prolonged drought conditions. Protein content could not be predicted with any degree of accuracy by the model. The relative success of the PROSPECT model to predict chlorophyll content, and the good correlation between leaf chlorophyll and leaf N, suggests that it might be used as a component of a more complex leaf-canopy reflectance model to estimate chlorophyll content from reflectance spectra at the canopy level. Key words: Leaf reflectance, PROSPECT radiative transfer model, Solanum tuberosum

Changes in growth and photosynthetic capacity of rice with increased UV-B radiation

1991 ◽  
Vol 83 (3) ◽  
pp. 373-380 ◽  
Author(s):  
Alan H. Teramura ◽  
Lewis H. Ziska ◽  
A. Ester Sztein
Keyword(s):  
Photosynthetic Capacity

The Atmospheres of AGB Stars: Opacities, Radiative Transfer and Models

2008 ◽  
Vol 28 ◽  
pp. 67-74 ◽  
Author(s):  
B. Aringer ◽  
W. Nowotny ◽  
S. Höfner
Keyword(s):  
Radiative Transfer ◽  
Agb Stars
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