25 
29 
38 
47 
  
BIDIRECTIONAL REFLECTANCE FACTOR (A) 
  
  
  
n 
Maturity Stage 
    
  
  
  
  
  
   
Seedling 
Tillering 
Stem Extension 
Heading 
Mature 
  
+ 
1.65 
WAVELENGTH (uM) 
V 
E 
A 
LEN s 
/ JA SA i 
Ws Ux 
M 2 
1.9 : 2.4 
2.15 
Effect of maturity stage on the spectral reflectance of 
spring wheat canopies. 
A-