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ESTIMATION PRE-SENESCENCE LAI OF WHEAT 
ESTIMATION POST-SENESCENCE LAI OF WHEAT 
y. A sn O RIV M ND U NDIV I I PVt I I QR3 (_ I TGAVt 
17 ) sn k N niv rvi ND I I NDIV rm PVI EU GR3 CCI TSAV1 
Figure 1. Performance of different vegetation indices (Vi's) as winter wheat 
LAI predictors, using the normalized deviation (DEVn.r.) from measured LAI as 
criterion. Results of Vi’s yielding significant differences between measured 
and estimated LAI are not displayed. Bar charts on the left and on the right 
refer to LAI estimation in the pre-senescence and post-senescence period 
respectively. The rows of bar charts refer to normalisation procedures for 
solar zenith angle. The reader is referred to the text for the explanation of 
the acronyms.