1 
Symposi 
An evi 
for wh 
A.Giovac 
Aquater S.p 
ABSTRACT: 
efficient i 
phenologies 
obtained us 
heading phe 
1 INTRODUCI 
Crop produc 
sufficient 
strategic i 
contribute 
reliability 
cultivated 
measuring t 
crop yield. 
Generally 
remote ser 
different 
i 
spectral 
combination 
the visib 
electromagn 
Extensive 
relationshi 
sties and 
relate spei 
matter acc\ 
Aasc.J.K. e 
spectral v< 
yield of wl 
specific pi 
1980; Daug 
have analy2 
area index 
vegetation 
1984). 
This stud 
final grai 
vegetation 
The objecti 
- to ver: 
used to for 
wheat; 
- to sel< 
in relation 
the crop. 
2 MATERIAL 
The experirr 
30 fields o