International Archives of Photogrammetry and Remote Sensing. Vol. XXXII Part 7C2, UNISPACE HI, Vienna. 1999 
59 
I5PR5 
UNISPACE III - ISPRS Workshop on 
“Resource Mapping from Space” 
9:00 am -12:00 pm, 22 July 1999, VIC Room B 
Vienna, Austria 
I5PRS 
vg$y 
Year 
County 
R.S. data (t/ha) 
Classical data (t/ha) 
Difference (t/ha) 
1991 
Bekes 
7.624 
7.57 
+ 
0.054 
1991 
Hajdu 
7.296 
7.34 
- 
0.044 
1991 
Szolnok 
7.070 
7.06 
+ 
0.010 
1992 
Bekes 
4.329 
3.47 
+ 
0.859 
1992 
Hajdu 
4.452 
4.12 
+ 
0.332 
1992 
Szolnok 
3.138 
3.39 
- 
0.252 
1993 
Bekes 
3.600 
3.25 
+ 
0.350 
1993 
Szolnok 
2.768 
2.23 
4- 
0.538 
Table 1. Estimated county yields for com in 1991-93; high resolution process using high and low resolution satellite data together