TABLE 1 
Comparison Between Small Area Potato Estimation 
in New Brunswick and Large Area (Rapeseed) Estimation 
in the Peace River District 
1. Total Area Covered 
by DICS Tapes 
2. Size of Region N-S,EW.. 
(including non- 
agricultural) 
3. Total No. of Video 
displays analyzed. 
4. No. of Image Dates 
Used. 
5. No. of Signatures 
6. Stage of Growth 
7. Cloud/Haze Per Image 
8. Ground Segments 
9. Field Sizes 
10. Segment shapes 
ll. Survey Patterns 
12. Geography of area 
13. Crop of Interest 
New Brunswick 
2 700 sq. km. 
by 4 tapes 
180 x 80 km. 
12 
2 (max) 
2 (max) 
some flowering, 
full canopy 
In 1 of 8 (two years) 
62 
Ave. 10 hectares 
highly irregular 
highly irregular 
similar throughout 
in most segments 
TABLE 2 
Peace 
104 900 sq. km. 
by 29 tapes 
340 x 650 km. 
160+ 
7 (+ variations) 
widely variable 
In 8 of 29 (one year) 
50 
Most " 15 hectares 
regular, 3 sections 
regular, township? range 
highly variable 
in some segments only 
CIAS Crop Area Estimate Analysis Time 
No of No. of Sq. km. Sq. km. 
Data Segments Tapes Analyzed Time per hour 
Crop Dist. 4a Standard 30 2 37,750 8 hrs.l — 4719 
Peace River District DICS 
New Bruswick DICS 
72 29 
62 4 
4 Development time not included, 
104,900 
7,900 8 hrs. 9802 
60 hrs. 17502 
2 The difference results from smaller field sizes and density of segments in 
the New Brunswick potato growing area. 
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