International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004 
  
5.2 — Variations of agricultural production 
On graph 3 and 4, the percentages of cocoa production was 
greater (10.78 %) from 1995 to 1997 and smaller (8.98 %) 
from 1997 to 2002. The trend is the same for cassava. We can 
conclude that there was reduction of agricultural production of 
the households due to the project. The delimitation of the route 
of the project was not precise and the households were advised 
to abandon the area concerned because the width of pipeline 
was estimated from 30 to 60 meter and was very difficult to 
appreciate by the farmers. The production of palm trees 
increases from 4.19 % in 1995-1997 to 9.28 % in 1997-2002 
because in 1995-1997 the young plants were not in their 
production phase. The cassava+LC production has decreased 
simultaneously like cocoa. This shows that cocoa is the main 
cash product in that zone, and cassava+LC the main food 
crops. We also remark that high production of cassava+LC was 
due to the instability of the cocoa prices in the international 
market, and cassava+LC can be easily sold in the local market 
and provide money for socio-economic security of the 
households. 
Figure 3: Variation in agricultural productions 
between 1995 and 1997 
  
w 
© 
  
Percentages 
À 2 NN 
Co o +O nO 
| loeo eed 
  
        
   
   
  
Rn SRI 
Cocoa Palm tree Cassava * LC 
Different crops 
Wi Greater Bi Equal El Smaller 
Figure 4: Changes in agricultural Production 
  
between 1997 and 2002 
257 | 
Er 
20 | 
uv 
Sr 
z | | @ Greater 
e 107 Bl Equal 
o | D Smaller 
"| 
Cacao Palmtree | Cassavad C 
Different crops 
808 
5.3 — Variations in agricultural incomes 
Graphs 5 and 6 show that the cocoa incomes from cocoa were 
smaller (8.38 %) in 1995-1997 and higher (10.48 %) in 1997- 
2002. This is due to the high cocoa prices in the international 
market in 1999-2002. The impairment of the palm oil 
production is due to the supply and low demand in the local 
market. The income from cassava + LC decreased from 42.12 
% in 1995-1997 to 23.95 % in 1997-2002. We can estimate 
that this reduction of incomes from cassava is due to 
consumption or the reduction of cultivated areas. 
Fiqure 6: Variation in agricultural incomes 
  
between 1997 and 2002 
25 
201 
vo 
o > E 
8 154 
E & Greater 
2 10 BEqual | 
a L1 Smaller 
    
  
  
  
Cacao Palmtree ^ Cassava C 
Different crops 
Figure 5: Variation in agricultural incomes between 
   
  
1995 and 1997 
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