Table 5. Estimated yield per hectare of mature and degraded forest cleared for biofuel feedstock cultivation (using a seed yield of 3.0 kg/liter).
| |
| |
Yield scenario
(tons/ha/yr)† |
Yield of crude jatropha oil per area
of mature forest cleared
(liters/ha) |
Yield of crude jatropha oil per area
of mature forest & fallow cleared
(liters/ha) |
| |
|
0.11 |
118 |
73 |
|
1.6 |
1718 |
1054 |
|
3.0 |
3222 |
1976 |
|
| |
†The first corresponds to average per-hectare yields in Kasama, where a limited market for seed exists. The second corresponds to published yields for
smallholders in neighboring Tanzania (des Grades 2007); Kamal Desai of Marli
also estimates 1.5–2.0 kg/tree by year 4 for contracted Zambian smallholders.
The 3.0 figure is the lower end of the yield range (presumed to correspond to
smallholder conditions) provided by van Eijck and Romijn (2008) for suboptimal
growing conditions in Tanzania.