Annual Oilseeds
Annual oilseeds can be incorporated into existing agricultural production systems as rotational crops or in some cases can be produced as primary crops on underutilized lands. The oils produced by these crops are not used as food products, but their seedcake fractions can be suitable for use in livestock feed. Camelina and Castor bean are two commercialized annual oilseed feedstock species, but others such as Cuphea and Crambe are also being studied for their potential application as viable rotational crops.
Perennial Oilseeds
Jatropha curcas is the most-publicized perennial oilseed species, but others such as Pongamia pinnata or Aleurites moluccana may eventually have uses in the advanced biofuel sector.