What is agreed right now is that there's very little scientific information about large-scale production of jatropha oil.

CNN: Hedging their bets

Graham Prince, communications director of D1 Oils, says in some cases jatropha has been the victim of unsubstantiated hype.

CNN: Hedging their bets

He's currently farming 30 acres of jatropha, compared to 2, 500 acres of citrus.

CNN: Farmer turns to fruit tree to power tractors

People have been getting excited about jatropha for two or three years.

CNN: Hedging their bets

British-based jatropha producer D1 Oils is a pioneer of the industry.

CNN: Hedging their bets

Harry Boyle, analyst at New Energy Finance says his team won't be convinced of the potential of jatropha until it sees firm figures on the table.

CNN: Hedging their bets

In Corralejo, a wind farm is associated to a water desalination plant, while the University of La Laguna is developing a biofuel production project using jatropha curas seeds.

UNESCO: MEDIA SERVICES

The search for nonfood fuel plants in Asia has led researchers to jatropha, a tough, drought-resistant shrub that produces toxic but oily seeds that can be made into diesel.

FORBES: Magazine Article

"In the next four or five years, I think we'll increase not only the fruits per jatropha tree, but we'll also increase the amount of oil in each of those seeds, " Beckford said.

CNN: Farmer turns to fruit tree to power tractors