I’m not sure what the number is per hectare, but annual estimates of Jatropha nut yield are between 0.5 and 12 tons. The number varies because Jatropha is grown in many places in the world, therefore growing conditions are variable. Generally, depending on soil quality and rainfall, it takes 2 – 5 years before the nuts (and the desired oil inside of them) are ready for harvesting.
For more information, check out Table 6 on page 36 of “Physic Nut Jatropha curcas L.” by Joachim Heller:
*In India, there is a 3 ton (3,000kg) Jatropha yield per hectare.
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