Biocomposting of Jatropha De-oiled Cake

Jatropha curcus is receiving a lot of attention as biofuel energy crop. In addition to seed oil, it also produces wood, fruit shells, seed husks and press cake. The de-oiled seed cake of Jatropha is a major by-product of biodiesel extraction process, which is rich in organic matter. In the present study, two combinations with Jatropha de-oiled cake were taken for the preparation of bio compost and they were assessed for their macro and micro nutrient content, which can be supplemented to the plants for their nutritional requirement. It was found that both composts were having the desired level of nutrient content. It was concluded that these biocompost made from waste de-ioled cake of Jatropha can be used as a valuable source of stable organic matter and major nutrients for plants.