Spin, spin, spin! If the trees last 50 years okyah, then none of the products listed below can be harvested more than once in the plant's lifetime. Take away the flowers and you won't get a seed. Remove any bark or leaves and you compromise the seed crop, as for roots and stems every 50 years a bit of yellow die and poor quality wood after stripping - hardly worth thinking about.
Basically the only product worth any money is the oil from the seeds and a bit extra from seedcase fertiliser. The rest would be not be economically worthwhile for D1 to consider, leaving any leftover benefits from spent trees to their respective growers.
I am still interested to see the development of Jatropha as a fuel source but let's keep this realistic and specific to the company in question.
Freebies for Growers as a 50yr bonus:
Dark blue dye and wax can be produced from the bark of the Jatropha curcas plants
Jatropha plant Stem is used as a poor quality wood : Bio fuel
Jatropha curcas leaves helps in dressing the wound.
Jatropha roots help in making yellow dye
Juice of the flowers of Jatropha curcas and the Jatropha stem has very good medicinal properties