Hello
JAtropa is used for bio diesel production. I will give you a brief description. You can also refer jatropa and biodiesel on the same forum.
limate
Can withstand severe heat. Likes heating and doing well in warmer areas. When cold will drop its leaves. It can withstand light frost but not for prolonged periods. The older the tree the better it will withstand. Black frost will almost certainly kill young plants and severely damage older plants
Quality of the soil
Best in sandy well-drained soils. Can withstand very poor soils and grow in saline conditions All the actors in the Jatropha sector suggest, anyway, using organic fertilizer in order to obtain higher yield.
Irrigation
It handles dryness very well and it is possible to live almost entirely of humidity in the air. - See Cape Verde where rainfall is as low as 250 mm a year. Differences are expressed in what is optimum rainfall as some readings say 600 mm and some say 800 mm whilst some areas in India report good crops with rainfall of 1380 mm. Under irrigation 1 500 mm is given.
500 - 600 mm of rainfall is the limit. Below it the production depends on the local water condition in the ground
It will also stand for long periods without water - up to 2 years – and then grow again when rains occur again.
Crop density
References recommend spacing for hedgerows or soil conservation is 15cm - 25cm x 15cm-25cm in one or two rows respectively and 2m x 1.5m to 3m x 3mm for plantations. Thus there will be between 4,000 to 6,700 plants per km for a single hedgerow and double that when two rows are planted.
the plants need to produce side shoots for maximum sprouting and maximum flowers and seed. Between 90 and 120 Days top of all plants at 25 Cm. Cut the top off cleanly and cut top to produce 8 – 12 side branches.
It is considered good practice. In order to facilitate the harvesting, it is suggested to keep the tree less than 2 meters.
Seed production ranges from about 2 tons per hectare per year to over 12.5t/ha/year, after five years of growth
Regards
Ashwini