The best Jatropha curcas varieties available are-

A]Jatropha curcas.
B]Jatropha gossypifolia.
C]Jatropha multifida.
D]Jatropha tanjorensis.
E]Jatropha glandulifera.
F]Jatropha integerrima
D]Jatropha podagrica

1]Jatropha  reduce Global Warming by absorbing 2.8 tons of CO2 per
year, per acre, from Atmosphere.
2]Plant distance Of 2mX2m will give the best commercial value and the
plant poulation will be 2500/hect.
3]For making harvesting easy,it is better to keep the plant height
aroubd 2 mts.
4]The crop yield in 5th year will be 1.25 – 2.80 mt/hect in dry land
and 5.25 – 12.50 mt/hact in irrigation conditions.
5]Jatropha plants can yield 350- 375 gallons per hectare under dry land
cultivation.
6]The chemical composition in Jatropha curcas seed-
a] Moisture 6.20 %   b] Fat 38.00 %   c] Protein 18.00 %
d]Carbohydrates 17.00 %  e]Ash 5.30 % f]Fiber 15.50 %
7]The oil content is 26 – 30% and 50 – 60% in seed and in the kernel
respectively.
8]The oil contains 21% saturated fattyacids and 79% unsaturated fatty acids.
9]The chemical element in the seed [Cursin] which is poisonous for
human consumption.
10]the oil content ranges from 28% to 36% and the the average oil yield per hectare on avarage soil will be around 1.5-1.75 MT.

1. Jatropha curcas is become altenative for reducing air pollution.This we can understand like this-
2. It is shrub and it can grow in any type of soils including infertile       lands also.
3. This crop is not grazed upon by animals and we can grow this in low   rainfall areas also.
4. It become a interested subject starting from Agriculture   Universities/scientists toIndustrialists/farmers.
5. Germination percentage of mycorrhizal inoculated jatropha seed is more than 90% than seed without inoculation.
   Early flowering of 3-5 months observed by many scientists.
6. In the case of yield By raising the plantation with mycorrhizal inoculated seeds,there will be a 15%-25% increase in yield than plantation grown with non-inoculated jatropha seeds.