▁and ▁the ▁potential ▁oil ▁yields ▁are ▁much ▁higher ▁than ▁from ▁plants . ▁ ▁Y ield ▁Fe ed stock ▁yield ▁efficiency ▁per ▁unit ▁area ▁affect s ▁the ▁feas ibility ▁of ▁r amp ing ▁up ▁production ▁to ▁the ▁huge ▁industrial ▁levels ▁required ▁to ▁power ▁a ▁significant ▁percentage ▁of ▁vehicles . ▁ ▁Al ga e ▁fuel ▁yields ▁have ▁not ▁yet ▁been ▁accur ately ▁determined , ▁but ▁DO E ▁is ▁reported ▁as ▁saying ▁that ▁alg ae ▁yield ▁ 3 0 ▁times ▁more ▁energy ▁per ▁a cre ▁than ▁land ▁cro ps ▁such ▁as ▁so y beans . ▁Y ield s ▁of ▁ 3 6 ▁t onnes / he ct are ▁are ▁considered ▁practical ▁by ▁Am i ▁Ben - Am ot z ▁of ▁the ▁Institute ▁of ▁Ocean ography ▁in ▁Ha ifa , ▁who ▁has ▁been ▁far ming ▁Al ga e ▁commer cially ▁for ▁over ▁ 2 0   year s . ▁ ▁J atro pha ▁has ▁been ▁c ited ▁as ▁a ▁high - y ield ▁source ▁of ▁b iod ies el ▁but ▁yields ▁are ▁highly ▁dependent ▁on ▁clim atic ▁and ▁soil ▁conditions . ▁The ▁estimates ▁at ▁the ▁low ▁end ▁put ▁the ▁yield ▁at ▁about ▁ 2 0 0   US   gal / acre ▁( 1 . 5 - 2 ▁t onnes ▁per ▁hect are ) ▁per ▁c rop ; ▁in ▁more ▁favor able ▁clim ates ▁two ▁or ▁more ▁cro ps ▁per ▁year ▁have ▁been ▁achieved . ▁It ▁is ▁grown ▁in ▁the ▁Philippines , ▁M ali ▁and ▁India , ▁is ▁dr ought - res istant , ▁and ▁can ▁share