▁O il ▁obtained ▁from ▁d ried ▁kernel ▁and ▁ash ▁from ▁burn ed ▁wood ▁can ▁be ▁used ▁for ▁soap ▁and ▁var n ish ▁production . ▁ ▁Social ▁and ▁historical ▁imp lications ▁In ▁southern ▁Cam ero on , ▁d ried ▁se eds ▁are ▁used ▁for ▁a ▁traditional ▁game ▁called ▁song ho . ▁In ▁Sierra ▁Le one ▁they ▁are ▁used ▁for ▁r att les ▁for ▁bund u ▁d ances ▁and ▁in ▁Niger ia ▁they ▁are ▁used ▁for ▁a ▁game ▁called ▁ok we . ▁ ▁Production ▁ ▁Cult iv ation ▁area ▁The ▁main ▁production ▁area ▁of ▁nj ang sa ▁is ▁the ▁hum id ▁forest ▁zone ▁of ▁Cam ero on . ▁ ▁The ▁tree ▁is ▁one ▁of ▁the ▁most ▁common ▁seed lings ▁seen ▁in ▁the ▁more ▁open ▁parts ▁of ▁the ▁forest . ▁Con sequently , ▁the ▁species ▁is ▁abund ant ▁in ▁new ▁far ming ▁clear ings . ▁During ▁these ▁clear ings , ▁far mers ▁kept ▁trees ▁from ▁this ▁species . ▁ ▁Y ield s ▁ ▁The ▁kernel ▁is ▁econom ically ▁the ▁most ▁important ▁part ▁of ▁the ▁tree . ▁They ▁are ▁collected ▁from ▁the ▁ground ▁between ▁September ▁and ▁October . ▁N j ang sa ▁trees ▁yield ▁f ruits ▁every ▁two ▁or ▁three ▁years , ▁some ▁trees ▁even ▁every ▁year . ▁ ▁Each ▁har vest ▁yields ▁up ▁to ▁ 9 0 0 ▁f ruits ▁and ▁an ▁average ▁of ▁ 7 2   kg ▁of ▁k ern els . ▁ ▁Cult iv ars ▁N j ang sa ▁is ▁a ▁new ▁c rop ▁and ▁is ▁act ively ▁domestic ated ▁only ▁since ▁