, ▁and ▁har vest ▁the ▁c rop , ▁the ▁FA O ▁found ▁the ▁net ▁income ▁to ▁the ▁bet el ▁farm ▁owner ▁to ▁be ▁SL ▁R s . ▁ 7 3 5 ▁per ▁ ▁of ▁bet el ▁farm ▁every ▁ 6 ▁months ▁($ 4 0 ▁per ▁decimal ▁per ▁year , ▁or ▁$ 4 0 0 0 ▁per ▁a cre ▁per ▁year ). ▁According ▁to ▁FA O , ▁the ▁market ▁prices ▁for ▁bet el ▁leaves ▁vary ▁with ▁wet ▁and ▁dry ▁season ▁in ▁Sri ▁L anka , ▁and ▁in ▁ 2 0 1 0 ▁aver aged ▁SL ▁R s . ▁ 2 0 0 – 4 0 0 ▁per ▁ 1 0 0 0 ▁leaves ▁($ 1 . 8 2 ▁to ▁$ 3 . 6 4 ▁per ▁ 1 0 0 0 ▁leaves ). ▁The ▁FA O ▁study ▁assumes ▁no ▁losses ▁from ▁err atic ▁weather , ▁and ▁no ▁losses ▁during ▁storage ▁and ▁transport ation ▁of ▁per ish able ▁bet el ▁leaves . ▁These ▁losses ▁are ▁usually ▁between ▁ 3 5 % ▁to ▁ 7 0 %. ▁ ▁In ▁Bang l adesh , ▁bet el ▁leaf ▁far ming ▁yields ▁vary ▁by ▁region ▁and ▁v ine ▁variety . ▁In ▁one ▁region ▁where ▁bet el ▁leaf ▁cultiv ation ▁is ▁the ▁main ▁source ▁of ▁income ▁for ▁far mers , ▁a ▁total ▁of ▁ 2 , 8 2 5 ▁hect ares ▁of ▁land ▁is ▁dedicated ▁to ▁bet el ▁v ine ▁far ming . ▁The ▁average ▁production ▁cost ▁for ▁these ▁bet el ▁far ms ▁in ▁Bang l adesh ▁are ▁about ▁T k