▁a ▁pre domin antly ▁p addy ▁cultiv ation - based ▁agricult ural ▁district . ▁The ▁area ▁under ▁p addy ▁cultiv ation ▁in ▁ 2 0 1 0 - 1 1 ▁was ▁ 2 4 9 , 0 0 0 ▁hect ares ▁of ▁land . ▁P addy ▁is ▁grown ▁in ▁do , ▁s una ▁and ▁s ali ▁classes ▁of ▁land . ▁There ▁is ▁double ▁to ▁triple ▁cro pping ▁system ▁for ▁p addy ▁cultiv ation . ▁Other ▁cro ps ▁grown ▁in ▁Bir b hum ▁are ▁gram , ▁mas uri , ▁pe as , ▁whe at , ▁lin seed , ▁k hes ari , ▁til , ▁sugar c ane ▁and ▁occasionally ▁cot ton . ▁ 1 9 2 , 4 7 0 ▁hect ares ▁of ▁cultiv able ▁land ▁is ▁under ▁ir rig ation ▁by ▁different ▁sources , ▁such ▁as ▁can als , ▁t anks , ▁river ▁lift ▁ir rig ation ▁and ▁different ▁types ▁of ▁tub ew ells . ▁In ▁ 2 0 0 9 - 1 0 , ▁ 1 5 8 , 3 8 0 ▁hect ares ▁were ▁ir rig ated ▁by ▁canal ▁water . ▁There ▁are ▁such ▁major ▁ir rig ation ▁projects ▁as ▁May ur ak sh i ▁and ▁Hij li . ▁Other ▁rivers ▁such ▁as ▁A jo y , ▁Bra h man i , ▁K usk urn i , ▁D war aka , ▁H ing la ▁and ▁Kop ai ▁are ▁also ▁helpful ▁for ▁ir rig ation ▁in ▁the ▁district . ▁ ▁Vari ous ▁agricult ure ▁development ▁work ▁has ▁been ▁initi ated ▁since ▁March