. ▁ ▁R ice ▁and ▁wet - field ▁agricult ure ▁were ▁also ▁introduced ▁to ▁Mad agas car , ▁the ▁Com or os , ▁and ▁the ▁coast ▁of ▁East ▁Africa ▁by ▁around ▁the ▁ 1 st ▁mill en ni um ▁AD ▁by ▁Aust ron esian ▁sett lers ▁from ▁the ▁Gre ater ▁S unda ▁Islands . ▁ ▁Korea ▁There ▁are ▁ten ▁arch ae olog ically ▁exc av ated ▁rice ▁p addy ▁fields ▁in ▁Korea . ▁The ▁two ▁oldest ▁are ▁the ▁Ok hy un ▁and ▁Y aum d ong ▁sites , ▁found ▁in ▁U ls an , ▁d ating ▁to ▁the ▁early ▁M um un ▁pot tery ▁period . ▁ ▁P addy ▁field ▁far ming ▁goes ▁back ▁thousands ▁of ▁years ▁in ▁Korea . ▁A ▁pit - house ▁at ▁the ▁D ae che on - ni ▁site ▁yield ed ▁carbon ized ▁rice ▁gra ins ▁and ▁radi oc ar bon ▁dates , ▁indicating ▁that ▁rice ▁cultiv ation ▁in ▁dry - fields ▁may ▁have ▁begun ▁as ▁early ▁as ▁the ▁Middle ▁Je ul mun ▁pot tery ▁period ▁( c . ▁ 3 5 0 0 – 2 0 0 0 ▁BC ) ▁in ▁the ▁Korean ▁Pen ins ula . ▁An cient ▁p addy ▁fields ▁have ▁been ▁carefully ▁un ear th ed ▁in ▁Korea ▁by ▁instit utes ▁such ▁as ▁Ky ung nam ▁University ▁Museum ▁( K UM ) ▁of ▁Mas an . ▁They ▁exc av ated ▁p addy ▁field ▁features ▁at ▁the ▁Ge um che on - ni ▁Site ▁near ▁Mir y ang , ▁South ▁G ye ongs ang ▁Province .