Several different types of cultivated rice were found at Bashidang. In Chientao or Yenki Manchu district the Korean Colony extensively cultivated rice. They also introduced cultivated rice and millet. Oryza nivara is a wild progenitor of the cultivated rice "Oryza sativa". These species, however, can be crossed with cultivated rice. This genetically modified form of cultivated rice has, however, appeared on the rice market. Cambodia's cultivated rice land can be divided into three areas. The people at Bashidang cultivated rice, along with water caltrop and "Nelumbo nucifera". It contains 11 genera, including both cultivated rice ("Oryza") and wild rice ("Zizania").