Thousands of years ago, people from east to south Asia settled throughout river deltas and domesticated wild rice and now it is the staple food for seventeen countries in Asia and the pacific, countries in Africa, seven countries in Latin, America and Caribbean and one is the near east.Rice is the life-line of Asia. More than 90% of the world's rice crop is produced here. Paddling is done in rice for easier transplanting and to reduce water infiltration. It destroys the soil physical structure, which... Mehr