Agriculture is the backbone of many countries in the world, especially in Asia. More than half of the population is actively involved in agriculture. With a very high population growth rates in low- and middle-incomes countries, there will be more than 1 billion additional people in the world in 2015 than there were in 2000 (The World Bank group, 2001) as population grows from about 6 billion to 7.1 billion, and six out of seven of these people will live in low- and middle-income countries. To feed this growing population, agriculture must be intensifying by increasing the yield of the crops or by growing more than one crop per year. Land preparation must be done in shortest possible time for multiple-cropping, but in general the time available for land preparation is very short. Rotary tillers could be used for land preparation in the shortest possible time, as the required soil tilth is obtained in less number of passes.