Bautista, Eulito U.; Javier, Evelyn F. - East Asian Bureau of Economic Research (EABER) - 2005
maximize productivity and reduce costs. Varieties were introduced in three major periods : the pre-Green Revolution era … maximum yield potential of the varieties as well as in response to goals of higher productivity, greater efficiency, and, for … the need for greater efficiency and higher productivity. Although the first period has been characterized by single rice …