Book excerpt: Evolution of rice weed control practices and research: world perspective; Weeds of major economic importance in rice and yield lasses due to weed competition; Weed control practices as a component of rice production systems; Effects of hydrology, soil moisture regime, and fertility management on weed populations and their control in rice; Effects of stand establishment techniques on weed population in rice; The role of cropping systems on weeds in rice; Weed control technology in irrigated rice; Weed control technology in rainfed wetland rice; Importance rice weeds in Latin America; Weed control and rice production in Brazil.