Not AvailableRice (Oryza sativa L.) is grown under a range of hydrological regimes from the unflooded
rainfed, through the rainfed and irrigated flooded, to the deep water and floating cultivation
systems. It is the staple food for a large proportion of the world’s population. The geographic
range of worldwide rice production is from the equator to the temperate areas of northern
Japan and southern Australia and from sea level to attributes of more than 2500 m.
The anaerobic soil environment created by flood irrigation of lowland rice creates
a unique and challenging environment for the efficient management of soil and fertilizer
nutrients. Supplying required essential nutrients in adequate rates, sources, application
methods, and application times are important factors that influence the productivity and
sustainability of rice.Not Availabl
