01506nam a2200241 a 450000100080000000500110000800800410001902000180006010000210007824500510009926001080015030000140025849000410027250000810031352007730039465000090116765000100117665000120118665000170119865000130121565000150122870000210124312064822022-09-09       1996    bl uuuu     u00u1 u    #d  a971-22-0086-81 aCASTRO, E. M. de  aUpland rice in Brazilbproblems and prospects.  aIn: PIGGIN, C.; COURTOIS, B.; SCHMIT, V. (ed.). Upland rice research in partnership. Manila: IRRIc1996  ap. 71-78.  a(IRRI. Discussion paper series, 16).  aProceedings of the Upland Rice Consortium Workshop, 1996, Padang, Indonesia.  aUpland rice is the main rice cropping system in Brazil and represents 70% of the total rice cultivated area. Rice is present in all states, and considered the most important crop in the southern, west-central, and northern regions. While several rice cropping systems are practiced in Brazil, the most commonly used are the irrigated lowland rice, lowland rice, upland rainfed rice, and favored upland rainfed rice systems. Favored upland rainfed rice is cultivated under sprinkler irrigation or in regions with good rainfall distribution with no risk of water stress and represents about 20% of the total upland rice area. Upland rainfed rice is usually cultivated in areas with higher risks of drought spells and where artificial irrigation is not a common practice.  arice  aArroz  aCerrado  aOryza Sativa  aPesquisa  aTecnologia1 aVIEIRA, E. H. N.