IDENTIFICATION OF CLIMATIC RISKS FOR THE UPLAND RICE IN GOIAS STATE, BRAZIL

A water balance model was utilized to estimate risks of water stress t o which upland rice (Oriza saliva L.) is exposed when sown during the period of November-December in Dark Red and Yellow Red Latosols of Col as State. The regions with high climatic risk were characterized in ti me and space, utilizing a geographic information system. Results showe d that the more sowing is delayed, the greater the climatic risk, whic h increases from North to South and from West to East. Data also showe d a great precipitation variability in the State.