TY - REP AU - White,J.W. AU - Grace,P. AU - White,J.W.|Grace,P. TI - Challenges in modeling extremes of wheat and maize yields in the tropics T2 - CIMMYT NRG-GIS Series SN - 970-648-47-1 SN - 1405-7484 PY - 2000/// CY - Mexico, DF (Mexico) PB - CIMMYT KW - Developing Countries KW - Environmental factors KW - Plant production KW - Simulation models KW - Triticum KW - AGROVOC KW - Zea mays KW - Yields KW - CIMMYT N2 - Simulating maize or wheat crop performance in extreme environments presents special challenges for crop modelers. However, such conditions are of relevance for a range of problems facing researchers both in developed and developing countries. This paper provides background on why modelers should consider high and low yield cropping circumstances and identifies challenges in work targeted to such environments ER -