Agronomic research on crop response to nitrogen fertilizer suggests that a plateau function may be appropriate, but the plateau varies across fields and years. Available models that treat the plateau as a stochastic variable are not readily extendable to handle field or year random effects as...

This study discusses the potential for expanding cultivation of biofuel feedstock in Mozambique from several angles. Taking the case of sugarcane, it explores the potential to expand production, through exploring both biophysical factors and patterns of existing investment. We review recent...