Physiology of cashew plants grown under adverse conditions

the cashew (anacardium occidentale l.) is an important crop for semi-arid agriculture and contributes to the social and economical development of several world regions, including the northeast of brazil. in spite of its importance, very few studies aim to understand the effects of abiotic stresses on the development and yield of the cashew. this review covers the research on cashew ecophysiology, with emphasis on the effects of water and salt stress on its development, mineral nutrition and gas exchange processes. the results presented here were obtained at different plant growth stages and under different environmental conditions of soil and climate. the ecophysiological significance of this information is also discussed.