Drylands constitute approximately 40% of the Earth's terrestrial surface, and are home to more than 2 billion people. These arid areas, including such diverse ecosystems as deserts, savannahs and tropical dry forests, are often characterized by population growth, over-exploitation, drought and desertification that lead to reductions in crop productivity. The sustainable production of food in regions where traditional or conventional methods of agriculture are difficult or impossible to implement can be ensured by developing agrotechnologies and biotechnologies. This track of study provides students with the tools to address these issues by carrying out cutting-edge research in extensive and intensive agriculture.