Agriculture in this century is confronted with the challenges of ensuring global food security. Diminishing land and water resources, a rapid increase in population particularly in developing countries, and onset of climate change are the key limitations towards sustainability of the agriculture sector. The situation demands that we address the problems of agriculture using a system approach. This is a comprehensive book outlining the issues being faced by the agriculture sector world-wide. The book covers diversified topics including water scarcity, food security, international research collaboration, sustainable agriculture, soil erosion, weed management, micro nutrients, biotechnology, investment in research, sustainable viticulture and desertification.