So, under scarcity conditions and
climate change considerable effort has been devoted over time to introduce policies aiming to increase water efficiency based on
the assertion that more can be achieved with less water through better management. Better management usually refers to
improvement of water allocation and/or irrigation water efficiency. The former is closely related to adequate pricing, while the
latter depends on the type of irrigation technology, environmental conditions and the scheduling of water application.
Agricultural practices, such as soil management, irrigation and fertilizer application and disease and pest control are related with
the sustainable water management in agriculture and protection of the environment.