Revegetation in the context of "Clover"

Irrigation is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has been developed by many cultures around the world. Irrigation helps to grow crops, maintain landscapes, and revegetate disturbed soils in dry areas and during times of below-average rainfall. In addition to these uses, irrigation is also employed to protect crops from frost, suppress weed growth in grain fields, and prevent soil consolidation. It is also used to cool livestock, reduce dust, dispose of sewage, and support mining operations. Drainage, which involves the removal of surface and sub-surface water from a given location, is often studied in conjunction with irrigation.

Several methods of irrigation differ in how water is supplied to plants. Surface irrigation, also known as gravity irrigation, is the oldest form of irrigation and has been in use for thousands of years. In sprinkler irrigation, water is piped to one or more central locations within the field and distributed by overhead high-pressure water devices. Micro-irrigation is a system that distributes water under low pressure through a piped network and applies it as a small discharge to each plant. Micro-irrigation uses less pressure and water-flow than sprinkler irrigation. Drip irrigation delivers water directly to the root zone of plants. Subirrigation has been used in field crops in areas with high water tables for many years. It involves artificially raising the water table to moisten the soil below the root zone of plants.

Trees For Life is a registered charity that protects and restores land in the bush, farms, and urban areas of South Australia. It runs many programs, the oldest involving volunteers growing seeds into small plants for planting by farmers and other landholders. It was formed in 1981 and now has 2000 volunteers.

Environmental volunteers conduct a range of activities including environmental monitoring (e.g. wildlife); ecological restoration such as revegetation and weed removal, and educating others about the natural environment. They also participate in community based projects, improving footpaths, open spaces, and local amenities for the benefit of the local community and visitors. The uptake of environmental volunteering stems in part from the benefits for the volunteers themselves, such as improving social networks and developing a sense of place.