Natural Sequence Farming (NSF) is a method of landscape regeneration devised by the
Australian farmer,
Peter Andrews, in the 1970s.
The method involves implementing major earthworks on a given area of land that has been devastated by
deforestation
Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated ...
and general agricultural activities, to emulate the role of natural watercourses in an effort to reverse salinity, slow erosion and increase soil and water quality to enable native vegetation to regenerate and restore the
riparian zone
A riparian zone or riparian area is the interface between land and a river or stream. Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth. Plant habitats and communities along the river margins and banks a ...
.
The method does not require the use of artificial fertilisers or herbicides.
Flood control
Flood events may occur only once every 1 or 2 years; however, they have the ability to enhance or destroy a property. If the waters move too fast over bare land, then they can strip away topsoil and nutrients, leaving behind barren sands. By inserting barriers across creeks and encouraging water to spread outwards, the energy of a flood is reduced, the currents tend to deposit soil from upstream, and the water can soak into the land. This encourages grasses and fast-growing plants to take root.
The role of weeds
Ground cover protects the land from drying and baking, and also stabilises the land in future flood events. While rye and other grasses have long been seen as beneficial crops for grazing, other plants that have been considered weeds can improve the soil, augment the growth of other crops, and assist the diet of grazing animals. These 'weeds' should not be removed. When they die naturally, they should be cut for feed or used as
green manure.
Many 'weeds' thrive in only the regenerative cycle. Once the land recovers fertility, the weeds tend to be replaced naturally by trees.
Fraudulent NSF
Since the 1990s, there have been a number of cases where individuals or groups have sought financial gain through offering fraudulent versions of NSF.
See also
*
Salinity in Australia
Soil salinity and dryland salinity are two problems degrading the environment of Australia. Salinity is a concern in most states, but especially in the south-west of Western Australia.
*
Environment of Australia
The Australian environment ranges from virtually pristine Antarctic territory and rainforests to degraded industrial areas of major cities. Forty distinct ecoregions have been identified across the Australian mainland and islands. Central Aus ...
*
Conservation in Australia
Conservation in Australia is an issue of state and federal policy. Australia is one of the most biologically diverse countries in the world, with a large portion of species endemic to Australia. Preserving this wealth of biodiversity is importa ...
*
Irrigation in Australia
Irrigation is a widespread practice required in many areas of Australia, the driest inhabited continent, to supplement low rainfall with water from other sources to assist in growing crops and pasture. Overuse or poor management of irrigation ...
*
Climate change in Australia
Climate change in Australia has been a critical issue since the beginning of the 21st century. Australia is becoming hotter and more prone to extreme heat, bushfires, droughts, floods, and longer fire seasons because of climate change. Since t ...
*
Seawater Greenhouse
A seawater greenhouse is a greenhouse structure that enables the growth of crops and the production of fresh water in arid regions which constitute about one third of the earth's land area. This in response to the global water scarcity and peak ...
References
{{Reflist
Agriculture in Australia