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About the Project |
Finding
and Demonstrating Ways of Better Managing the Land
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Agricultural
production can have negative impacts on the environment, and there is
considerable concern as to the sustainability of conventional land-use
practices on arable land in Northern and Central Europe. Previous and
current applied research studies have demonstrated the environmental damage
that may result from unsustainable use of land resources, particularly
in overcultivation of arable soils. Conventional land preparation and
crop agronomy requires many field operations, especially for winter cereals
in the UK and sugar beet in Belgium. Such conventional tillage is associated
with aggregate breakdown, which significantly increases soil erosion susceptibility,
and surface sealing and capping that encourages production of surface
runoff. These two facts combine to give high soil losses, high sediment
concentrations and high runoff volumes. The eroded sediment may carry
chemical contaminants, which are then transported to water bodies in which
quality is compromised by the turbidity caused by particulate matter.
Chemicals in the run-off also pollute these water bodies. Many studies
have shown the sensitivity of aquatic ecosystems (flora and fauna) to
even low levels of water pollution by sediment and its associated contaminants.
Much is known about the principles behind soil conservation practices.
However, there is a considerable gap between what is known in principle
and what is applied in practice. |
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SOWAP 2005 |
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