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Bodies of water react very sensitively to nutrient input. If the
nitrate and phosphate input is too high, it can lead
to eutrophication and an ensuing overgrowth of algae. The
impact of these nutrients on the surface water has been lowered
by expanding canalization and sewage treatment plants. Because of
this, the so-called diffuse input from agriculture has become the
center of discussion.
In addition to nutrient input the risk of micro organism input, primarily caused by the use of slurry as an organic fertilizer, has to be focussed. Several of the measures to reduce nutrient input such as the cultivation of catch crops with mulching or undersown crops afterwards gain a high level of importance as well as measures to reduce the input of micro organisms. This are for example an optimized use of slurry in line with exact nutrient requirements. Besides, actual analyses results confirm the reduction of slurry’s micro organism concentration by storing it over a period of several months.
All of these mentioned measures have to be discussed with the farmers
who are impacted by the issues because they engage in operations
at varying levels. Personal consultations, regular newsletters, field visits and demonstrations
make the sustainable implementation and acceptance
of such measures possible.
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