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Organic farmers grow grassclover in nature areas to remove soil phosphate for development of specious rich grasslands

Timmermans, B.G.H. and Eekeren, N. van (2014) Organic farmers grow grassclover in nature areas to remove soil phosphate for development of specious rich grasslands. In: Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 3, Thuenen Report, no. 20, pp. 799-802.

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While worldwide the current reserves of phosphate rock are being exhausted, many agricultural and former agricultural soils in The Netherlands have been enriched by large quantities of phosphorus as a result of fertilization. In current nature development projects on former agricultural lands, it is thought that this phosphorus prevents development of target-nature types. Therefore nature organizations currently seek ways to remove it. We tested grassclover, organically managed by local farmers, as a tool to extract excessive soil phosphate from nature areas and reimport it into the mineral cycle agricultural farms.
In a small scale experiment we have shown that grassclover with potassium fertilization can remove more than twice the amount of soil phosphate as is removed by traditional mowing without potassium fertilization. We tested the methodology on 60 ha of grasslands in nature areas, ranging in soil phosphorus levels, and measured comparable large decreases in soil phosphate.
We conclude that these results of 3 years measurements show that organically managed grassclover could form an elegant way to help overcome the problems with excessive soil phosphate in nature areas and recycle phospahte.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Subjects: Soil > Soil quality
Soil > Nutrient turnover
Environmental aspects > Air and water emissions
Environmental aspects > Biodiversity and ecosystem services
Research affiliation: Netherlands > Louis Bolk Institute
International Conferences > 2014: 18th IFOAM OWC Scientific Track: 4th ISOFAR Scientific Conference
Deposited By: Timmermans, Dr Bart Gerardus Hubertus
ID Code:23958
Deposited On:01 Oct 2013 07:05
Last Modified:30 Oct 2014 15:08
Document Language:English
Refereed:Peer-reviewed and accepted
Additional Publishing Information:urn:nbn:de:gbv:253-201407-dn053621-1

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