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Aspects of phosphorous fertilisation in organic farming

Schnug, E; Haneklaus, S; Kratz, S and Fan, X (2006) Aspects of phosphorous fertilisation in organic farming. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 277-281.

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Summary

Balanced fertilisation is essential for a considerate use of limited phosphorus (P) resources and for sustainability in organic farming. Plant available soil P levels will decrease and soil fertility will diminish when using P sources with limited P availability such as rock phosphates, bone and bone meals. An in situ digestion with a combination product of elemental S and rock phosphate enhanced significantly the solubility of non water-soluble P sources. In addition to the problem of insufficient solubility, mineral P sources can be contaminated with toxic heavy metals such as Cd 0.1–92.3 mg kg-1) and U (<LLD - 481 mg kg-1) from their source. Farmyard manure and slurry may contain up to 953/727 and 376/132 mg kg-1 Zn and Cu, respectively.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:heavy metals, manure, mineral fertiliser, slurry, sustainability, uranium
Subjects: Environmental aspects > Air and water emissions
Crop husbandry > Composting and manuring
Research affiliation: Germany > Federal Research Centre for Cultivated Plants - JKI > Institute for Crop and Soil Science
UK > Colloquium of Organic Researchers (COR) > COR 2006
Other countries
Deposited By: MILLMAN, Mrs Carol A
ID Code:10252
Deposited On:20 Dec 2006
Last Modified:12 Apr 2010 07:34
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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