10252: Aspects of phosphorous fertilisation in organic farming
(2006) Aspects of phosphorous fertilisation in organic farming. Poster presented at What can organic farming deliver? COR 2006, Heriot-Watt University, Edinburgh, 18-20 September 2006; Published 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, page 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.
| Document Language: | English |
|---|---|
| Keywords: | heavy metals, manure, mineral fertiliser, slurry, sustainability, uranium |
| Subject Areas: | Environmental aspects > Air and water emissions Crop husbandry > Composting and manuring |
| Research affiliation: | Germany > Federal Agricultural Research Centre FAL Other countries UK > Colloquium of Organic Researchers (COR) > COR 2006 |
| Total budget (Euro): | 0 |
| Orgprints ID Number: | 10252 |
| Contact: | MILLMAN, Mrs Carol A |
| Deposited On: | 20 December 2006 |
| EPrint Type: | Conference poster |
| Published?: | Published |
| Peer Review Status: | Not peer-reviewed |
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