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.
Limited to [Depositor and staff only]
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
|Deposited By:||MILLMAN, Mrs Carol A|
|Deposited On:||20 Dec 2006|
|Last Modified:||12 Apr 2010 07:34|
Repository Staff Only: item control page