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Phosphorus losses from arable land in England.

Catt, J. A. and Howse, K. R. and Farina, R. and Brockie, D. and Todd, A. and Chambers, B. J. and Hodgkinson, R. and Harris, G. L. and Quinton, John N. (1998) Phosphorus losses from arable land in England. Soil Use and Management, 14 (Supple). pp. 168-174. ISSN 0266-0032

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    Concentrations and annual loadings of molyhdate reactive P (MRP) and total (including particulate) P (TP) are reported from field drainage, catchment and erosion experiments in England. Annual losses through field drains and in catchment runoff were 0.037-0.74 kg MRP/ha and 0.37-2.64 kg TP/ha, but those in surface runoff from experimental plots measuring erosion were generally much greater (often > 3 kg MRP/ha and up to 32 kg TP/ha in a wet year). Amounts of TP in drainflow and catchment runoff depended upon factors influencing soil dispersibility, such as particle size distribution and calcium carbonate content. The results to date suggest that P losses in surface runoff and erosion from arable fields to water are best limited by: (a) maximizing crop cover, using minimal cultivation practices and where possible planting crop rows across rather than up and down the slope, (b) avoiding cultivation practices that result in dispersion of soil particles, and (c) avoiding application of P fertilizer to wet soils when rainfall is likely soon after application. Consideration should he given to maintaining field drains below peak efficiency to reduce subsurface P losses.

    Item Type: Article
    Journal or Publication Title: Soil Use and Management
    Uncontrolled Keywords: Phosphorus • runoff • drainage water • losses from soil • minimum tillage • flow to drains • UK
    Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
    Departments: Faculty of Science and Technology > Lancaster Environment Centre
    ID Code: 13180
    Deposited By: Dr John Quinton
    Deposited On: 11 Feb 2009 13:45
    Refereed?: Yes
    Published?: Published
    Last Modified: 24 Jun 2016 01:06
    Identification Number:

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