Defra - Department for Environment, Food and Rural Affairs.

Science Search

Science and Research Projects

Return to Science Search homepage   Return to Project List

To determine effect of soil pH on aluminium content of drainage waters from improved and unimproved pastures - SP0201

Description
SP0201. Effect of soil pH on aluminium content of drainage waters from improved and unimproved upland pastures.

The contribution of agricultural land to the aluminium (Al) loading of surface waters is not well understood. Water draining from unimproved pastures is more acidic than that draining from limed land; it is possible that allowing increasing areas of upland pasture to revert to low pH could increase the Al loading in surface waters. This study will aim to provide data on the amounts of Al leaving upland pastures and the degree to which this is affected by soil pH. This will enable some assessment of the implications of allowing upland pasture to become acidic. The establishment of a database of upland catchment runoff will allow determination of the factors that influence the runoff reponse from such agricultural land; these can be utilised to minimise the environmental impact of runoff. The study will be composed of 2 specific objectives outlined as follows: 1. Provision of advice on whether allowing upland pasture to remain or become acidic is likely to lead to unacceptably high concentrations of Al in surface waters; 2. Provision of sophisticated hydrological support to an existing research project (SC05/011). This second objective entails determining whether the hydrological approach adopted is suitable for generating the information required and determining catchment characteristics in studies of the hydrologic response of upland areas. Results of the study will lead to an improved understanding of the catchment characteristics that lead to runoff and will be utilized in support of water quality studies.
Project Documents
• Final Report : Effect of soil pH on the aluminium content of drainage waters from improved and unimproved upland pastures   (367k)
Time-Scale and Cost
From: 1989

To: 1994

Cost: £223,000
Contractor / Funded Organisations
ADAS UK Ltd.
Keywords
              
Fields of Study
Soil Protection