Correlations between concentrations of plant nutrients in runoff from small catchments in Norway

Factor analysis investigated the relationship between different compounds of nitrogen, phosphorus, potassium and suspended dry matter in runoff from catchments in agricultural areas in southern and central Norway. The plant nutrients were grouped in three factors: phosphorus factor, nitrogen factor...

Full description

Saved in:
Bibliographic Details
Published in:Hydrology Research 1995-01, Vol.26 (2), p.91-110
Main Authors: Haraldsen, T.K. (Norwegian State Agricultural Research Station, Tromsoe (Norway)), Oygarden, L, Rognerud, B, Aastveit, A.H
Format: Article
Language:English
Subjects:
AGRICULTURA
Agricultural practices
Agricultural runoff
Agricultural watersheds
AGRICULTURE
AZOTE
BASSIN VERSANT
Catchment area
Catchment runoff
Catchments
CLIMA
CLIMAT
CLIMATE
Correlation
CUENCAS HIDROGRAFICAS
Dry matter
Earth sciences
Earth, ocean, space
EAU DE RUISSELLEMENT
EROSION
ESCORRENTIA
Exact sciences and technology
Factor analysis
FOSFORO
Freshwater
Hydrology
Hydrology. Hydrogeology
Mineral nutrients
NITROGEN
Nitrogen factor
NITROGENO
NORUEGA
NORVEGE
NORWAY
Nutrients
PHOSPHORE
PHOSPHORUS
POTASIO
POTASSIUM
RUNOFF
Seasonal variation
Seasonal variations
Slurries
Soil
Soil conditions
Soil erosion
WATERSHEDS
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Factor analysis investigated the relationship between different compounds of nitrogen, phosphorus, potassium and suspended dry matter in runoff from catchments in agricultural areas in southern and central Norway. The plant nutrients were grouped in three factors: phosphorus factor, nitrogen factor and erosion factor. In south-eastern Norway there was a significant correlation between runoff and concentration levels of phosphorus and suspended dry matter in winter and spring erosion periods. Climate, agricultural practices and soil conditions caused seasonal variation of the different factors. In the catchments in south-western Norway there was a decreasing trend in concentration level of nitrogen due to changed practice for slurry application. In the catchments in eastern and central Norway there was a decreasing concentration level of phosphorus. The reduction in applied phosphorus was 15-50% but the decrease in concentration level of phosphorus in runoff accounted for 5 to 15% of the variation.
ISSN:0029-1277
1998-9563
2224-7955
DOI:10.2166/nh.1995.0006