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Askov Long-Term Experiments on Animal Manure and Mineral Fertilizers - Lermarken - LTSE

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Data Holder: 
Christensen, Bent
Publications: 
Organic Phosphorus in Soil Size Separates Characterized by Phosphorus-31 Nuclear Magnetic Resonance and Resin Extraction
Publications: 
Soil sulphur status following long-term annual application of animal manure and mineral fertilizers
Subnetworks: 
Askov Long-Term Experiments
Location:
Denmark
Latitude: 55.466667
Longitude: 9.116667
Background
Continent: 
Europe
Website: 
http://soil.scijournals.org/cgi/reprint/63/5/1123
Year LTSE Began: 
1894
Comments: 
Bent T. Christensen Dep. Agroecology, Danish Inst. of Agricultural Sciences, Research Centre Foulum, P.O. Box 50, DK-8830 Tjele, Denmark Bent.T. Christensen@agrsci.dk Ph: (+45) 8999 1709 archive - Manure analysed for N, P and K and data since 1949 stored electronically. Soils have been analysed for a long range of parameters, including isotopes, physical, biological and chemical properties in separate short-term projects embedded in the long-term experiments. A list of references to reports on these studies is available upon request.
Environment
Annual Precipitation (mm): 
800-1200
Soil moisture regime: 
Udic
Dominant plant species (latin genus and species): 
Arable 4-year rotation of Triticum aestivum (winter wheat), Beta vulgaris (beet roots); from 2005 and onwards replaced by Zea mays (silage maize), Hordeum vulgare (spring barley)and grass-legume mixture. With four fields (blocks), every crop is reprented every year.
Landuse: 
Arable
Ecoregion: 
Cool Temperate
Landform (general description): 
flat, well sheltered by the prevailing westerly winds
Slope (%): 
0-2%
Elevation (m): 
0-200
Geological material: 
*mixed morainic deposits
Experimental Design
Design (short description): 
Agronomic plot experiments (plot size from 69 to 110 m2)with replicated treatments. Main factors are different nutrient rates (unmanures,1/2, 1, 1 1/2, 2), with equivalent inputs of major plant nutrients given either in mineral fertilizers (NPK) or in animal manure. Also plots receiving only N, P, K, NK, NP, PK.
Soil Classification
soilorder: 
Alfisol
Soil taxa (ex, Great Group of Soil Taxonomy): 
Hapludalf
Soil/Data Archive
Vegetative samples archived: 
Yes
Soil solid samples archived: 
Yes
Samples from multiple depths: 
Yes
Sample frequency: 
Every 5 years
Year of first sampling for archive: 
1923
Year of last sampling for archive: 
2004
Soil Solid Data
pH and acidity: 
Yes
Nitrogen: 
Yes
Other macronutrients: 
Yes
Micronutrients: 
Yes
Water holding capacity: 
Yes
Bulk Density: 
Yes
Mineralogy: 
Yes
Soil Water Data
pH and alkalinity: 
Yes
Vegetation Data
Harvest mass: 
Yes
Harvest nutrient contents: 
Yes