Askov Long-Term Experiments on Animal Manure and Mineral Fertilizers - Lermarken
Entry ID: Denmark.Askov

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Summary
Abstract: The ASKOV Long-term Experiments on Animal manure and Mineral
Fertilizers began in 1894. This area was first cultivated around
1800, and was previously open mixed heath and deciduous scrubland. The
Average climatic conditions at the experimental site are: minimum
annual temperature: 4.4 deg C; Mean annual temperature: 7.7 deg C;
Maximum annual temperature: 10.8 deg C; and Mean annual rainfall: 862
mm. The soil properties of the site are:

Minimum depth of root limiting layer: 80cm
Maximum depth of root limiting layer: 150 cm
Approximate minimum cation exchange capacity: 99.3 mmol/kg
Approximate maxiumum cation exchange capacity: 115.7 mmol/kg
Approximate minimum soil organic matter content: 2.14%
Approximate maximum soil organic matter content: 2.82%
Approximate minimum carbon:nitrogen ratio: 11.16
Approximate maximum carbon:nitrogen ratio: 12.25
Approximate minimum soil bulk density: 1.57 g/cm3
Approximate maximum soil bulk density: 1.64 g/cm3
Percent clay (i.e. particles less than 2 um): 10%
Percent silt (i.e. particles between 2 um and 20 um): 13%
Percent sand (i.e. particles between 20 um and 2000 um): 77%
Approximate minimum soil pH: 6
Approximate maximum soil pH: 6.5 (Method of determining soil pH: In CaCl2)


The land use and treatments in the experiment are: 4-course rotation
of winter cereals, roots, spring cereals, clover/grass with
treatments: Nil, 4 levels FYM, 4 levels NPK, NP, NK, PK, N, P, K. The
measurements made during the experiment are listed as parameters in
this record. The frequency of measurement varies by type of
measurement made.

The width of the smallest plot is 7.33m. the length of the smallest
plot is 9.4m. The slope is 1-2%, and the shape is uniform.
Cultivation is perpendicular to plotborders. the width of the discard
strip around the plot is 1-2m.

DATA AVAILABLE IN ELECTRONIC FORMAT:

Yield data available in electronic format from 1894
Total dry matter offtake data available in electronic format from 1894
Nitrogen content of offtake data available in electronic format from
1949 Content of other nutrients in offtake data available in
electronic format from 1953
Total soil carbon data available in electronic format from 1923
Data available in electronic format for total soil nitrogen from 1923
Data available in electronic format for other nutrients from 1912
Data available in electronic format for rainfall from 1970
Data available in electronic format for air temperature from 1970
Data available in electronic format for soil temperature from 1970
Data available in electronic format for wind speed from 1970
Data available in electronic format for net radiation from 1970
Data available in electronic format for sun hours from 1970
Data available in electronic format for relative humidity from 1970

This information was compiled for the GCTE-SOMNET Database, Pete
Smith, Pete Falloon, David Powlson, and Jo Smith. Soil Science
Department, IACR-Rothamsted, UK.

Related URL
Link: VIEW PROJECT HOME PAGE
Description: This url links to the GCTE-SOMNET home page where additional project
information can be obtained. This site is currently in a datasharing
phase of the network where actual data will become available shortly,
at different levels of accessibility. Please follow this Link for
more information.


Geographic Coverage
 N: 55.5 S: 55.4  E: 9.12  W: 9.11
 Min Depth: SURFACE  Max Depth: 20 CM

Data Set Citation
Dataset Originator/Creator: Bent T. Christensen
Dataset Title: Askov Long-Term Experiments on Animal Manure and Mineral Fertilizers - Lermarken
Online Resource: http://www.rothamsted.bbsrc.ac.uk/aen/eusomnet/expts/askovle.html


Temporal Coverage
Start Date: 1894-01-01


Location Keywords
CONTINENT > EUROPE > NORTHERN EUROPE > SCANDINAVIA > DENMARK


Science Keywords
AGRICULTURE >AGRICULTURAL CHEMICALS >FERTILIZERS    [Definition]
AGRICULTURE >AGRICULTURAL PLANT SCIENCE >CROP/PLANT YIELDS    [Definition]
AGRICULTURE >ANIMAL SCIENCE >ANIMAL MANURE AND WASTE >MANURE    [Definition]
AGRICULTURE >SOILS >CARBON >BIOMASS CARBON    [Definition]
AGRICULTURE >SOILS >CARBON >CARBON DIOXIDE EVOLUTION    [Definition]
AGRICULTURE >SOILS >CARBON >TOTAL CARBON    [Definition]
AGRICULTURE >SOILS >NITROGEN >TOTAL NITROGEN    [Definition]
AGRICULTURE >SOILS >ORGANIC MATTER    [Definition]
AGRICULTURE >SOILS >SOIL BULK DENSITY    [Definition]
AGRICULTURE >SOILS >SOIL CHEMISTRY >VARIOUS NUTRIENTS    [Definition]
AGRICULTURE >SOILS >SOIL RESPIRATION    [Definition]
AGRICULTURE >SOILS >SOIL TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CHLORIDE    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >EVAPOTRANSPIRATION    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >HUMIDITY    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR    [Definition]
ATMOSPHERE >ATMOSPHERIC WINDS >SURFACE WINDS >WIND SPEED    [Definition]
ATMOSPHERE >PRECIPITATION >RAIN    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >NET RADIATION    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >SUNSHINE >HOURS OF SUNSHINE    [Definition]
BIOSPHERE >VEGETATION >NITROGEN    [Definition]
LAND SURFACE >SOILS >CARBON >BIOMASS CARBON    [Definition]
LAND SURFACE >SOILS >CARBON >CARBON DIOXIDE EVOLUTION    [Definition]
LAND SURFACE >SOILS >ORGANIC MATTER    [Definition]
LAND SURFACE >SOILS >SOIL BULK DENSITY    [Definition]
LAND SURFACE >SOILS >SOIL CHEMISTRY >VARIOUS NUTRIENTS    [Definition]
LAND SURFACE >SOILS >SOIL RESPIRATION    [Definition]
LAND SURFACE >SOILS >SOIL TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >NITROGEN COMPOUNDS >MOLECULAR NITROGEN >WET DEPOSITION, AMMONIUM    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >NITROGEN COMPOUNDS >NITROGEN OXIDES >WET DEPOSITION, NITRATE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >SULFUR COMPOUNDS >SULFUR OXIDES >WET DEPOSITION, SULPHATE    [Definition]


ISO Topic Category
FARMING
BIOTA


Platform
GROUND-BASED OBSERVATIONS    [Information]


Quality
Width of smallest plot is 7.33 m
Length of smallest plot is 9.4 m
Slope: 1-2% . Shape: Uniform
Details of direction of cultivation: Perpendicular to plot borders
Width of Discard Strip around plot: 1-2 m

There are at least 1 replicates in the experiment. See Christensen et
al. (1994).
There are Unmanured plots since 1893 for control plots.
See Christensen et al. (1994)
See Christensen et al. (1994) - based on reexamination of historical
data, descriptions and raw data for crop yield.


Access Constraints
none


Keywords
CLOVER
DRY MATTER OFFTAKE
FYM
LONG TERM EXPERIMENTS
NITROGEN
NK
NP
NPK
PHOSPHORUS
PK
POTASSIUM
SOMNET
TRIFOLIUM L.
WINTER CEREALS


Data Center
European Soil Organic Matter Network, Global Change and Terrestrial Ecosystems Soil Organic Matter Network, Rothamsted Research    [Information]
Data Center URL: http://www.rothamsted.bbsrc.ac.uk/aen/eusomnet/

Data Center Personnel
Name: PETER FALLOON
Phone: +44 (0)1582 763133 x2110
Fax: +44 (0)1582 760981
Email: Pete.Falloon at bbsrc.ac.uk
Contact Address:
Agriculture & Environment Division,
Rothamsted Research,
Harpenden,
Herts. AL5 2JQ UK.


Personnel
BENT T. CHRISTENSEN
Role: TECHNICAL CONTACT
Phone: +45 89 99 1709
Fax: +45 89 99 1719
Contact Address:
Dept. Soil Science
Research Centre Foulum
P.O. Box 23
City: Tjele
Postal Code: DK-8830
Country: Denmark


TYLER B. STEVENS
Role: DIF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
Anderson, T.H. & Domsch, K.H. (1989) Ratios of microbial biomass carbon to total organic carbon in arable soils. Soil Biol. Biochem. 21: 471-479.

Christensen, B.T. (1988) Effects of animal manure and mineral fertilizer
on the total carbon and nitrogen contents of soil size fractions. Biol. Fertil. Soils 5: 304-307.

Christensen, B.T., Petersen, J., Kjellerup, V. & Trentemoller, U. (1994) The Askov Long-Term Experiments on Animal Manure and Mineral Fertilizers: 1894-1994. Danish Institute of Plant and Soil Science SP Report 43, 85pp.

Eiland, F. (1980) The effects of manure and NPK fertilizer on the soil
microrganisms in a Danish long-term field experiment. Danish Research Service for pant and Soil Science, Report No. 1522: 447-454.

Kofoed, A.D. & Nemming, O. (1976) Askov 1894: Fertilizers and manure on sandy and loamy soils. Ann Agron. 27: 583-610.

Kofoed, A.D. (1980) Humus in long-term experiments in Denmark. In: Soil
Degredation (eds: Boels, D., Davies, D.B. & Johnston, A.E.), A.A. Balkema, Rotterdam: 241-258.

Petersen, J. (1994) Long-term experiments at Askov Experimental Station
1894: Description of the data. Danish Institute of Plant and Soil Science, 13pp.

Schjonning, P., Christensen, B.T. & Cartensen, B. (1994) Physical and chemical properties of a sandy loam receiving animal manure, mineral fertilizer or no fertilizer for 90 years. European Journal of Soil Science 45: 257-268.

Creation and Review Dates
DIF Creation Date: 1999-09-20
Last DIF Revision Date: 2008-01-31
Future DIF Review Date: 2000-09-20

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