Long-term Soil Fertility Experiment, Orja, Sweden
Entry ID:
SLU.Orja
|
Summary
This experiment began in 1957 at a site that was cultivated for several centuries before the start of the experiment. It has had no manure (and no cattle) since 1912. The geology at the site is glacial till about 30 m thick. The experiment consists of 2 crop rotations: I. Milk production: Barley,grass/clover,winter wheat,sugar beet; straw/beet tops ... removed, beet receives FYM. II. No cattle: Barley,oil seeds,winter wheat,sugar beet; straw/beet tops ploughed in, no FYM. Treatments: 4 N levels (nil - 600 kg N/ha/rotation); 4 PK levels (nil - replacement+20 kg P+320 kg K/ha/rotation). The average climatic conditions at the experimental site are: Mean annual temperature: 7.9 deg C ; Mean annual rainfall: 730 mm. The soil is described as Typic Eutrochrept (Soil Survey Staff, 1990). Eutric Cambisol (FAO, 1988). The soil properties are: Depth of root limiting layer: 100cm Approximate water holding capacity: 335 mm per 1000 mm Approximate cation exchange capacity: 186 mmol/kg Approximate carbon content: 1.4% Approximate carbon:nitrogen ratio: 10 Approximate soil bulk density: 1.76 g/cm3 Percent clay (i.e. particles less than 2 um): 23% Percent silt (i.e. particles between 2 um and 60 um): 25% Percent sand (i.e. particles between 60 um and 2000 um): 52% Approximate soil pH: 7 Approximate minimum soil pH: 7 Approximate maximum soil pH: 7 Method of determining soil pH: In water. Soil:water = 1:2.5 Measurements, methodology, and frequency: a) Vegetation measurements made and frequency Yield: Every year Total above-ground dry matter: Every year Nitrogen content of offtake: Every year Every year: P, K. b) Soil sampling Time zero soil measurements taken in 1957. Details of soil sampling method: 0-20 cm: 8 random cores/plot = 64 samples every year. 40-60 cm: 8 random cores/2 plots = 32 samples every fourth year. From 1995 soil sampling only once a rotation (40-60 cm: every 8th year). At present soil sampling is carried out with mechanical equipment on a tracked vehicle. Soil is separated into layers Details of measuring depths and soil layers: 0-20 cm every year. 40-60 cm every fourth year. c) Soil measurements made and frequency Total carbon: 1962, 68, 72, 76 & 88. Method of measuring total carbon: 1957-83 - wet combustion (Jansson & Valdmaa, 1961). 1984-> - org. combustion (Strohlein Instrument). Total nitrogen: 1962, 68, 72, 76, 88. Method of measuring total nitrogen: Kjeldahl Soil bulk density or weight: Frequency unspecified Method of measuring soil bulk density or weight: See Kirchmmann & Eriksson (1993) Atmospheric inputs: Precipitation is measured continuously during the growing season with a pluviometer on the field, and the rainwater is analysed for N (Nilsson, LG (1986), p.49). This information was compiled for the GCTE-SOMNET Database, Pete Smith, Pete Falloon, David Powlson, and Jo Smith. Soil Science Department, IACR-Rothamsted, UK.
Geographic Coverage
Spatial coordinates
N: 55.87 |
|
S: 55.85 |
|
E: 12.89 |
|
W: 12.87 |
Min Depth: SURFACE
Max Depth: 60 CM
|
Temporal Coverage
Location Keywords
Science Keywords
ISO Topic Category
Project
Quality
a) Details of the plots Width of smallest plot is 6.25 m Length of smallest plot is 20 m Details of direction of cultivation: Ploughing: right angles; Harrowing: parallel Width of Discard Strip around plot: 1 m b) Details of replication, randomization and controls There are at least 2 replicates in the experiment. The experiment has a restricted randomized plot design. There are control plots described as follows: Nil plots could be considered controls. See Bjarnason & Seeger (1988).
Access Constraints
none
Ancillary Keywords
Data Set Progress
Data Center
Personnel
LENNART
MATTSSON
Role:
TECHNICAL CONTACT
Phone:
46 18 671000
Fax:
46 18 672795
Email:
Lennart.Mattsson at mv.slu.se
Contact Address:
Dept. of Soil Science
Box 7014
City:
UPPSALA
Postal Code:
S-750 07
Country:
Sweden
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
|
Related URL
Link:
VIEW PROJECT HOME PAGE
Description:
This url links to the GCTE-SOMNET home page where additional project
information and methodology can be obtained. This site is currently
in a data sharing phase of the network where actual data will become
available shortly, at different levels of accessibility. Please
follow this link for more information.
|
Publications/References
Bjarnason, S. 1987. Nitrogen dynamics in the long-term soil fertility experiments in Malmohus County. J.R. Swedish Academy, Agriculture and Forestry. Supplement 19, 65-70. In Swedish with English summary. Bjarnason, S. 1989. The long-term soil fertility experiments in Southern Sweden. III. Soil carbon and nitrogen dynamics. Acta Agric. Scand. 39, ... 361-371. Bjarnason, S. and Seeger, P. 1988. The long-term soil fertility experiments in Southern Sweden. II. Statistical analysis of crop data. Acta Agric. Scand. 38, 145-152. Gunnarsson, O. 1987. Long-term dynamics of phosphorus in soils illustrated by means of soil analyses from long-term fertility experiments. J.R. Swedish Academy, Agriculture and Forestry. Supplement 19, 71-92. In Swedish with English summary. Ivarsson, K. 1990. The long-term soil fertility experiments in Southern Sweden. IV, Changes in organic and organic soil phosphorus fractions after a pot trial. Acta Agric. Scand. 40, 205-215. Ivarsson, K. and Bjarnason, S. 1988. The long-term soil fertility experiments in Southern Sweden. I. Background, site description and experimental design. Acta Agric. Scand. 38, 137-143. Jansson, S.L. 1975. Long-term soil fertility studies. Experiments in Malmohus County 1957-74. J.R. Swedish Academy, Agriculture and Forestry, Supplement 10, 4-60. In Swedish with English summary. Jansson, S.L. 1978. Long-term soil fertility experiment as a basis of soil fertility maintenance. J.R. Swedish Academy, Agriculture and Forestry 117, 77-93. In Swedish with English summary. Jansson, S.L. 1983. Twenty-five years of soil fertility studies in Sweden. Swedish University of Agricultural Sciences, Department of Soil Sciences, Division of Soil Fertility, Report 152. In Swedish with English summary. Jansson, S.L. 1986. Soil biology - plant production - fertility studies. The crop residues as a component of soil fertility. J.R. Swedish Academy, Agriculture and Forestry. Supplement 18, 9-31. In Swedish with English summary. Jansson, S.L. 1987. Yield development under different natural conditions, cropping systems and nutrient levels. J.R. Swedish Academy, Agriculture and Forestry. Supplement 19, 9-20. In Swedish with English summary. Kirchmann, H. 1991. Properties and classification of soils of the Swedish long-term fertility experiments. I. Sites at Fors and Kungsangen. Acta Agric. Scand. 41, 227-242. Kirchmann, H. and Eriksson, J. 1993. Properties and classification of soils of the Swedish long-term fertility experiments. II. Sites at Orja and Orup. Soil and Plant Sciences 43, 193-205. Mattsson, L. 1987. Long-term effects of N fertilizer on crops and soils. Swedish University of Agricultural Sciences. Department of Soil Sciences. Division of Soil Fertility, Report No. 170. Nilsson, L.G. 1986. Data of yield and soil analyses in the long-term soil fertility experiments. J.R. Swedish Academy, Agriculture and Forestry. Nilsson, L.G. 1992. Influence of cropping systems, nutrient level and soil species on weed development, Report 33. Swedish Crop Protection Conference, Uppsala. Persson, J. 1987. Impact of crop yield level and plant residues on soil organic matter. J.R. Swedish Academy, Agriculture and Forestry, Supplement 19, 21-28. In Swedish with English summary.
Creation and Review Dates
DIF Creation Date:
1999-12-13
Last DIF Revision Date:
2008-01-31
|
|