Crop rotations with and without ley - Säby

This experiment has been added by the GLTEN Curators using existing published sources.
Local identifier
R4-1103-5
Years operational
1969—
Objective
To investigate the long-term effect of rotational grass and grass/clover leys on the yield of annual crops in the crop sequence depending on N-fertilisation
Description
This studies the effects of two-year leys on yields of crops in the rotations under different nitrogen fertilisation regimes and is repeated at Lanna and Stenstugu, Sweden
Data Access Statement
Don't know
Data Access Notes
An online application form for access to these long-term field experiments or data from these experiments. Soil sample archive available. https://www.slu.se/globalassets/ew/org/centrb/langliggande/gb-ltt-application-form-slu-20140820.docx
Data license
Don't know
Data policy
https://www.slu.se/globalassets/ew/org/centrb/langliggande/gb-guidelines_lte_slu_20140820.pdf
Organizations
Nordic LTE Research Platform
research organisation
Swedish University of Agricultural Sciences, Agricultural Long-Term Experiments
research organisation
Person
Dr Goran Bergkvist
Swedish University of Agricultural Sciences
Department of Crop Production Ecology

Site: Crop rotations with and without ley - Säby

Type
research station field
Local code
R4-1103-5
Location
Saby
Uppland
Sweden
Geographic location
59.49, 17.42
© OpenStreetMap contributors
Visits permitted?
Yes
Visiting arrangements
Complete online application
Soil description
silt loam
Soil properties
VariableDepthValue (range)UnitsRef yearEstimated?Baseline?
clay content0 – 25 Centimetres23 Percent
silt content0 – 25 Centimetres53 Percent
sand content0 – 25 Centimetres20 Percent
soil organic matter0 – 25 Centimetres4 Percent
Climate properties
VariableTime periodValue (range)Units
air temperature 1961 – 1990 5.3 degree Celsius
precipitation 1961 – 1990 565 millimeter

Design period: (1969—)

Design Type
Split split plot
Description
Size of treated plot (length × width and area) 4.75 × 18.65 = 89 m²
Design description
72 - 3-factorial split-split-plot design. Three crop sequences in main plots are replicated six times. Each replicate is at a different position in the crop sequence. Four N-fertilizer levels are included in sub-sub-plots.
Number of plots
72
Number of replicates
6
Crops
CropYears grown
rapeseed
winter wheat
grass clover leys
spring barley
spring oats
grass leys
spring wheat
bare fallow
Crop Rotations
Crop rotation A
  • 1
    rapeseed
  • 2
    winter wheat
  • 3
    spring oats
  • 4
    spring barley
    under sown ley
  • 5
    grass clover leys
  • 6
    grass clover leys
Crop rotation B
  • 1
    rapeseed
  • 2
    winter wheat
  • 3
    spring oats
  • 4
    spring barley
    under sown ley
  • 5
    grass leys
  • 6
    grass leys
Crop rotation C
  • 1
    rapeseed
  • 2
    winter wheat
  • 3
    spring oats
  • 4
    spring barley
  • 5
    spring wheat
  • 6
    bare fallow
Factor
Factor name
Factor levels
nitrogen fertilizer exposure
*the N fertilisation for clover grass leys is based on the percentage of legume crops; the higher the percentage of legumes, the lower the N fertilisation
N0  (0 kgN/ha)
Applied to crop: All crops
The N0 treatment was fertilised with 30 kg ha–1 before sowing of grass leys and oilseeds to facilitate the establishment of these crops
N1  (40-80 kgN/ha)
Applied to crop: All crops
Rate varies for different crops: spring oats 40; winter wheat 45; oilseed 60; spring barley 60; spring wheat 60; grass ley 45+35; *clover-grass ley 0-80
N2  (60-120 kgN/ha)
Applied to crop: All crops
Rate varies for different crops: spring oats 80; winter wheat 90; oilseed 120; spring barley 60; spring wheat 120; grass ley 90+70; *clover-grass ley 0-160
N3  (60-240 kgN/ha)
Applied to crop: All crops
Rate varies for different crops: spring oats 120; winter wheat 135; oilseed 180; spring barley 60; spring wheat 180; grass ley 135+105; *clover-grass ley 0-240
Measurements
VariableMaterialUnitsFrequencyScaleComment
yield componentsNot specified
soil organic matterNot specified

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