Soil fertility in northern Sweden, R3-2037, Röbäcksdalen

Local identifier
R3-2037, AC-410-1969
Years operational
1969—
Objective
To investigate if the long-term productivity of an agricultural soil can be increased by using mineral fertilizers. Focus is on the influence of the natural conditions of the site compared to the influence of management practices. What factors are the most important for long-term productivity: fertilization, crop rotation, or natural circumstances? In addition, the soils resilience against nutrient impoverishment and intensive crop production is tested. The northern soil fertility experiments were designed to extend and complement the Soil fertility experiments (R3-9001) experimental series.
Description
The experimental serie started in 1969 and consist of two experiments located at Röbäcksdalen and Offer. The crop rotation consists of barley, ley I, ley II, oil seed (harvested as forage), barley, and oats. In autumn, after ley II and oats, cattle slurry, corresponding to 4 000 kg dry matter ha-1, is applied to all treatments. The removal of P and K at harvest is calculated for each six year rotation. Nitrogen is applied every year at five levels. Crop samples are collected every year and top soil samples every third year.
Data Access Statement
Available to any researcher on request
Data Access Notes
https://www.slu.se/en/departments/soil-environment/research/soil-nutrient-cycling/slu-field-research-plant-nutrition/
Data license
Don't know
Data policy
Don't know
Organization
The Swedish University of Agricultural Sciences, SLU
research organisation
Person
Dr Sabina Braun
experiment manager
SLU
Soil and Environment

Site: Röbäcksdalen

Type
research station field
Local code
AC-410-1969
Location
Umeå
Sweden
Geographic location
63.8099, 20.2327
+−
© OpenStreetMap contributors
Elevation
10 Metres
Visits permitted?
Yes
Visiting arrangements
Contact soilnutrientcycling@slu.se

Design period:

Description
There is six phosphorus and potassium combinations: A=Replacement P and Replacement K B= Replacement P + 20 kg P ha-1 and replacement K C=Replacement P + 40 kg P ha-1 and replacement K D=Replacement P and half replacement K E=Replacement P + 20 kg P ha-1 and no K F=No P and no K (since 2004, before that high P and K fertilizers addition) Each treatment A-F is tested at five levels of nitrogen addition: Crop Level 1 Level 2 Level 3 Level 4 Level 5 Barley and oats 0 30 60 90 120 Canola 0 60 120 180 240 Ley first year 0 25 50 100 200 Ley II and III year 0 40 80 160 320 In autumn, after ley II and oats, cattle slurry, corresponding to 4 000 kg dry matter ha-1, is applied to all treatments.
Number of replicates
2
Crops
CropYears grown
spring barley
castor oil plant
leys
oats
Crop Rotation
Unnamed
  • 1
    spring barley
  • 2
    leys
  • 3
    leys
  • 4
    leys
  • 5
    castor oil plant
  • 6
    spring barley
  • 7
    oats