Nutrient leaching from organic cropping systems without livestock, R0-0447

Local identifier
Years operational
Study realistic crop rotations for an organic system without livestock, in this case a system with crop production on a Sandy loam soil.
The system was adapted to follow the principles for organic farming and regulations for the Swedish certification system for organic farming (KRAV), this was done in collaboration with stakeholders. In the crop production systems, N-fixing crops contribute with N, but also biofertilizers are used, which provide N, P and K. The experiment generated considerable knowledge about nutrient dynamics and losses in organic cropping systems and also about how to manage grass/clover leys and green manure crops in order to reduce leaching risks, for example with timing of harvests and time of incorporation. From 2020, we introduced a somewhat new design in order to investigate strategies for weed control. This is a challenge in organic crop production, where intensive mechanical treatment of weeds often increase the risk of N leaching. Therefore, strategies with row hoeing and cover crops for suppression of weeds is highly interesting. Two strategies are studied, one with high tillage intensity and one where row cultivation and cover crops (where possible) is the main method for weed control. The leys will also be an important component for weed suppression although this is the same for both strategies. During the years, samples for soil mineral N has been taken at different times but in the present strategy no mineral N is determined. Yields of main crop, including leys, are determined every year with analyses of N, P and K and samples of grain are archived. Samples for basic soil chemical properties are taken with six years interval (archived). Water flow is registered and flow-proportional water samples are analysed for Tot-N, Tot-P, NO3-N and K. Staff at Hushållningssällskapet Halland , perform the experimental work.
Data Access Statement
Available to any researcher on request
Data Access Notes
An online application form for access to the long-term field experiments or data from these experiments. Seed sample archive available. Request sends to the experimental manager.
Data license
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Data URL
Data policy
Swedish University of Agricultural Sciences, SLU Agricultural Long-Term Experiments
research organisation
Hushållningssällskapet Halland
experimental research station
Senior Lecturer Helena Aronsson
principal investigator
Swedish University of Agricultural Sciences
Department of Soil and Environment; Agricultural water management
Researcher Lisbet Norberg
principal investigator
Swedish University of Agricultural Sciences
Department of Soil and Environment; Agricultural water management
Research engineer Maria Blomberg
data manager
Swedish University of Agricultural Sciences
Department of Soil and Environment; Agricultural water management

Site: Nutrient leaching from organic cropping systems without livestock, R0-0447

research station field
Local code
Geographic location
56.480497, 12.984332
© OpenStreetMap contributors
7 Metres
Visits permitted?
Soil type
Soil description
Sandy loam Soil properties from the nerarby long-term experiment R0-8304. In the soil properties grain size of silt is 0,002-0,2mm (Swedish Mo and Mjäla) and grain size of sand 0,2-2mm.
Soil properties
VariableDepthValue (range)UnitsRef yearEstimated?Baseline?
clay content0 – 20 Centimetres5.6 Percent1987
clay content20 – 40 Centimetres6.1 Percent1987
clay content40 – 60 Centimetres1.5 Percent1987
clay content60 – 80 Centimetres1.9 Percent1987
clay content80 – 100 Centimetres1.6 Percent1987
clay content150 – 170 Centimetres38.8 Percent1987
silt content0 – 20 Centimetres42.6 Percent1987
silt content20 – 40 Centimetres45.6 Percent1987
silt content40 – 60 Centimetres56.4 Percent1987
silt content60 – 80 Centimetres45.2 Percent1987
silt content80 – 100 Centimetres69 Percent1987
silt content150 – 170 Centimetres45 Percent1987
sand content0 – 20 Centimetres46.4 Percent1987
sand content20 – 40 Centimetres45.1 Percent1987
sand content40 – 60 Centimetres41 Percent1987
sand content60 – 80 Centimetres52.1 1987
sand content80 – 100 Centimetres28.8 Percent1987
sand content150 – 170 Centimetres16 Percent1987
soil organic matter0 – 20 Centimetres4.8 Percent1987
soil organic matter20 – 40 Centimetres2.6 Percent1987
soil organic matter40 – 60 Centimetres1.1 Percent1987
soil organic matter60 – 80 Centimetres0.6 Percent1987
soil organic matter80 – 100 Centimetres0.4 Percent1987
soil organic matter150 – 170 Centimetres0 Percent1987
Climatic type
temperate oceanic climate
Climate description
Long-term averages from Swedish Meterological and Hydrological institute (SMHI), Halmstad (station no.62400). Local climate can be found at the station name is Mellby Sa (26926).
Climate properties
VariableTime periodValue (range)Units
air temperature 1961 – 1990 7.2 degree Celsius
air temperature 1991 – 2020 8.4 degree Celsius
precipitation 1961 – 1990 783 millimeter
precipitation 1991 – 2020 850 millimeter

Design period: (1998—)

Plot size 30x30 m No. of plots 7 Spacing between tiles 7 m Depth of tiles 0.9-1 m Treatment replicates 3-4 Organic set crop rotation Types of fertilizer/amendments Organic NK Cover crops sometimes Autumn tillage Crop rotation and treatments in the organic cropping system experiments since 2020 Oats with undersown ley Red clover seed Green manure Oil rape seed Winter wheat Field bean Treatment A Strategy for weeds with leys and repeated stubble cultivation in autumn Treatment B Strategy for weeds with leys, double row spacing and row cultivation during season Main components of crop rotation and treatments in the organic cropping system experiments, 1998-2018 Oats with undersown ley Ley for green manure Spring wheat Winter rye with undersown ley Ley for green manure Oil rape seed+cover crop
Number of plots
Number of replicates
CropYears grown