Nutrient leaching from a cereal crop rotation with pig slurry and cover crops, R0-8403
- Local identifier
- R0-8403
- Years operational
- 1984—
- Objective
- Evaluate effects of pig manure, applied in spring or autumn and at different rates, on N, P and K leaching.
- Description
- Animal production and potato crops dominated this region, just beside the coast. Soon also cover crops were introduced in the experiment, which proved to be very successful for improving the water quality. This is the oldest experiment with continuous use of cover crops in Sweden and has been used for assessment of long-term effects of cover crops and manure applications on N and P leaching and on C stocks. Today the core design of the experiment remains, but treatments have been changed from 2010 in order to have replicates. Excluded treatments were autumn application and high doses of pig slurry, which has delivered valuable information to earlier knowledge gaps. Spring cereals are grown almost every year and the straw is removed from the field. Perennial ryegrass (Lolium perenne) is used as a cover crop, undersown in the main crop in spring. Stubble cultivation and moldboard ploughing are practiced, in autumn for plots without cover crops and in spring for cover crop treatments. Mineral fertilizer or pig slurry is combined with cover crop. Pig slurry is applied according to a P dose of 20 kg/ha and complemented with mineral N (assuming 90 % efficiency of ammonium in slurry). Water flow is registered and flow-proportional water samples are analysed for Tot-N, Tot-P, PO4-P and K. Harvested grain and straw is analysed for N, P and K and then archived. The soil is analysed for mineral N three times per year and samples for basic soil chemical properties are taken with six years interval (archived). Cover crop biomass and its N and C content is determined in late autumn. 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
- Don't know
- Data URL
- https://view.officeapps.live.com/op/view.aspx?src=https%3A%2F%2Fwww.slu.se%2Fglobalassets%2Few%2Forg%2Fcentrb%2Flangliggande%2Fgb-ltt-application-form-slu-20140820.docx&wdOrigin=BROWSELINK
- Data policy
- https://www.slu.se/globalassets/ew/org/centrb/langliggande/gb-guidelines_lte_slu_20140820.pdf
- Organizations
- Swedish University of Agricultural Sciences, SLU Agricultural Long-Term Experimentsresearch organisationHushållningssällskapet Hallandexperimental research station
- People
- Senior Lecturer Helena Aronssonprincipal investigatorSwedish University of Agricultural SciencesDepartment of Soil and Environment; Agricultural water managementResearcher Lisbet Norbergprincipal investigatorSwedish University of Agricultural SciencesDepartment of Soil and Environment; Agricultural water managementResearch Engineer Maria Blombergdata managerSwedish University of Agricultural SciencesDepartment of Soil and Environment; Agricultural water management
Site: Nutrient leaching from a cereal crop rotation with pig slurry and cover crops, R0-8403
- Local code
- R0-8403
- Location
- MellbyHallandSweden
- Geographic location
- 56.481518, 12.985677
- Elevation
- 7 Metres
- Visits permitted?
- Yes
- Soil type
- unknown
- Soil description
- Sandy loam. 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
Variable Depth Value (range) Units Ref year Estimated? Baseline? clay content 0 – 20 Centimetres 5.6 Percent 1987 clay content 20 – 40 Centimetres 6.1 Percent 1987 clay content 40 – 60 Centimetres 1.5 Percent 1987 clay_content 60 – 80 Centimetres 1.9 1987 clay content 80 – 100 Centimetres 1.6 1987 clay content 150 – 170 Centimetres 38.8 Percent 1987 soil organic matter 0 – 20 Centimetres 4.8 Percent 1987 soil organic matter 20 – 40 Centimetres 2.6 Percent 1987 soil organic matter 40 – 60 Centimetres 1.1 Percent 1987 soil organic matter 60 – 80 Centimetres 0.6 Percent 1987 soil organic matter 80 – 100 Centimetres 0.4 Percent 1987 soil organic matter 150 – 170 Centimetres 0 Percent 1987 silt content 0 – 20 Centimetres 42.6 Percent 1987 silt content 20 – 40 Centimetres 45.6 Percent 1987 silt content 40 – 60 Centimetres 56.4 Percent 1987 silt content 60 – 80 Centimetres 45.2 Percent 1987 silt content 80 – 100 Centimetres 69 Percent 1987 silt content 150 – 170 Centimetres 1987 sand content 0 – 20 Centimetres 46.4 Percent 1987 sand content 20 – 40 Centimetres 45.1 Percent 1987 sand content 40 – 60 Centimetres 41 Percent 1987 sand content 60 – 80 Centimetres 52.1 percent 1987 sand content 80 – 100 Centimetres 28.8 Percent 1987 sand content 150 – 170 Centimetres 16 Percent 1987 - 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 https://www.slu.se/fakulteter/nj/om-fakulteten/centrumbildningar-och-storre-forskningsplattformar/faltforsk/vader/lantmet/ the station name is Mellby Sa (26926).
- Climate properties
Variable Time period Value (range) Units air temperature 1991 – 2020 8.4 degree Celsius precipitation 1991 – 2020 850 millimeter air temperature 1961 – 1991 7.2 degree Celsius precipitation 1961 – 1991 783 millimeter
Design period: (2010—)
- Design Type
- Other
- Description
- Plot size 40x40 m No. of plots 14 Spacing between tiles 6 m Depth of tiles 0.9-1 m Treatment replicates 1-3 set crop rotation Types of fertilizer/amendments NPK, Pig slurry Cover crops Autumn/spring tillage Treat-ment Plot no Cover crop Stubble cultivation Tillage Fertilizer, kg/ha Pig slurry* N P K A 7 No 1-15 Sep Nov-Dec 0 0 60 0 B 5 Yes Feb-Mar Feb-Mar 0 0 60 0 C 2, 11, 12 No 1-15 Sep Nov-Dec 90/110 15 60 0 D 10, 13, 14 Yes Feb-Mar Feb-Mar 90/110 15 60 0 E 1, 8, 9 No 1-15 Sep Nov-Dec ** 0 30 20 kg P/ha F 3, 4, 6 Yes Feb-Mar Feb-Mar ** 0 30 20 kg P/ha **90/110-0.9 *manureNH4
- Number of plots
- 14
- Number of replicates
- 3
- Crops
Crop Years grown oats spring barley spring wheat barley spring rapeseed triticales English rye grass - Crop Rotation
- 2006- 2006—
- 1oats
- 2spring barley
- 3spring wheat