Field lab Broddbo - Grass trial on peatsoil
- Local identifier
- 2015 R1-145
- Years operational
- 2014—
- Objective
- Study the long-term effect of different grasses on yield and greenhouse gas emissions
- Description
- Timothy, Reed canary grass and tall fescue are grown on a fen peat soil to study yield and GHG emissions. 2020 and 2021 half area of the plots were compacted.
- Data Access Statement
- Other
- Data Access Notes
- An online application form for access to these long-term field experiments or data from these experiments. 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
- Organization
- Swedish University of Agricultural Sciencesresearch organisation
- Person
Site: Broddbo grasstrial
- Type
- farmer field
- Local code
- Broddbo field lab
- Location
- BroddboUppsalaSweden
- Geographic location
- 60.027659, 17.429745
- Elevation
- 30 Metres
- Visits permitted?
- Yes
- Visiting arrangements
- Contact Örjan Berglund [email protected]
- History
- The area was drained starting in the 1840ies. I has been a pasture before we used it as research fields.
- Management
- Three treatements repeated 4 times. Timothy, Reed Canary grass and tall fescue. They are harvested 2 times and fertilised with mineral fertiliser. NPK 11-5-18, 2*50 kg N. Some years GHG emissions are measured.
- Soil type
- Euic Typic Haplosaprist
- Soil description
- A well decomposed (H8-10) 1m deep fen peat.
- Soil properties
Variable Depth Value (range) Units Ref year Estimated? Baseline? soil pH 0 – 20 Centimetres 5.55 2014 soil pH 20 – 40 Centimetres 5.73 2014 Loss on ignition 0 – 20 Centimetres 86.2 % 2014 Loss on ignition 20 – 40 Centimetres 85.03 % 2014 - Climatic type
- warm humid continental climate
- Climate description
- Dfb
- Climate properties
Variable Time period Value (range) Units air temperature 1991 – 2020 6.8 degree Celsius precipitation 1991 – 2020 600 mm
Design period: Grass trial 2014-2020 (2014—2020)
- Description
- Timothy, Reed Canary Grass and Tall Fescue is grown in 6*12m plots. Harvested 2 times per year, fertilized with 2*50 kg N as NPK 11-5-18.
- Number of plots
- 12
- Number of replicates
- 4
- Number of harvests per year
- 2
- Crops
Crop Years grown Timothy grass canary grass Tall fescue - Measurements
Variable Material Units Frequency Scale Comment forage yield All crops kg/ha 2 CO2 emission Soil mg/m2/h 10 N2O emission Soil mg/h2/h 10
Design period: Grass pack trial (2020—)
- Design Type
- Split-plot
- Description
- Half area of the plots in the Grass trial was compacted by a heavy tractor
- Design description
- A tractor compacted half area of the plots
- Number of plots
- 12
- Number of subplots
- 12
- Number of replicates
- 4
- Number of harvests per year
- 2
- Crops
Crop Years grown Timothy grass canary grass Tall fescue - Factor
- Factor name
- Factor levels
- Compaction The plot is compacted 2020 and 2021 with a 9640 kg tractor
Compaction (9640 kg)
2020—2021Applied to crop: All cropsApplication frequency: 1Application method: Tractoruncompacted (0 kg)
2020—2021
- Measurements
Variable Material Units Frequency Scale Comment forage yield All crops kg/ha 2 CO2 emission Soil mg/m2/h 10 N2O emission Soil mg/m2/h
Related publications
- Carbon capture efficiency, yield, nutrient uptake and trafficability of different grass species on a cultivated peat soil https://doi.org/10.1016/j.catena.2018.10.007 [In English]