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Effects of tannin in dairy cow diets and land application of manure on soil gas fluxes and nitrogen dynamics

Sustainable Dairy

This experiment was designed to determine if tannin concentration and nitrogen (N) content of field-applied dairy cow manure influences greenhouse gas (GHG) emissions from soil, soil N mineralization, and plant productivity. The study was conducted at the U.S. Dairy Forage Research Center farm in Prairie du Sac, WI. Field experiments were set up with six randomized complete blocks with two factors (tannin concentration at 3 levels and N fertilization at 2 levels), plus a control (no manure application) treatment in each block. To begin the experiment, three experimental diets with differing tannin concentrations (0, 0.4, and 1.8% tannin as dry matter intake), were fed to Holstein dairy cows for three months. Manure collected at the end of the three month period was field-applied at two N application rates (240 and 360 kg N ha-1). Manure was broadcast and disk-incorporated on May 15, 2014, in fields that were not irrigated and had no tile drainage. This was followed by tillage using a rototiller. Maize (corn for silage) was planted on May 20, 2014. Corn silage was harvested on September 17, 2014, leaving 20 cm-high residue (stubble). GHG flux measurements took place starting May 15, 2014, with GHG sampling every 7-21 days until harvest. Soil chamber dimensions for flux measurements were 15.24 cm (height), 76.2 cm (length), 42.3 cm (width).

In May 2014, soil was collected for analysis of physical characteristics. Cores 90 cm deep and 10 cm diameter were collected using a Giddings probe and analyzed at the UW Soil and Forage Lab (complete methods at http://uwlab.webhosting.cals.wisc.edu/wp-content/uploads/sites/17/2015/0...). According to the USDA NRCS classification system, soils at the site are St. Charles Silt Loam, fine-silty, mixed, superactive, mesic Typic Hapludalfs, with more than 1.5 m depth to an impermeable layer.

The data are presented as a spreadsheet file with seven sheets: (1) experimental design, (2) soil physical characteristics, (3) gas fluxes, (4) soil nitrogen at 0-10 cm depth, (5) soil nitrogen at 10-20 cm depth, (6), chemical characteristics of dairy manure, (7) crop yield and biomass characteristics. There is also a data dictionary spreadsheet file with a separate dictionary sheet for each data sheet.

Weather data for the field site (not presented here) can be found at: http://www.wunderground.com/personal-weather-station/dashboard?ID=KWIMER...

Dataset Info

These fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web.
Campbell, Claire
Ruark, Matthew D.
Powell, J. Mark
Barford, Carol
Product Type
Spatial / Geographical Coverage Area
POINT (-89.715434 43.333485)
Spatial / Geographical Coverage Location
U.S. Dairy Forage Research Center Farm
Temporal Coverage
Equipment or Software Used
Intended Use
This dataset enables study and simulation modeling of greenhouse gas (GHG) emissions from soils where dairy cow manure has been applied. In particular, this dataset creates a basis for predicting the effects of (1) tannin in dairy manure and (2) nitrogen addition rate, on fluxes. The data also allow quantification of the relationships between GHG emission fluxes and several controlling factors, including temperature, soil moisture and nitrogen content, soil physical characteristics, manure chemical characteristics and forage crop yield and quality.
Use Limitations
Time series of greenhouse gas (GHG) fluxes and soil nitrogen content are notoriously variable over both time and space. Extrapolation and interpolation of these data must be done with caution.
Ag Data Commons
Contact Name
Barford, Carol
Contact Email
Public Access Level
Related Article

Campbell, C.A. (2015). Assessing the impacts of tannin diets on land applications of dairy manure (Master's thesis). Retrieved from https://search.library.wisc.edu/catalog/9912182351802121 (OCLC ocn949720682).

Related Content
Niemann, Kristine
Funding Source(s)
National Institute of Food and Agriculture
Dataset DOI (digital object identifier)
Modified Date
Release Date
Ag Data Commons Keywords: 
  • Animals & Livestock
  • Animals & Livestock
  • Animal production
  • Animals & Livestock
  • Animal production
  • Manure management
  • Agroecosystems & Environment
  • Agroecosystems & Environment
  • Soil
  • Agroecosystems & Environment
  • Soil
  • Organic matter
State or Territory: