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Data Extent

Main Cropping System Experiment at the Kellogg Biological Station, Hickory Corners, MI (1988 to 2015)

This dataset includes information about the LTER main site treatments, agronomic practices carried out on the treatments and approved site use requests. Most long-term hypotheses associated with the KBS LTER site are being tested within the context of the main cropping systems study. This study was established on a 48 ha area on which a series of 7 different cropping systems were established in spring 1988, each replicated in one of 6 ha blocks. An eighth never-tilled successional treatment, is located 200 m off-site, replicated as four 0.06 ha plots. Cropping systems include the following treatments: standard chemical input corn/soybean/wheat rotation conventionally tilled (corn/soybean prior to 1992) standard chemical input corn/soybean/wheat rotation no-tilled (corn/soybean prior to 1992) low chemical input corn/soybean/wheat rotation conventionally tilled (ridge till prior to 1994) zero chemical input corn/soybean wheat rotation conventionally tilled (ridge till prior to 1994) Populus clones on short-rotation (6-7 year) harvest cycle continuous alfalfa, replanted every 6-7 years early successional community on historically tilled soil successional community on never-tilled soil. For specific crops in a given year see the Annual Crops Summary Table. In 1993 a series of forest sites were added to the main cropping system study to provide long-term reference points and to allow hypotheses related to substrate diversity to be tested. These include: DF – three deciduous forest stands, two old-growth and one 40-60 years post-cutting CF – three conifer plantations, 40-60 years old SF – three old-field (mid-successional) sites 40+ years post-abandonment. All share a soil series with the main cropping system treatments, and are within 5 km of all other sites. For each system (and for a number of microplot treatments nested within the main treatment plots) the following baseline variates are being measured (described in greater detail in other data set descriptors): plant characteristics, including species distributions and abundances, net aboveground productivity by functional group (crop vs. non dominant biomass, selected non dominant biomass), economic yields, tissue C and N contents, seed bank composition; soil chemical and physical characteristics, including soil moisture, pH, inorganic N and P pools, total C, N, and P pools, bulk density; soil biological characteristics, including microbial biomass C and N, N mineralization rates (buried bags), microbial populations, invertebrate populations; and insect and pathogen dynamics, including distributions and abundances of major insect pests and predators and of Fusarium pathogens.

original data source http://lter.kbs.msu.edu/datasets/7

Release Date
Spatial / Geographical Coverage Area
POLYGON ((-85.404699 42.420265, -85.366857 42.420265, -85.366857 42.391019, -85.404699 42.391019))
Publisher Not Specified
Temporal Coverage
May 9, 1988 to November 18, 2015
License Not Specified
Contact Name
Kellogg Biological Station
Contact Email
Public Access Level
Source ID
Harvested from Geodata Harvest
Harvest Source TitleGeodata Harvest
Harvest Source URIhttps://geodata.nal.usda.gov/geonetwork/srv/eng/csw
Last Harvest PerformedWed, 04/08/2020 - 01:01

Metadata Source

NAL Geospatial Catalog