uid=KBS,o=lter,dc=ecoinformatics,dc=orgalluid=sbohm,o=lter,dc=ecoinformatics,dc=orgallpublicreadhttps://lter.kbs.msu.edu/datasets/71.emlAgronomic Soil Chemistry at the Kellogg Biological Station, Hickory Corners, MI (1992 to 2025)NicholasHaddadMichigan State University3700 E Gull Lake DriveHickory Corners49060UShaddad@kbs.msu.edu0000-0002-1591-9322JosephSimmonsMichigan State University3700 East Gull Lake DriveHickory CornersMI49060(269) 671-2528(269)671-2104simmonsj@kbs.msu.eduG.RobertsonMichigan State University3700 East Gull Lake DriveHickory CornersMI49060US(269) 760-8364(269)671-2351robert30@msu.edu0000-0001-9771-9895original investigatorStaceyVanderWulpMichigan State University3700 East Gull Lake DriveHickory CornersMI49060US(269) 671-2339(269) 671-2333vanderws@msu.eduprincipal contact2026-05-18Dataset Abstractoriginal data source http://lter.kbs.msu.edu/datasets/71LTERKBSKellogg Biological StationHickory CornersMichiganGreat LakesphsoilpHphosphoruschemistrycecpotassiumCECInorganic NutrientsDisturbanceLTER Core Research Areacation exchange capacity cations pH nutrient phosphorous soil chemistry cec soil potassium CECfarmingbiotahttps://apps.usgs.gov/thesaurus/thesaurus-full.php?thcode=15Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director. These restrictions are intended mainly to preserve the primary investigators' rights to first publication and to ensure that data users are aware of the limitations that may be associated with any specific data set. These restrictions apply to both the baseline data set and to the data sets associated with specific LTER-supported subprojects.All publications of KBS data and images must acknowledge KBS LTER support.The areas around the Kellogg Biological Station in southwest Michigan-85.404699-85.36685742.42026542.3910191992-11-242023-12-08Kellogg Biological StationData Managerlter.data.manager@kbs.msu.eduhttp://lter.kbs.msu.edu02vkce854KBS LTERSurface (0-25 cm) soil samples are typically collected in the fall, composited by plot, and sent to an analytical laboratory for analysis and for nutrient and liming recommendations for field crops. Analyses include pH, lime index, phosphorus, potassium, calcium, magnesium, and cation exchange capacity. Samples collected in the fall provide liming and fertilizer recommendations for the following year.
Deep cores (0-100 cm) are collected every 5-10 years and samples are analyzed separately by depth interval to monitor longer-term changes in composition with depth.
Sampling frequency: Depends on experiment and research objective.
Agronomic Soil Chemistry – Analytical Lab AnalysisData Managerhttp://lter.kbs.msu.edu/protocols/178The LTER Nitrogen Deposition Study was established in 2001 to examine the effects of increased nitrogen deposition on successional and forested communities. Nitrogen fertilizer is applied annually at three different levels to plots adjacent to Mid-successional (SF), Coniferous Forest (CF) and Deciduous Forest (DF) treatments of the LTER Main Cropping System Experiment (MCSE). Since 2010*, these plots are preferentially fertilized with ammonium nitrate (NH4NO3)† at the following rates:
One-fold fertilization (1F) = 1 g Nitrogen (N) m-2 yr-1= 10 kg N ha-1 yr-1
Three-fold fertilization (3F) = 3 g N m-2 yr-1 = 30 kg N ha-1 yr-1
Ten-fold fertilization (10F in DF only) = 10 g N m-2 yr-1 = 100 kg N ha-1 yr-1
The 1F plots are 100 m2 (10m x 10 m) each, with the exception of CF3 which is 6 m2 (2m x 3 m). The annual application rate is 10 kg N ha-1 as an ammonium nitrate (NH4NO3)† solution, equivalent to 100 g (6 g on CF3) N per plot. N is applied in 3 doses of 3.33 kg N ha--1each diluted to 4 L (2 L on CF3). The three doses are evenly spaced from April through November (after spring thaw through litterfall) and are preferentially applied to all deposition plots on the same day.
The 3F plots are 4 m2 (2m x 2m) each. The annual application rate is 30 kg N ha-1 added in 3 doses of 10 kg N ha-1 each diluted to 2 L per plot.
The 10F plots were added to the DF treatment only in 2007 and are 4 m2 (2m x 2m) each. The annual application rate is 100 kg N ha-1 added in 3 doses of 2 L per plot.
See the Detailed Fertilization Log for specifics on fertilization dates and type of fertilizer applied.
Nitrogen Deposition Study – Fertilizer TreatmentsData Managerhttp://lter.kbs.msu.edu/protocols/121LTER: KBS - Ecological and Social Mechanisms of Resilience in AgroecosystemsprogramNational Science Foundationhttp://dx.doi.org/10.13039/100000001DEB 2224712LTER: KBS - Ecological and Social Mechanisms of Resilience in Agroecosystemshttps%3A%2F%2Fnsf.gov%2Fawardsearch%2FshowAward%3FAWD_ID%3D2224712%26HistoricalAwards%3Dfalsehttps://lter.kbs.msu.edu/datatables/52Kellogg Biological Station LTER: Agronomic Soil Chemistry (KBS066-001)Soil chemistry of surface (0-25 cm) samples collected annually for MCSE Treatments 1-4 and 6 (since 1992), on a near annual basis for Treatments 5, 7 and 8, and less frequently for the unmanaged sites (TCF, TDF and TCF).Agronomic+Soil+Chemistry.csvNone391\ncolumn,no"\https://lter.kbs.msu.edu/datatables/52.csvSample_Datedate the sample was taken onYYYY-MM-DD11987-4-18Treatmentmain site treatmentmain site treatmentReplicatemain site replicatemain site replicateDepthsample depthsample depthpHmeasured pHmeasured pHCECcation exchange capacity in meq/100g soilmilliEquivalentsPerHundredGramrealphosphorusBray P1 phosphorusmilligramsPerGramrealpotassiumpotassiummilligramsPerGramrealcalciumcalciiummilligramsPerGramrealmagnesiummagnesiummilligramsPerGramreallime_indexlime indexdimensionlessrealzn_ppmzincmilligramsPerGramreals_ppmsulfurmilligramsPerGramrealb_ppmboronmilligramsPerGramrealcommentcommentcommentyearyear of the sampleYYYY11987-4-18top_depth_cmthe top depth of the sample as measured from the soil surfacecentimeterrealbottom_depth_cmthe bottom depth of the sample as measured from the soil surface.centimeterreallabthe lab that did the analysisthe lab that did the analysisduplicateduplicate sample sent to the lab to determine within sample consistency. 0 means that no duplicates were sent, a number greater than zero are a label for duplicate samples.duplicate sample sent to the lab to determine within sample consistency. 0 means that no duplicates were sent, a number greater than zero are a label for duplicate samples.https://lter.kbs.msu.edu/datatables/665Kellogg Biological Station LTER: Agronomic Soil Chemistry (KBS066-002)Soil chemistry of surface (0-25 cm) samples occasionally collected from the nitrogen fertilized microplots (1F, 3F and 10F) of the Nitrogen Deposition Study located adjacent to the main plots of the MCSE Mid-successional (SF) and Coniferous (CF) and Deciduous (DF) forested sites. Note that the 0F nitrogen treatment refers to samples collected within the main plot, which is unfertilized.Agronomic+Soil+Chemistry.csvNone381\ncolumn,no"\https://lter.kbs.msu.edu/datatables/665.csvsample_datedate of samplingYYYY-MM-DD11987-4-18habitatsampling habitatsampling habitatnitrogen_treatmentnitrogen application treatmentnitrogen application treatmentnitrogen_application_raterate of N applicationgramsPerSquareMeterrealdepthsoil sampling depthcentimetertextceccation exchange capacity in meq/100g soilmilliEquivalentsPerHundredGramrealzn_ppmzincmilligramsPerKilogramreals_ppmsulfurmilligramsPerKilogramrealb_ppmboronmilligramsPerKilogramreallabthe lab that performed the analysisthe lab that performed the analysisyearsampling yearYYYY-MM-DD11987-4-18