uid=KBS,o=lter,dc=ecoinformatics,dc=orgalluid=sbohm,o=lter,dc=ecoinformatics,dc=orgallpublicreadhttps://lter.kbs.msu.edu/datasets/230.emlWeed and Fertilizer Study in T3 and T4 at the Kellogg Biological Station, Hickory Corners, MI (2006 to 2014)NicholasHaddadMichigan State University3700 E Gull Lake DriveHickory Corners49060UShaddad@kbs.msu.edu0000-0002-1591-9322G.RobertsonMichigan State University3700 East Gull Lake DriveHickory CornersMI49060US(269) 760-8364(269)671-2351robert30@msu.edu0000-0001-9771-9895original investigatorJosephSimmonsMichigan State University3700 East Gull Lake DriveHickory CornersMI49060(269) 671-2528(269)671-2104simmonsj@kbs.msu.eduprincipal contact2026-05-20Dataset Abstractoriginal data source http://lter.kbs.msu.edu/datasets/230LTERKBSKellogg Biological StationHickory CornersMichiganGreat LakesPrimary ProductionDisturbancePopulationsLTER Core Research Areafarmingbiotahttps://apps.usgs.gov/thesaurus/thesaurus-full.php?thcode=15Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director.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-85.404699-85.36685742.42026542.3910192006-09-192014-11-05Kellogg Biological StationData Managerlter.data.manager@kbs.msu.eduhttp://lter.kbs.msu.edu02vkce854KBS LTERAboveground net primary production (ANPP) is a measure of plant carbon (and energy) capture as estimated by annual biomass accumulation. For herbaceous plants, whether annual or perennial, aboveground plant material is hand-clipped at peak biomass, oven dried, and weighed. For woody plants, both wood and leaf production must be measured. Wood production is estimated using allometric equations that predict annual changes in mass based on annual changes in stem diameter. Leaf production is estimated by collecting litterfall in traps placed on the ground. ANPP is expressed as plant dry mass accumulated per unit area per year (g/m2/y).
Sampling frequency: Depends on MCSE treatment; a minimum of once per growing season, at peak biomass prior to harvest or as described below, or throughout the growing season for crops with multiple harvests.
Aboveground Net Primary Production - MCSEData Managerhttp://lter.kbs.msu.edu/protocols/191LTER: 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/379Kellogg Biological Station LTER: Agronomic Yields of the Weed and Fertilizer Study (KBS020-004)Agronomic grain yields of corn, soybean, and wheat, at standard moisture, from the Weed and Fertlizer Study in MCSE Treatments 3 and 4 microplots.Agronomic+Yields+of+the+Wed+and+Fertilizer+Study.csvNone271\ncolumn,no"\https://lter.kbs.msu.edu/datatables/379.csvsample_dateharvest dateYYYY-MM-DD11987-4-18treatmenttreatmenttreatmentreplicatereplicatereplicateweed_controlweed control treatment (BAU = 'business as usual', Weed Free='additional weed control', No control = ' no weed control')weed control treatment (BAU = 'business as usual', Weed Free='additional weed control', No control = ' no weed control')fertilizer_treatmentindicates if the plot was fertilized.indicates if the plot was fertilized.cropcrop grown on the plotcrop grown on the plotyield_bu_aagronomic yield in bushel per acre at standard moisturesbushelPerAcrerealyield_kg_haagronomic yield in kilograms per hectare at standard moistureskilogramsPerHectarerealhttps://lter.kbs.msu.edu/datatables/767Kellogg Biological Station LTER: Non-crop Biomass of the Weed and Fertilizer Study (KBS150-001)To estimate weed pressure, the aboveground biomass of non-crop species in the Weed and Fertilizer Study microplots was sampled just before harvest of main crops and cover crops. Plants within a quadrat were clipped at ground level, either sorted to species, or into grasses and forbs, or left unsorted, then dried and weighed.Non-crop+Biomas+of+the+Wed+and+Fertilizer+Study.csvNone301\ncolumn,no"\https://lter.kbs.msu.edu/datatables/767.csvsample_datethe sample dateYYYY-MM-DD11987-4-18treatmentthe treatment namethe treatment namereplicatethe replicate plotthe replicate plotweed_controlthe weed control treatmentthe weed control treatmentfertilizer_treatmentthe fertilizer treatmentthe fertilizer treatmentspecies_codethe KBS species codethe KBS species codespeciesthe species collectedthe species collectedbiomass_g_m2the dry biomass collectedgramsPerSquareMeterrealarea_sampledthe sample area cut to collect the samplesquareMeterrealcommentany comments about this sampleany comments about this sample