A5076293229- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Crop Yield and Soil Fertility
- Agronomic Practices and Intercropping Systems
- Soil erosion and sediment transport
- Plant nutrient uptake and metabolism
- Ruminant Nutrition and Digestive Physiology
- Peatlands and Wetlands Ecology
- Weed Control and Herbicide Applications
- Agriculture Sustainability and Environmental Impact
- Soil Geostatistics and Mapping
- Groundwater and Isotope Geochemistry
- Potato Plant Research
- Phosphorus and nutrient management
- Legume Nitrogen Fixing Symbiosis
- Bioenergy crop production and management
- Soil Management and Crop Yield
- Hydrology and Watershed Management Studies
- Plant responses to water stress
- Microbial Community Ecology and Physiology
- Polymer-Based Agricultural Enhancements
- Odor and Emission Control Technologies
- Pesticide and Herbicide Environmental Studies
- Agriculture, Soil, Plant Science
- Pasture and Agricultural Systems
University of Wisconsin–Madison
2016-2025
University of Wisconsin System
2012-2021
University of Wisconsin–Extension
2012-2019
Federation of American Scientists
2012
United States Geological Survey
2012
University of California, Davis
2010
Intensive crop production on grassland-derived Mollisols has liberated massive amounts of carbon (C) to the atmosphere. Whether minimizing soil disturbance, diversifying rotations, or re-establishing perennial grasslands and integrating livestock can slow reverse this trend remains highly uncertain. We investigated how these management practices affected organic (SOC) accrual distribution between particulate (POM) mineral-associated (MAOM) matter in a 29-y-old field experiment North Central...
Manure management at dairy production facilities, including anaerobic digestion (AD) and solid-liquid separation (SLS), has shown strong potential for the abatement of greenhouse gas (GHG) ammonia (NH3) emissions. However, previous study results are inconsistent combined effect AD + SLS remains to be quantified. This evaluated effects AD, SLS, on GHG NH3 emissions during manure storage through land application over nine months. alone significantly (P < 0.05) reduced total compared untreated...
Measurement of greenhouse gas (GHG) fluxes between the soil and atmosphere, in both managed unmanaged ecosystems, is critical to understanding biogeochemical drivers climate change development evaluation GHG mitigation strategies based on modulation landscape management practices. The static chamber-based method described here trapping gases emitted from surface within a chamber collecting samples headspace at regular intervals for analysis by chromatography. Change concentration over time...
Nitrogenous fertilizers have nearly doubled global grain yields, but also increased losses of reactive N to the environment. Current public investments improve soil health seek balance productivity and environmental considerations. However, data integrating biological crop response date is insufficient reliably drive conservation policy inform management. Here we used multilevel structural equation modeling fertilizer rate trials show that biologically healthier soils produce greater corn...
The North Central Education and Research Activity Committee (NCERA-59) was formed in 1952 to address how soil organic matter formation management practices affect structure productivity. It is this capacity that we comment on the science supporting quality associated health assessment for agricultural lands with goal of hastening progress important field. Even though suite indicators being applied by U.S. efforts closely mirrors 'minimum data set' developed recommended mid-1990s, question...
Abstract Winter cover crop performance metrics (i.e., vegetative biomass quantity and quality) affect ecosystem services provisions, but they vary widely due to differences in agronomic practices, soil properties, climate. Cereal rye (S ecale cereale ) is the most common winter United States its hardiness, low seed cost, high production. We compiled data on cereal metrics, properties across eastern half of States. The dataset includes a total 5,695 observations 208 site-years between...
Abstract To mitigate climate change, some seek to store carbon from the atmosphere in agricultural soils. However, our understanding about how agriculture affects soil organic is muddied by studies (1) lacking longitudinal data, (2) ignoring bulk density changes, or (3) sampling only surface better understand trends, here we measured changes over 30 years density-corrected, full-soil-depth (90 cm) stocks under 6 cropping systems and a restored prairie Mollisol of southern Wisconsin, USA....
Measurement of greenhouse gas (GHG) fluxes between the soil and atmosphere, in both managed unmanaged ecosystems, is critical to understanding biogeochemical drivers climate change development evaluation GHG mitigation strategies based on modulation landscape management practices. The static chamber-based method described here trapping gases emitted from surface within a chamber collecting samples headspace at regular intervals for analysis by chromatography. Change concentration over time...
Abstract Process‐based models are increasingly used to study agroecosystem interactions and N 2 O emissions from agricultural fields. The widespread use of these conduct research inform policy benefits periodic model comparisons that assess the state modeling indicate areas for improvement. This work provides an evaluation simulated flux three process‐based models: DayCent, DNDC , EPIC . were calibrated validated using data collected two sites over five years represent cropping systems...
Many soil health tests quantify some portion of organic matter, through both extractions and incubations. Four such have been identified as potentially useful measurements for farmers to track on their farm, alongside typical routine testing: permanganate oxidizable carbon (POXC), mineralizable (Min C), nitrogen (PMN), autoclaved citrate extractable protein (ACE-N). These indicators related crop yield, but not soybean productivity. Our study relied samples (0–15 cm) field history data from...
Abstract Cereal rye ( Secale cereale L.) as a cover crop can be an effective nonchemical tool for waterhemp [ Amaranthus tuberculatus (Moq.) Sauer] suppression in production. Previous studies have evaluated A. by cereal part of weed management programs but not investigated the underlying mechanism crop. This study aimed to investigate effect biomass on emergence and development, soil environmental parameters (temperature, moisture, light transmittance) that are key triggers germination...
Abstract Evaluating how weather, farm management, and soil conditions impact phosphorus (P) loss from agricultural sites is essential for improving our waterways in watersheds. In this study, rainfall characteristics, manure application timing, tillage, surface condition, test (STP) were analyzed to determine their effects on total (TP) dissolved (DP) using 125 site‐years of runoff data collected by the University Wisconsin Discovery Farms Minnesota. Three linear mixed models (LMMs) then...
Maintaining yield goals while reducing nitrate-nitrogen (NO3-N) leaching to groundwater is a challenge for potato (Solanum tuberosum) production in the Wisconsin Central Sands as well across United States. The objectives of this study were quantify effect conventional and enhanced efficiency nitrogen (N) fertilizers on NO3-N leaching, crop yield, N uptake potatoes. We compared five treatments, which include 0 control 280 kg ha-1 ammonium sulfate nitrate (AS/AN), polymer-coated urea (PCU),...
Core Ideas Radish as a cover crop does not supply nitrogen to the subsequent corn crop. can result in neutral, negative, and positive effects on yield. have substantial uptake fall, but spring soil are variable. ( Raphanus sativus L.) grown accumulate significant amount of N when planted by late summer. However, it remains unclear if radish biomass Zea mays The objectives this project were to: (i) measure growth uptake, (ii) determine effect plant available content throughout growing season,...
The influence of tillage, carbon (C) and nitrogen (N) inputs perennialization on labile fractions soil organic matter (SOM) has been widely investigated, but research the temporal depth variation C N in long‐term agroecosystems representative US Corn Belt is lacking. In this study, as influenced by different agriculture management approaches common north‐central United States were characterized through measurements potentially mineralizable (PMN), (C‐min), permanganate oxidizable (POXC),...
Abstract The amount of soil organic matter (SOM) is considered a key indicator properties associated with higher fertility. Despite the ubiquity assumptions surrounding SOM's contributions to functioning, we lack quantitative relationships between SOM and yield outcomes on working farms. We quantified relationship yields corn ( Zea mays L.) silage for dataset 170 fields arrayed across 49 farms in network growers based Wisconsin Minnesota, USA. As concentrations increase so do yields, though...
Abstract Under the intensifying effects of climate change, agricultural practices that increase soil organic C (SOC) provide an opportunity to offset greenhouse gas emissions. Grazed pasture has potential SOC, but knowledge gaps remain about grazing frequency and intensity on SOC pools. We explored quantity quality in paired pastures row crops across management gradients southern central Wisconsin. On average, had 12.41 Mg ha −1 more surface soils (0–15 cm) than their crop counterparts, were...
The relationship between yield potential and N response in long‐term cereal production is not well known. objective of this study was to evaluate the (yield level) responsiveness winter wheat ( Triticum aestivum L.) maize Zea mays field experiments Stillwater, OK (53 yr), Altus, (two trials, 45 yr each), Arlington, WI (49 Shelton, NE (11 Nashua, IA (32 Kanawha, (26 yr). Nitrogen or index (RI) determined by dividing actual grain from high rate plots either 0‐N fertilizer check (RI 0‐N) medium...