A5013785065- Soil and Water Nutrient Dynamics
- Wastewater Treatment and Nitrogen Removal
- Soil Carbon and Nitrogen Dynamics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Crop Yield and Soil Fertility
- Phosphorus and nutrient management
- Hydrology and Watershed Management Studies
- Agricultural Science and Fertilization
- Plant Micronutrient Interactions and Effects
- Allelopathy and phytotoxic interactions
- Soil erosion and sediment transport
- Constructed Wetlands for Wastewater Treatment
- Plant Pathogens and Fungal Diseases
- Fish Ecology and Management Studies
- Plant Pathogens and Resistance
- Peatlands and Wetlands Ecology
- Yeasts and Rust Fungi Studies
The Ohio State University
2010-2025
The Ohio State University at Marion
2016-2017
University of Wisconsin–Extension
2015
University of Missouri
1989
Core Ideas Soil test phosphorus remains an important factor in studying dissolved reactive P loss. Identifying higher risk fields with STP could inform future management practices to reduce DRP was linearly related concentration loads tile‐drained fields. Monitoring addition implementing other BMPs should be considered decrease Harmful and nuisance algal blooms resulting from excess (P) have placed agriculture the spotlight of water quality debate. Sixty‐eight site years loading data...
Agricultural phosphorus (P) loss has been linked to the eutrophication of surface water bodies throughout world. As a result, minimizing offsite P transport become priority in many rural watersheds. In US Midwest and other subsurface tile-drained regions, there is critical need identify nutrient management practices that decrease both discharge. An edge-of-field (EOF) network monitoring 38 agricultural fields was established northwest Ohio, United States, quantify impacts prevailing novel...
Elevated phosphorus (P) loading from agricultural nonpoint-source pollution continues to impair inland waterbodies throughout the world. The application of flue gas desulfurization (FGD) gypsum fields has been suggested decrease P because its high calcium content and sorbing potential. A before-after control-impact paired field experiment was used examine water quality effects successive FGD applications (2.24 Mg ha; 1 ton acre each) an Ohio with soil test levels (>480 ppm Mehlich-3 P)....
Extreme precipitation events affect water quantity and quality in various regions of the world. Heavy 2019 resulted a record high area unplanted agricultural fields U.S. especially Maumee River Watershed (MRW). March–July phosphorus (P) loads from MRW drive harmful algal bloom (HAB) severity Lake Erie; hence changes management that influence P export can ultimately HAB severity. In this study, we found dissolved reactive (DRP) load was 29% lower than predicted, while particulate (PP) similar...
Mid-season applications of Quadris with and without Warrior insecticide were evaluated in 2004 2005, Headline, Folicur, Domark, or Headline plus Folicur 2006, 2007, 2008 37 farm scale studies Ohio. Producer cooperators selected fields, applied treatments at growth stage R3 harvested fields. Each trial was rated R5 R6 for incidence severity brown spot frogeye leaf spot. Aphids foliar disease low 2004. Soybean aphids counted 2005. Brown reduced significantly by seven the 13 locations. In...
Abstract The average annual corn ( Zea mays L.) grain yield in Ohio has increased since the 1970s, yet respective roles of hybrids and optimal nitrogen (N) fertilization contributing to this historical trend remain unclear. This study evaluated trends agronomically rate (AONR) at (YAONR) when followed (CC) or soybean [ Glycine max (L.) Merr.] (SC) crop rotation within two eras hybrid development. were associated with different technological development phases, including 1976–1995...
Abstract Soil test phosphorus (P) and potassium (K) the associated soil critical values (CSTVs) are widely used as primary diagnostic tool to determine if a crop needs P K fertilizer. However, identifying robust predictive CSTVs requires large number of field trials in representative soils environments assess fertilizer responses. From 1976 2021, total 457 458 were conducted corn ( Zea mays ), soybean Glycine max wheat Triticum aestivum ) across 40 counties Ohio. The consisted both...
Abstract Extension has a long history of conducting educational programs for agricultural producers on wide array issues, including water quality. In Ohio, the focus these efforts grown to include best management practices nutrient management. The need education in began earnest 1970s due presence harmful algal blooms (HAB) Western Lake Erie Basin. International actions taken during that time all but eliminated HABs from lake until they made resurgence 1990s. Twenty years later, HAB threat...
Legacy nutrients stored in agricultural soils are a substantial component of riverine nutrient discharge contributing to the eutrophication aquatic ecosystems. These loads can persist and delay water quality initiatives, for example, those Great Lakes Water Quality Agreement which seek reduce phosphorus (P) entering Western Lake Erie Basin. In this watershed, approximately 5% fields have P concentrations 2.5-fold greater than maximum agronomic recommendations corn soybeans. Fields with these...