A5074918860- Soil and Water Nutrient Dynamics
- Soil Geostatistics and Mapping
- Hydrology and Watershed Management Studies
- Crop Yield and Soil Fertility
- Remote Sensing in Agriculture
- Soil erosion and sediment transport
- Smart Agriculture and AI
- Soil Carbon and Nitrogen Dynamics
- Remote Sensing and LiDAR Applications
- Soil and Unsaturated Flow
- Irrigation Practices and Water Management
- Potato Plant Research
- Spectroscopy and Chemometric Analyses
- Soil and Land Suitability Analysis
- Water Quality and Resources Studies
- Wastewater Treatment and Nitrogen Removal
- Remote Sensing and Land Use
- Agricultural Economics and Policy
- Groundwater flow and contamination studies
- Pesticide and Herbicide Environmental Studies
- Soil Mechanics and Vehicle Dynamics
- Hydrology and Sediment Transport Processes
- Groundwater and Isotope Geochemistry
- Sustainable Agricultural Systems Analysis
- Bioenergy crop production and management
University of Minnesota
2015-2024
University of Minnesota System
2017-2024
Institute for Soil, Climate and Water
2007-2018
Twin Cities Orthopedics
2017
Applied Natural Sciences
2014
Washington State University
1987-2013
Soil Science Society of America
2013
In-Q-Tel
2004
Saskatchewan Ministry of Agriculture
1996
University of Missouri
1994
Geostatistics brings to ecology novel tools for the interpretation of spatial patterns organisms, numerous environmental components with which they interact, and joint dependence between organisms their environment. The purpose this paper is use data from ecological literature as well original research provide a comprehensive easily understood analysis geostatistics' manner modeling methods. traditional geostatistical tool, variogram, tool that beginning be used in ecology, shown an...
We study two new informative path planning problems that are motivated by the use of aerial and ground robots in precision agriculture. The first problem, termed sampling traveling salesperson problem with neighborhoods (SAMPLINGTSPN), is scenarios which unmanned vehicles (UGVs) used to obtain time-consuming soil measurements. input SAMPLINGTSPN a set possibly overlapping disks. objective choose location each disk tour visit locations so as minimize sum travel measurement times. second...
The economically optimum N rate (EONR) required for corn ( Zea mays L.) may vary spatially due to variation in soil characteristics and temporally the interactions of environmental factors. objectives this research were quantify impact field variability on yield response fertilization evaluate temporal stability these functions. A production near Revere, MN, was cropped with 1995, 1997, 1999 rotation soybean [ Glycine max (L.) Merr.]. Four replications seven treatments established a...
Fez is the most ancient of imperial cities Morocco. In rate population growth has been spectacular in recent times (484,300 inhabitants 1982 and 1,129,768 2014). The accelerated generated a large urban sprawl all its forms serious environmental problems. this research, we have analyzed relationship between urbanization land use changes their impact on cityscape importance increase impervious surface areas. Satellite imageries census data used to identify different patterns change city for...
Nutrients in drainage waters from the Upper Mississippi River Basin states have been a well-documented contributor to Gulf of Mexico hypoxic zone for decades, and response, twelve developed strategies address this issue, with Iowa, Minnesota, Illinois performing rigorous science assessments which estimated nitrogen phosphorus reduction effectiveness numerous agricultural non-point source conservation practices. The practices identified these were compared identify areas consensus discord on...
The downstream part of the Essaouira basin, Morocco, Northwestern Africa. This study combines multivariate statistical analyses, stable isotopes, hydrogeochemical, hydrogeological, geological and remotely sensed data to gain a better understanding hydrological groundwater salinization processes in coastal aquifer. Hydrogeochemical from 223 samples as well isotope collected during 10 sampling campaigns between 1990 2020 were compiled subjected comprehensive analysis. Groundwater recharge...
Abstract Soils from citrus groves that had been fertilized with the equivalent of approximately 175 kg P/ha per year [as treble superphosphate (TSP)] over a 36‐year period were sampled and analyzed for total P, Cd, Zn as well water‐soluble P Cd. A fertilization rate kg/ha (about 400 2 O 5 /ha) is much higher than normal field rates, which are typically about 30 kg/ha. Concentrations Cd in surface soil highly correlated ( r = 0.89) concentrations P. The receiving broadcast 36 years averaged...
We study the problem of coordinating an Unmanned Aerial Vehicle (UAV) and Ground (UGV) for a precision agriculture application. In this application, ground aerial measurements are used estimating nitrogen (N) levels on-demand across farm. Our goal is to estimate N map over field classify each point based on deficiency levels. These estimates in turn guide fertilizer Applying right amount at time can drastically reduce usage. Towards building such system, paper makes following contributions:...