A5052385176- Remote Sensing in Agriculture
- Soil Geostatistics and Mapping
- Soil and Unsaturated Flow
- Remote Sensing and LiDAR Applications
- Smart Agriculture and AI
- Soil Carbon and Nitrogen Dynamics
- Greenhouse Technology and Climate Control
- Soil and Water Nutrient Dynamics
- Soil Moisture and Remote Sensing
- Geophysical Methods and Applications
- Crop Yield and Soil Fertility
- Soil erosion and sediment transport
- Landslides and related hazards
- Agriculture, Soil, Plant Science
- Hydrology and Watershed Management Studies
- Geochemistry and Geologic Mapping
- Plant Water Relations and Carbon Dynamics
- Soil Management and Crop Yield
- Air Quality Monitoring and Forecasting
- Soil and Land Suitability Analysis
- Agricultural Science and Fertilization
- Soil Mechanics and Vehicle Dynamics
- Turfgrass Adaptation and Management
- Magnetic and Electromagnetic Effects
- Gene expression and cancer classification
Texas A&M University
2014-2024
Washington State University
2010-2024
University of Alaska Fairbanks
2010
Advances in automation and data science have led agriculturists to seek real-time, high-quality, high-volume crop accelerate improvement through breeding optimize agronomic practices. Breeders recently gained massive data-collection capability genome sequencing of plants. Faster phenotypic trait collection analysis relative genetic leads faster better selections improvement. Furthermore, higher-resolution greater for scientists growers improve precision-agriculture practices on increasingly...
Despite farmers' knowledge and awareness of soil health practices the growing body evidence indicating their effective use, many farmers continue to reject such practices. To further explore role information source credibility in adoption practices, we sought measure wheat perceived research scientists, Extension industry general scientists likelihood they would adopt about reduced no-till cover crop from these sources. Using an experimental survey instrument, collected data 127 U.S....
Canopy temperature in cotton (Gossypium hirsutum) and other crops is related to crop soil water status. Multiple approaches have been used measure canopy temperature, depending on the application of data available technology. Recent technological advances made it possible map using thermal cameras onboard unmanned aerial systems (UAS) at fine spatiotemporal resolution. Using a highly accurate UAS-mounted infrared camera, objective this study was determine relationships in-season with seed...
The development of a robust method to non-invasively visualize root morphology in natural soils has been hampered by the opaque, physical, and structural properties soils. In this work we describe novel technology, low field magnetic resonance imaging (LF-MRI), for energy sorghum (Sorghum bicolor (L.) Moench) architecture intact use fields much weaker than those used with traditional MRI experiments reduces distortion due material naturally present agricultural A laboratory based LF-MRI...
Accurate and reliable calibration methods are required when applying unmanned aerial vehicle (UAV)-based thermal remote sensing in precision agriculture for crop stress monitoring, irrigation planning, harvesting. The primary objective of this study was to improve the accuracies UAV-based images using temperature-controlled ground references. Two references were installed field serve as high- low-temperature references, approximately spanning expected range surface temperatures during...
The next generation of plant breeding progress requires accurately estimating growth and development parameters to be made over routine intervals within large field experiments. Hand measurements are laborious time consuming the most promising tools under sensors carried by ground vehicles or unmanned aerial vehicles, with each specific vehicle having unique limitations. Previously available have primarily been restricted monitoring shorter crops early in corn sorghum, since plants taller...
A wide variety of soil sampling methods have been adopted, yet limited research has addressed how can impact results particularly for spatially variable properties. To address these concerns, we intensively sampled two existing health trials in Texas analysis extracellular enzymatic activities (EEAs), permanganate oxidizable C (POXC), organic (SOC), and pH. The data generated was used to quantify the effect composite sampling, position (in-row vs between-row), number samples on statistical...
The Soil Management Assessment Framework (SMAF) has been widely used as a tool to quantify soil health. However, SMAF was developed using data from only few climate conditions in the United States and regional verification is often suggested. We evaluated SMAF's short-term performance thermic/hyperthermic region, aiming 1) evaluate sensitivity of scores changes individual properties 2) health SMAF. Treatments include two levels summer crop tillage an annually planted wheat system. metrics...
Core Ideas Desiccation cracks make runoff and infiltration predictions difficult in expansive soils. A crack‐volume model based on water content soil properties was developed. Crack volume measured situ using digital photography of excavated layers. The new improved crack estimates over a layer thickness. critical gap hydrology knowledge is predicting the partition during rainfall events shrink‐swell soils with desiccation cracks. Knowledge surface cracking needed, but field measurements...
Tissue nitrate (NO 3 ) concentration (TNC) in leafy greens generally decreases with increasing light intensity and photoperiod controlled environment studies. Harvesting late the day has been recommended as a way to produce lower TNC, although data from field research do not support this recommendation. This study investigated effect of time harvest on TNC lettuce ( Lactuca sativa L.) spinach Spinacia oleracea grown during summer at Pullman, WA (lat. 46° N) Fairbanks, AK 64° N). Whole plants...
Errors associated with current methods for measuring in situ vertical soil shrinkage related to water loss are measurements being spatially disconnected, which introduces unknown spatial variability and excessive disturbance during installation. To minimize these errors, a method was developed measure changes thicknesses of multiple layers single borehole. Soil layer thickness measured by tracking the location magnets sidewall borehole using probe magnetic field sensor. The sensor capable...
Core Ideas Bulk density changes caused large uncertainties in neutron moisture meter calibrations. Air‐ or water‐filled annuli around access tubes simulated voids to measure error. Error magnitude depended on void size and contrast between soil water content. Experimental results showed much smaller errors than previous numerical simulations. Larger reduced sensitivity of (NMM) have been cited as sources volumetric content (θ v ) measurement error cracking clay soils. The objectives this...
As small unmanned aircraft systems become increasingly affordable, reliable, and formally recognized under federal regulation, they attractive as novel platforms for civil applications. This paper details the development demonstration of fixed-wing precision agriculture tasks. Tasks such soil moisture content high throughput phenotyping are considered. Rationale sensor, vehicle, ground equipment selections provided, in addition to developed flight operation procedures minimal numbers crew....
Core Ideas US aerial gamma radiometrics were analyzed with legacy soil data. Relationships for and soils data differed by physiography geology. Gamma could best map texture within relatively flat landscapes. A where is most useful mapping provided. have recently been connected properties at field scales (10 m) thus may potential to characterize across regional using from preexisting surveys. However, the relationship between γ these larger spatial extents (100–1000 km) has largely...
Abstract In dryland region of the inland Pacific Northwest (iPNW), two‐year winter wheat–fallow rotation is associated with wind erosion and a decline in soil organic carbon (SOC) overall health. The use biosolids, produced as by‐products municipal wastewater treatment, agriculture gaining traction an effective way to improve SOC nutrient availability. While immediate benefits biosolids application have been studied some extent, there still lack research‐based information on persistence...
Abstract Application of biosolids can be beneficial for low carbon (C) and erosion‐prone soils the dryland region inland Pacific Northwest (iPNW). Biosolids have been proven to improve wheat yields soil health in iPNW. Although direct agronomic environmental influences with frequent applications extensively studied, research‐based information on persistence long‐term residual or ‘legacy’ effects only rarely reported. Therefore, this study was conducted understand longevity impacts 7 years...
The goal of precision agriculture is to increase crop yield while maximizing the use efficiency farm resources. In this application, UAV-based systems are presenting agricultural researchers with an opportunity study response environmental and management factors in real-time without disturbing crop. spatial variability soil properties, which drive quality, cannot be changed thus keen agronomic choices mind have potential profits. Additionally, measuring stress over time conditions may enable...