22 Feb 2022
Reducing pesticide transport in surface and subsurface irrigation return flow in specialty crop production
Damon E. Abdi (Michigan State), James S. Owen Jr. (Virginia Tech), P. Christopher Wilson and Francisca O. Hinz (University of Florida), Bert Cregg and R. Thomas Fernandez (Michigan State)
Pesticides are most commonly transported in water. Excess irrigation water returns to the surrounding environment mainly via irrigation return flow (IRF- surface runoff and subsurface infiltration). We investigated irrigation methods (overhead at 0.75 inch/day, and an overhead treatment and a spray stake treatment based on soil moisture sensors) to determine effects on IRF volume and transport of pesticides. Learn about irrigation management practices that effectively limit pesticide movement, particularly highly mobile compounds.
Read the research article here
19 Oct 2021
A nursery system nitrogen balance for production of a containerized woody ornamental plant
Bruno J.L. Pitton, Lorence R. Oki, Jared Sisneroz, and Richard Y. Evans (University of Califronia, Davis)
Crop producers should identify nitrogen (N) inputs and outputs to calculate potential N available for leaching into groundwater to reduce nitrate contamination in intensive agricultural production areas. However, poor understanding of N fate in container plant production may result in inaccurate estimation of potentially leachable N. To improve understanding of container-applied N fate, an experiment was conducted to measure N inputs and outputs from a woody ornamental plant (Lagerstroemia indica ‘Whitt II’) production system fertilized with controlled-release and surface-applied fertilizer.
Read the research article to understand the impact nursery production has on nitrate contamination of groundwater
4 Oct 2021
Specialty crop retention reservoir performance and design considerations
Mohammed Nayeb Yazdi (Ohio State University), James S. Owen Jr (USDA), Steve W. Lyon (Ohio State University), and Sarah A. White (Clemson University)
Specialty crop production requires large volumes of water for irrigation and faces four interconnected water resource concerns: (1) water availability and security, (2) need for high water quality (3) management of irrigation return flow and operational water quality from production areas, and (4) increasing consumer and regulatory pressure to mitigate non-point source runoff. Retention reservoirs are an effective best management practice for extending water resources and reducing an adverse effect on the environment.
Read the research article to learn about various treatment processes within retention reservoirs in specialty crops.