Implications of Nutrient Fate and Transport Following Nanopesticide Applications in Agricultural Field Plots in Central Kentucky

Details

• Journal Article:
  Toxics
• Personal Author:
  Rud, William ; Montaño, Manuel D. ; Miller, Daniel N. ; Sanderson, Wayne T. ; Agouridis, Carmen ; Benner, Brianna F. ; Messer, Tiffany L.
• Description:
  The potential benefits of nanopesticide use over standard pesticides include more precise application at reduced application rates, lower premature degradation, and decreased direct impacts to target organisms. However, field scale investigations of the fate and transport of common nanopesticides such as copper (II) hydroxide and imidacloprid combinations, remain limited. A field study evaluating nano-scale copper (II) hydroxide (Cu), standard imidacloprid (I), nanoimidicloprid (NI), and nano-scale copper (II) hydroxide and imidacloprid (CuNI) compared to control (C) plots was conducted using thirty 14.6 m2 field plots to determine the impacts of nanopesticide applications on nutrient cycling and quantify the persistence of copper (II) hydroxide in soil and surface runoff during the growing season. Soil samples were taken at the beginning and end of the growing season, while water quality runoff samples were collected following eleven rainfall events. Ammonium concentrations in runoff decreased in CuNI plots by 1.74 mg N/L, while total nitrogen concentrations in runoff increased by 1.29 mg N/L in Cu plots compared to CuNI plots. Runoff orthophosphate concentrations decreased in CuNI treatments compared to all other pesticide treatments by 1.37, 1.32, and 1.30 mg P/L in Cu, I, and NI plots, respectively. Significant increases in soil copper concentrations were also observed in all plots receiving Cu. These findings emphasize the potential biogeochemical implications of using these nanopesticides on nutrient cycling in agroecosystems.
• Subjects:
  Agriculture Insecticides Occupational Health Safety
• Keywords:
  Author Keywords: Nanopesticides; Emerging Contaminants; Copper Hydroxide; Agroecosystems; Nutrients; Runoff; Agriculture Pesticides; Nanotechnology; Soil Analysis; Agriculture; Environmental Contamination; Agricultural Chemicals;
• Source:
  Toxics 2025 Sep; 13(9):758
• ISSN:
  2305-6304
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  Kentucky ; Washington ; Nebraska ; Birmingham Region [OSHA] ; San Francisco Region [OSHA] ; Kansas City Region [OSHA]
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  13 pdf pages
• Volume:
  13
• NIOSHTIC Number:
  nn:20071311
• Contact Point Address:
  William Rud, Biosystems and Agricultural Engineering Department, University of Kentucky, 128 Barnhart, Lexington, KY 40506, USA
• Email:
  william.rud@uky.edu
• CAS Registry Number:
  Imidacloprid (CAS RN 138261-41-3) ; Copper hydroxide (CAS RN 20427-59-2)
• Federal Fiscal Year:
  2025
• NORA Priority Area:
  Agriculture, Forestry and Fishing
• Performing Organization:
  University of Kentucky
• Peer Reviewed:
  True
• Start Date:
  20010930
• End Date:
  20270929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:060fd6f08e7022ec906bbcb1ce8f1252ec23f2b101d242b92a074e29c66b7337208dccce86bd6280011d2589389f8e0aa4e64c976446ddde91c04230e4aa176b
• Download URL:
  https://stacks.cdc.gov/view/cdc/258787/cdc_258787_DS1.pdf
• File Type:
  [PDF - 709.64 KB ]