Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
Stakeholder Development of Agricultural Management Practices in Orchards to Reduce Pesticides in Surface Water Following Dormant Applications in Winter
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org
Citation: Pp. 168-172 in Total Maximum Daily Load (TMDL) Environmental Regulations: Proceedings of the March 11-13, 2002 Conference, (Fort Worth, Texas, USA) 701P0102.(doi:10.13031/2013.7546)
Authors: P.N. Klassen, B.L. Bret, R.C. Ehn, S.L. Gill, J.M. Lee, G.L. Obenauf, M.N. Oliver, W.H. Olson, I. Werner, F.G. Zalom
Keywords: Agriculture, BMP, Sacramento River, Orchard, Pesticide, Pest management, Stakeholder process, Surface water, TMDL, Water quality
The Organophosphate Pesticide Focus Group is a stakeholder working group of the Sacramento River
Watershed Program (SRWP) that was formed to address the development of a TMDL for diazinon in the
Sacramento River in northern California. The groups primary objective is to develop a water quality
management strategy to reduce diazinon runoff in the watershed following dormant (winter-time) orchard
sprays to fruit and nut trees in northern California.
(Download PDF) (Export to EndNotes)
The water quality management strategy is largely dependent on the activities of the Ag Implementation
Group, which was organized to develop a strategy and a set of self-directed (voluntary) Agricultural
Management Practices (AMPs) that when implemented, will significantly decrease the negative impact of
pesticide use on the natural resources of the Sacramento River Watershed. The practices being evaluated
have been grouped into three categories:
1. On-Site Practices for Runoff Reduction - Includes cover crops, vegetative filter strips, grassed
waterways, water and sediment control basins, berms at low ends of fields, etc.
2. Selection of Pest Management Strategies - Includes alternate year dormant applications, no
dormant sprays/in-season as needed, conventional non-OP dormant sprays, bloom-time sprays,
pheromone mating disruption, and other pest management strategies. Decisions are based upon field
scouting and the use of pest management models.
3. Application Methods When and where applications are required, includes use of setback/buffer
zones, drift mitigation practices, sprayer calibration, nozzle selection, electronic sensors, new
equipment technology, etc.
A broad menu of management practices has been incorporated into the strategy from which growers can
voluntarily select, choosing the combination of practices that best suit their site(s), operations, and needs.