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Optimization of a Fixed Spraying System for Commercial High-Density Apple Plantings Final Report 2007

Summary: Optimization of a Fixed Spraying System for Commercial High-Density Apple Plantings
Final Report 2007
Arthur Agnello and Andrew Landers
Dept. of Entomology, N.Y.S. Agric. Expt. Station, Geneva, NY
The application of pesticides to fruit throughout the Northeastern US, as in the rest of the
world, gives rise to concern, primarily due to inaccurate application, which often results in high
residues and environmental pollution. Inaccuracy, due to over- or under-application, may result
in high levels of disease or insect activity. Air and water pollution resulting from pesticide drift
is a major concern. There is also a growing concern for food safety and accountability among
consumers who purchase fruit. Surveys of fruit growers of New York, based upon stakeholder
input, show that evaluation of sprayers, sprayer management and fruit coverage issues are a
research priority in tree fruits and apples in particular.
Preliminary Work
In 1998, a fixed spraying system was devised at the NYSAES in Geneva, and preliminary
trials were conducted to measure its efficiency at applying pesticides and controlling insects and
diseases. Spray lines were fixed to metal conduit poles at three different heights and fitted with
microsprinkler nozzles. Preliminary trials were conducted in two blocks each of Red Delicious
and Empire apples on M.9 dwarfing stock located in a research orchard. Tracer solutions, using
micronutrients, were used to monitor spray deposition, and a conventional airblast sprayer was
connected, via a hose, to the spray lines passing through the trees. The fixed line system orchard


Source: Agnello, Arthur M. - Department of Entomology, Cornell University


Collections: Biology and Medicine