Tree Fruit Research & Extension Center

Apple IPM Transition Project

Efficient Use of Speed Sprayer Technology

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Orchard Information

tree height (ft)
canopy drip line (tree radius, ft)
lower canopy distance from ground (ft)
tree spacing (ft)
drive row spacing (ft)

Tractor/Sprayer Information

fan (cfm, sm PTO @35,000; lrg engine @60,000)
tractor speed (mph)
fan height from ground (ft)
ducting angle

 

time to turn (seconds)
drive row length (ft)
orchard side (=orchard width, ft)

 

Effect of Tractor Speed on Air Displacement

Effect of Tractor Speed on Time to Spray an Acre

End Calculations

 

 

 

 

WSU-Tree Fruit Research & Extension Center, 1100 N Western Ave., Wenatchee, WA 98801 509-663-8181, Contact Us