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Title:   Author  item
                                            Zhu, Hepingitem
                                            Derksen, Richarditem
                                            Krause, Charlesitem
                                            Brazee, Rossitem
                                            ZONDAG, RANDALL - OSU EXTENSIONitem
                                            Fox, Robertitem
                                            Reding, Michael

                                                         - *Mike*item
                                            OZKAN, ERDAL - OSU
  Submitted to: ASAE Annual International Meeting
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 4/24/2005
                                    Publication  Date: 4/18/2005
                                    Citation: Zhu, H., Derksen, R.C., Krause, C.R., Brazee, R.D., Zondag, R., Fox, R.D., Reding, M.E., Ozkan, E.H. 2005. Spray Deposition and Off-Target Loss in Nursery Tree Crops with Conventional Nozzle, Air Induction Nozzle and Drift Retardant. ASAE Annual International Meeting. Paper No. 051007.Interpretive Summary:
                                Technical Abstract: Spray deposits at various elevations within crabapple trees and on the ground were investigated with an air blast sprayer equipped with conventional hollow cone nozzles, air induction nozzles, and conventional hollow cone nozzles with a drift retardant in a commercial nursery field.  Airborne deposits at three elevations on sampling towers and on the ground at several distances from the sprayer were also investigated with the three spray treatments in an open field without trees.  Droplet size distributions across spray patterns were measured with a laser particle/droplet image analysis system.  In general, there was no significant difference for deposits within nursery tree canopies and on the ground with three different spray techniques.  With the 700 L/ha application rate, which was 360 L/ha lower than the rate normally used in nursery application, the tree canopies received over 4 to 14.5 times spray deposits actually needed from the air blast sprayer with the three spray techniques, and a large portion of spray droplets deposited on the ground.


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