Abstract
In high trees it is often difficult to reach the top of the tree when spraying plant protection products. Especially in crops with narrow tree rows and narrow tree spacing in the row and with dense leaf structures as alley trees in nursery tree growing. Like in orchard spraying a cross-flow fan mast sprayer is developed to target the spray more towards the tree leaf canopy. The development is evaluated in comparison with a standard axial fan sprayer doing spray distribution measurements on a vertical patternator, driving through a collector gate and in practice in a 6 m high tree plantation of Acer platanoides using fluorescent tracer techniques. Results show differences in spray distribution between left and right hand side of the sprayer because of fan characteristics. The effect of nozzle type and air speed of the standard axial fan sprayer on spray distribution is minimal; highest spray deposit remains at 1-2.5 m height. The mast sprayer increases spray deposit in the tree crown (2-6m high) and increases homogeneity of the distribution. Standard flat fan nozzles have higher deposits than hollow cone nozzle of the same size and operated at the same pressure.
| Original language | English |
|---|---|
| Title of host publication | 8th Workshop on Spray Application Techniques in Fruit Growing June 2005 Barcelona |
| Subtitle of host publication | Book of Abstracts |
| Editors | E. Gil, F. Solanelles, S. Planas, J.R. Rossell, L. Val |
| Place of Publication | Barcelona |
| Publisher | Universitat de Lleida |
| Pages | 113-120 |
| Number of pages | 8 |
| Publication status | Published - 2005 |
| Event | 8th Workshop on Spray Application Techniques In Fruit Growing - Duration: 29 Jun 2005 → 1 Jul 2005 |
Workshop
| Workshop | 8th Workshop on Spray Application Techniques In Fruit Growing |
|---|---|
| Period | 29/06/05 → 1/07/05 |
Keywords
- nursery trees
- mast sprayer
- axial fan sprayer
- spray distribution
- nozzle type
- air assistance