April 27, 2011:
We hooked up the tunnel sprayer and ran it for the first time over trees. All worked remarkable well.
1. The sprayer certainly is tall!
2. It is much much quieter than an airblast.
3. It is not easy to manage behind the tractor and will require some adjustments and practice.
4. We had a significant wind parallel with the row direction -- with these trees with very few leaves, spray material was blown out of the sprayer. Drift was limited to the row being sprayed, for the most part.
Next week, we will begin to assess coverage and spray material usage in comparison with standard airblast application.