We have received a NE-SARE Farmer grant for this project and will be building and trialing the sprayer in 2014 and 2015. Andrew Landers from Cornell will provide technical assistance to the project.
The goal is to develop a modular sprayer which will have attachments suitable for spraying trellised, staked and low to the ground crops in a high tunnel. We have used both Solo backpack and caddy style sprayers with hand wands/guns and found them to be both slow and inaccurate. The sprayer we will build should take less time to get through the tunnel than our existing sprayer and do a better job of applying materials uniformly and at the label rate.
I'm interested in learning what other growers, especially organic growers, are using to spray in their tunnels, the materials they are trying to apply and the concerns they have with their current sprayer and spraying method. The materials we have used in our tunnels include Kaligreen, pyganic 1.4, entrust and neem products.