Experimental tests on a specific machine for distribution of pesticides in vineyards of Apulian Region: size and ecological criteria

The goal of the present research is to define size criteria for the design of specific machines for the distribution of pesticides in wine-growing context of Apulia Region, through the development of the experimental results. It was designed and realized a specific version of pulled straddle sprayer, air convection type, single-row, characterized by a spraying tunnel and a recovery system of the product that has not affected the plant. The innovations characterizing the machine are mainly the type, position and orientation of the of air flow system, in the shielding and in the geometry of the straddle tunnel, by which were taken into account the sizes and types of cultivation of local cultivars, for which there are currently no machines on the market. The prototype was tested by standstill distribution trials and tank filled with water. Based on the results, we are modifying the prototype in order to reduce its overall lateral dimension, the fenders width (in particular the one opposite to the panel), the shortening of the support ends, the repositioning of the hydraulic circuit. Key-Words: Tunnel sprayer prototype, Apulian vineyard, spray recovery, air distribution, design criteria.