A new version of prototype for mechanical distribution of natural enemies

The aim of this research is to assess the performances of a new version of the device patented by University of Catania and already used in natural enemy distribution trials on greenhouse vegetable crops. The prototype has been designed and constructed by Mechanics Section of DIA in order both to increase the work capacity and to promote a low impact pest control, which respects the environment and consumers' and farmers' health. This version has the same working principle of the former prototype, but materials and dimension of the hopper, the distributor and the rotating disc have been changed. Moreover it has a handle directly carried by the worker. From the laboratory trials, the dosage and distribution mechanism of the prototype seem well suited to biological pest control strategies. Negligible or absent impact on natural enemies proves prototype efficacy and enables its usage both with technical and economic advantages on manual distribution. With this model the device performance is improved in manoeuvrability. Consequently, greater work capacity and higher work quality will be achieved in greenhouses and in field.