EFFECTS OF DIFFERENT TREATMENTS AGAINST SPILOCAEA OLEAGINA (CAST.) HUGH.

The results are reported of control trials against olive leaf spot induced by Spilocaea oleagina (Cast.) Hugh, in which the following fungicides were comparatively tested: (i) conventional copper oxycloride; (ii) protamin Cu, a new copper product; (iii) tebuconazole, a new systemic product; (iv) dodine. The more effective chemical proved to be copper oxycloride, whose use, however, should be limited to low-yield years as it causes leaf shedding, thus decreased blossoming and productivity. Treatments with protamin Cu and dodine showed a good efficacy. However, in high-yield years, the use of dodine, a no copper-containing product, is suggested. Tebuconazole applications apparently did not reduce infections as compared with the controls.