In 2013, in some plantations of black walnuts in the province of Vicenza (Italy), the symptoms of Thousand Cankers Disease (TCD) were detected. TCD is a disease that can kill medium-sized plants very quickly.

The disease is caused by the ascomycete fungus Geosmithia morbida, vectored by the bark beetle Pityophthorus juglandis, both originating in the south-western United States and northern Mexico.

With this study the efficacy of trunk injections of four commercial fungicides and an insecticide in the fight against the G. morbida fungus and the bark beetle P. juglandis was tested.

The results were published in the international journal Phytopathologia Mediterranea:
Dal Maso E., Linaldeddu B.T., Fanchin G., Faccoli M., Montecchio L. (2019). The potential for pesticide trunk injections for control of thousand cankers disease of walnut. Phytopathologia Mediterranea 58(1): 73-79. doi: 10.13128/Phytopathol_Mediterr-23598

https://oajournals.fupress.net/index.php/pm/article/view/5797