“…Very similar was the production per hectare, which was modest in Sillano 2008, but acceptable considering the seasonal drought; it was satisfactory in Camporgiano 2009 and even more in Sillano 2009, where the higher fruit set, helped by lower summer temperatures, more than offset the lower number of seed clusters. The yields substantially confirmed those already found by the authors in previous experiments in the same area (Tallarico et al, 2008(Tallarico et al, , 2009 (Baldassi, 1998), 1.75 t/ha (Bavec et al, 2002), 0.76÷1.53 t/ha (Brunori et al, 2005). In accordance with the yield was also the harvest index, significantly higher in Sillano 2009 where there was the maximum formation of achenes, even in the presence of a limited vegetative growth, thanks to the better environmental conditions.…”