... Voinești, in the period 2007-2012, had as object of study 13 disease-resistant apple tree cultivars in a highdensitysystem, grafted on M 9 rootstock, respectively: 'Ariwa', 'Golden Lasa', 'Goldrush', 'Enterprise', ...
... in the period 2007-2011, had as object the study of 13 disease-resistant apple tree varieties, cultivated in the highdensitysystem, grafted on the graft bearer M 9, respectively: Ariwa, Golden Lasa, ...