The rootstock trial was planted on May 10, 2004.

Rootstocks: 5 seedling rootstocks

Scions: 'Sunflower' and 'Susquehanna'

Two pruning systems: minimal pruning versus central leader

8 replicate blocks with each treatment combination for a total of 160 trees (2 x 5 x 2 x 8 = 160).