In most trial years, both Rocket and Maris Bard showed substantial increases in marketable yields when compared with Superior. This is true especially in Ontario, PEI and Quebec during the 1997 season which was characterized by various degrees of drought. Rocket has the capacity to perform as a true early variety if planted very early in the season. C arlingford and Saxon are midseason maturing, round white varieties with a very attractive skin finish and shallow eyes. Carlingford produces a high number of uniform, white fleshed tubers per plant.
Saxon tubers are bright and have very pale cream coloured flesh.
Both varieties are well suited for the poly bag and count box trade. They have been well received by several commercial packing and washing lines. Its high specific gravity and encouraging processing characteristics have the potential to make it a suitable variety for chipping as well. For the end user, Sierra 's baking and frying attributes are similar to or better than Yukon Gold.