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- Author or Editor: Robert Crass-weller x
`Fuji' apple trees [Malus ×sylvestris (L.) Mill. Var domestica. (Borkh.)] on five semidwarfing rootstocks (CG.4814, CG.7707, G.30N, M.26 EMLA, and M.7 EMLA) were planted at nine locations (CA, KY MO NC OH PA SC UT and WA) under the direction of the NC-140 Multistate Research Project. After four growing seasons (through 2002), trees on CG.7707 and M.7 EMLA were the largest, and those on M.26 EMLA were the smallest. M.7 EMLA resulted in more cumulative root suckering per tree than did any other rootstock. Yield per tree in 2002 and cumulatively was greatest from trees on CG.4814, CG.7707, and G.30N and least from trees on M.26 EMLA and M.7 EMLA. The most yield efficient trees in 2002 and cumulatively were on CG.4814, and the least efficient trees were on M.26 EMLA and M.7 EMLA. Rootstock did not affect fruit weight in 2002; however, on average, CG.7707 resulted in the largest fruit, and CG.4814 resulted in the smallest. Limited data will be presented on CG.6210, G.30T, and Supporter 4, which are planted only at some locations. Data for the fifth season (2003) will be presented.
`Fuji' apple trees [Malus ×sylvestris (L.) Mill. Var domestica (Borkh.)] on nine dwarfing rootstocks (CG.4013, CG.5179, G.16N, G.16T, M.9 NAKBT337, M.26 EMLA, Supporter 1, Supporter 2, and Supporter 3) were planted at 10 locations (CA, KY MO NC OH 2 in PA SC UT and WA) under the direction of the NC-140 Multistate Research Project. After four growing seasons (through 2002), largest trees were on CG.4013. Smallest trees were on M.9 NAKBT337, Supporter 1, Supporter 2, and Supporter 3. Trees on CG.5179, G.16 N, G.16T, and M.26 EMLA were intermediate. Cumulative root suckering was greatest from trees on CG.4013 and similar from the other rootstocks. CG.4013, CG.5179, and G.16T resulted in the greatest yields per tree in 2002, and M.26 EMLA, M.9 NAKBT337, Supporter 2, and Supporter 1 resulted in the lowest. Cumulatively, CG.4013 resulted in the greatest yields per tree, and M.26 EMLA resulted in the lowest. Rootstock did not affect yield efficiency in 2002, but cumulatively, Supporter 1, Supporter 2, and Supporter 3 resulted in the most efficient trees, and M.26 EMLA the least. Fruit weight in 2002 or on average was not affected by rootstock. Limited data will be presented on CG.3041, CG.5202, and CG.5935, which are planted only at some locations. Data for the fifth season (2003) will be presented.