Table 3. Cumulative yield efficiency (1992-96) at the end of the 1996 growing season.

Rootstock
Cumulative yield efficiency (kg/cm2 trunk cross-sectional area, 1992-96)
Golden Delicious

Jonagold

Empire

Rome

Average

M.9 EMLA

1.61 b

1.37 bc

1.61 b

1.74 b

1.59 c

B.9

1.97 a

1.91 a

1.91 a

2.37 a

2.05 a

Mark

2.09 a

1.80 a

1.88 a

1.95 b

1.93 b

O.3

1.71 b

1.48 b

1.72 ab

1.83 b

1.69 c

M.26 EMLA

1.35 c

1.19 c

1.16 c

1.51 c

1.30 d

Average

1.75 b

1.55 c

1.65 bc

1.89 a


Site
Cumulative yield efficiency (kg/cm2, 1992-96)

Arkansas

0.51 h

Colorado

1.01 fg

Iowa

0.90 gh

Indiana

1.13 ef

Kansas-Manhattan

2.34 c

Kansas-Wichita

1.78 d

Kentucky

1.85 d

Massachusetts

2.94 b

Maine

1.96 d

Ohio

3.48 a

Pennsylvania

1.32 e

Tennessee

1.04 fg

Utah

1.32 e

Virginia

2.37 c

Rootstock means within columns, average rootstock means, average cultivar means, or average site means are significantly different at odds of 19:1 if not followed by the same letter.