A 10-YEAR TRIAL OF SEVEN APPLE CULTIVARS ON MALLING 26 ROOTSTOCK

Abstract

Cumulative yield per tree for seven apple (Malus pumila Mill.) cultivars on Mailing 26 (M.26) grown on sandy loam showed that Spartan, Idared, Mutsu, Red Delicious and McIntosh had similar cropping ability. Crops on Northern Spy and Tydeman’s Red were light. Tree height ranged from 2.8 to 3.7 m and tree spread from 3.1 to 4.1 m. The mean relative cropping efficiency to the 10th yr (total crop ÷ area of trunk cross-section) was of the order Spartan > Idared > McIntosh > Tydeman’s Red > Mutsu > Red Delicious > Northern Spy. Fruit on Mutsu and Northern Spy were larger than on the other cultivars.