Final Report on the 1984 NC-140 

 Cooperative Apple Rootstock Planting 

 in Massachusetts: Starkspur Supreme 

 Delicious on Fifteen Rootstocks 



Wesley R. Autio 



Department of Plant & Soil Sciences, University of Massachusetts 



Dwarfing rootstocks clearly are part of the exceeded by returns, apple growers must take 

 future of the apple industry in New England. At advantage of all opportunities to reduce costs or 

 a time when production costs often are not increase returns. Dwarfing rootstocks may al- 



Height and spread (ft) 

 4 6 8 10 12 



14 



P.I 8 



A. 313 



Seedling 



W\W.VWVVVV\VVVVVVWVWVW\.'wV\.V\S.VWVVW\W v~^~^ 



MAC.1 ^^^^^^^^^^^^^^^^^^^^^ 



B.490 



M.4 



M.7 EMLA 



P.I 



M.26 EMLA 



C.6 



MAC.39 



.vwvvvvvvvvvvvvvvvvvvvvvvvvwvwvvvwvv 



5S 



BiBSfiBi 



^^ 



^^k^ki^MMMri^y^il^^uMffi^^^ 



WWWN 



\.\.vvs^ 



SfififiB 



i 



— ^^^^^^^^^^^^^ 



vvvvvvvv 



SS55S&5fiS^5SiS^fiSS5B^^^^^^^^ 



^SiSS&ifiK^ 



1 



.\VX\^KVVVV^^V\^VVKVV^^^ 



.v.\.\v.\.\.\.\.v\.^^ 



1 



-\- .^A^^^^^^^^^^^^^^^^^^i 



xxxxxxxx" 



^^^^^^^^^o 



^^^ 



^^^^^^^^^^ 



vvvvwwv 



^ 



X\\\\\\\\\\\\\\\\\\\N 



de 



S^^^^^^^ 





P.2 

 P.I 6 



^^^^^^ 



^V\VVV.VV.VV.\V.VV\VN 



Dtca 



^Height 

 H Spread 



P.22tHi^^^^^ 



5 10 15 20 



Trunk cross-sectional area (in^) 



16 



25 



Figure 1. Trunk cross-sectional area, height, and spread of Starkspur Supreme Delicious trees on 

 various rootstocks after 10 growing seasons. Trunk cross-sectional area means are significantly 

 different at odds of 19:1 if bars do not contain the same letter. 



Fruit Notes, Summer, 1994 



11 



