HEAD FORMATION IN APPLE TREES 



151 



As there were 120 trees of each variety, the proportion of misnamed trees was 

 not large except in the case of Rhode Island Greening. Smokehouse is some- 

 what like Rhode Island Greening in its habit of growth tliough less vigorous. 

 The misnamed trees are included in this report along with the others. 



Results of the Experiment 



Effect on Orowth. 



The wood removed in pruning each year has been weighed and the weights 

 are given in Table 1. Considerably more wood was removed from tlie Baldwin, 

 Northern Spy and Mcintosh than from the Rhode Island Greening and King 

 varieties. The reason for this is that the former varieties branch more freely 

 and there are more shoots to cut. Moreover, King wood is more porous than 

 the other varieties and therefore weighs less. 



Table 1. — Weight of Prunings — average per tree 



Variety and Type of 1917 



Pinining oz. 



Globular headed 1 



Globular not headed 1 



>Iodified leader 1 



Central leader headed 2 



Central leader not headed 2 



1918 191 

 OZ. oz. 

 Baldwin 



11 

 4 



12 

 10 



24 

 6 

 10 

 14 

 10 



1921 



OZ. 



89 

 53 

 46 

 106 

 60 



19;: 



OZ 



Northern Spy 



Globular headed 1 



Globular not headed 1 



Modified leader 1 



Central leader headed 1 



Central leader not headed 1 



14 84 



8 50 



11 48 



12 76 



11 



58 



84 

 33 

 51 

 76 

 49 



87 

 40 

 43 

 61 

 64 



Bhode Island Greening and Smokehouse 



Globular headed 

 Globular not headed 

 Modified leader 

 Central leader headed 

 Central leader not headed 



Globular headed 

 Globular not headed 

 Modified leader 

 Central leader headed 

 Central leader not headed 



Globular headed 

 Globular not headed 

 Modified leader 

 Central leader headed 

 Central leader not headed 



9 52 



4 34 

 6 39 

 9 46 



5 30 



Mcintosh 



6 12 



3 5 



4 10 



7 11 



5 5 



75 

 38 

 41 

 60 

 34 



18 

 10 

 21 

 32 

 16 



25 



27 

 48 

 24 



Tompkins King 



19 



11 



1923 

 OZ. 



63 

 35 

 42 

 53 

 35 



36 

 14 

 23 

 39 

 23 



74 

 19 

 19 

 53 

 16 



8 42 49 36 



3 26 10 9 



5 18 9 11 



6 36 21 30 



10 



1924 

 OZ. 



11 

 51 

 34 

 63 

 32 



61 



173 



39 



Total 



OZ. 



340 

 183 

 192 

 326 

 199 



82 73 348 



51 36 189 



48 38 194 



55 52 264 



39 47 229 



171 



36 102 



38 135 



63 199 



45 127 



406 



77 168 



83 185 



122 302 



57 142 



76 217 



29 80 



35 81 



39 137 



88 



Mucii more wood was cut from the headed trees than from those not headed. 

 Considering all varieties, the weight of wood cut from the globular headed 

 trees was a little over twice the weight of that cut from the globular trees not 

 headed. 



In tlie spring of 1922 when the trees had made six seasons' growth, one-half 

 of the trees were removed. They were dug by hand, the roots cut on a circle 

 four feet in diameter, the soil was washed from the roots and the trees 



