Barn and Field Experiments in 1917. 11 



orchard in the fertilizer experiment there are at least 3 distinct 

 types of trees. 



Type 1 is a tree having a stocky appearance with the head 

 made up of large limbs bearing many fruit spurs. Type 3 is 

 a tree having no large main branches but with the head made 

 up of many long slender limbs with the bearing wood mostly 

 at their ends. Type 2 is a tree having a head that is intermediate 

 between type 1 and type 3. 



In plot 6 A. during a 4 year period there were 2 trees that 

 were consistently heavy yielders and both were o-f type 1. In 

 the same plot were 8 trees that were consistently low yielders 

 of these 7 were of type 3 and 1 of type 2. In plot 6 B. for the 

 same period there were 4 consistently high yielding trees 1 of 

 which was of type 1 and 3 of type 2. In the same plot were 6 

 low yielding trees all of type 3. In plot 6 C. for the same period 

 there were 9 high yielding trees all of type 1 and 5 low yield- 

 ing trees all of type 3. 



For these or similar reasons the following trees are not 

 considered in the discussion of results here reported. 



Row 1 trees 1, 2, 6, 7, 14, 18, 29, 33. 



2 " 3, 7, 22, 23, 36. 



3 " 1, 5, 7, 22. 



4 " 5, 6, 8, 12, 19, 24, 31, 33. 

 Row 5 trees 3, 4, 9, 27, 28, 29, 33. 



6 " 1, 2, 4, 12, 17, 23, 35. 



7 " 1, 9, 10, 11, 25, 32, 33, 36. 



8 " 1, 2, 9, 23. 



Row 9 trees 1, 2, 3, 5, 8, 10, 22, 24. 



" 10 " 3, 14, 20, 21, 24, 29, 30, 31, 33, 34. 



" 11 " 1, 17, 30, 33. 



" 12 " 4, 5, 31, 32, 33, 34. 



CULTIVATED PLOTS AND PLOTS IN GRASS. 



On all of the plots up to the summer of 191 6 rye was 

 sown in the late summer as a cover crop. This was plowed 

 under early in the spring and the land was kept cultivated 

 until August when the new cover crop was again sown. On 

 the west half (cultivated plots) this practice is continued. On 

 the east half (plots in sod) the grass is cut and applied as a 

 mulch. The plant food stored up in the wood growth and that 

 which is removed in the apple crop is taken from the soil, but 



