BULLETIN 226. 



shows definitely that the Miami stony loam averages better than the Alton 

 stony loam and that the. soil with the bed-rock near the surface is by far 

 the poorest of all. 1 believe that the four-year average shows the rela- 

 tive merits of the soils quite accurately, except that the average for the 

 Ontario gravelly loam seems to be a little too high. It is certain, how- 

 ever, that this type usually gives a good yield. All previous discussions 

 of apple soils, so far as I have been able to determine, would consider 

 this a very poor apple soil. 



TABLE 31. 

 Average yield in bushels on different soil types. Trees set before 1880. 



TABLE 31 Concluded. 



Summary of the soil factor in apple-production. While the kind of 

 soil is important, in this locality, it is evidently not the most important 

 factor in apple-production and is not as important as the kind of treatment 

 that the soil receives. The kind of care required varies with the soil. The 

 Miami silt loam will doubtless produce a good crop with less manure 



