292 



BULLETIN 262. 



Yields on different soil types. Table III shows that the Dunkirk 

 soils give larger yields than the other types. It shows also that Clyde 

 loam is considerably inferior to all others. It is probable that the Clyde 

 loam yields are too low, but a smaller number of orchards and acres 

 were used in this computation, so the averages are not so well substan- 

 tiated. After all, the orchards on the Clyde loam were not neglected 

 ones, so the figures are correct as far as they go. 



Selection of orchards. In order to increase the value of this study of 

 yields on different soil types, the orchards were selected with considerable 



FIG. 32. After " thinning," by cutting out every other row diagonally through the 



orchard 



care. All scale-infested orchards were excluded and only those orchards 

 were considered which had received, so far as could be told, nearly equal 

 and uniform care. No neglected orchards were included. This sifting 

 process reduces the acreage considerably, but seems to be the only fair 

 method of procedure. 



DRAINAGE 



A study of the accompanying table on drainage shows that a little 

 more than half (52.2 per cent) of the orchards have good drainage; about 

 one-fourth (26.3 per cent) have fair drainage; 10.5 per cent have poor, 

 and 1 1. 1 percent have locally bad drainage. Furthermore, it may be 

 seen that there are more orchards and more acres with locally bad 



