SOIL MANAGEMENT FERTILIZATION OF ORCHARDS. 55 



3. In a sod orchard, low-grade suKate of potash gave better results 

 than muriate of potash, both plots receiving also ground bone. With 

 strip cultivation this difference seemed to disappear. In a cultivated 

 orchard, on lighter, better-drained soil, no significant differences appeared. 

 On the sod portion of this second orchard, furthermore, there were no 

 material differences. 



4. The residual effect of manure was greater than that of ashes or the 

 chemical fertilizers used. 



APPENDIX. 



Here are given the original data on which the discussion in this paper 

 is based. 



Table I. — Station Orchard: Tree Circumferences {Inches). 

 Rhode Island Greening, 



Roxbury Russet. 



1 Measurements of individual trees for these years not available. 



