Whiter Meeting. 



291 



AMOUNTS OF NITROGEN, ETC., USED PER ACRE BY DIFFERENT 



PARTS OF TREE 



The total amount of the plant food removed by the fruit is, in- 

 deed, less than that removed by a crop of wheat, of hay, etc. ; nev- 

 ertheless, the orchard frequently does double duty, in part, at 

 least ; and it is safe to say that it is as sensitive to an available plant 

 food supply as any other crop. 



The above facts impress us with the importance of a "bal- 

 anced ration" for plants, orchard or other plants. Soils do not 

 ordinarily furnish plant food in "balanced" proportion. They may 

 be deficient in one or another element; the physical condition may 

 be poor, or an element may be in unavailable form; and, finally, 

 an excess of certain elements over others may re-act injuriously. 



