1894.] 



PUBLIC DOCUMENT — No. 33. 



203 



1892. 



1893. 



A computation of the results of a chemical analysis of 

 twenty prominent garden crops shows the following average 

 relative proportion of the three above-stated essential ingredi- 

 ents of plant food : — 



Nitrogen, 2.2 



Potassium oxide, 2.0 



Pliosphoric acid, 1.0 



One thousand pounds of green garden vegetables contain, 

 on the above-stated basis of relative proportion of essential 

 constituents of plant food : — 



4 . 1 pounds of nitrogen. 



3.9 pounds of potassium oxide. 



1.9 pounds of pliosplioric acid. 



The weights and particular stage of growth of the vege- 

 tables when harvested control under otherwise corresponding 

 conditions the actual consumption of each of these articles 

 of plant food. Our information regarding these points is 

 still too fragmentary to enable a more detailed statement 

 here beyond relative proportions. It must suffice for the 

 present to call attention to the fact that a liberal manuring 

 within reasonable limits pays, as a rule, better than a scanty 

 one. 



