180 HATCH EXPEKIMENT STATION. [Jan. 



4. Compilation of Analyses of Fruits, Garden Crops 

 AND Insecticides. 



COMPILED BT H. D. HASKINS. 



1 . — Analyses of fruits. 



2. — Analyses of garden crops. 



3. — Relative proportions of phosphoric acid, potassium oxide 

 and nitrogen in fruits and garden crops. 



4. — Analyses of insecticides. 



A computation of the results of a chemical analysis of twenty 

 prominent garden crops shows the following average relative pro- 

 portion of the three essential ingredients of plant food : — , 



Parts. 



Nitrogen, . . .2.2 



Potassium oxide, 2.0 



Phosphoric acid, 1.0 



One thousand pounds of green garden vegetables contain, on 

 the above-stated basis of relative proportion of essential con- 

 stituents of plant food : — 



Pounds. 



Nitrogen 4.1 



Potassium oxide, 3.9 



Phosphoric acid, 1.9 



The weight and particular stage of growth of the vegetables 

 when harvested control, under otherwise corresponding conditions, 

 the actual consumption of each of these articles of plant food. 

 Our information regai'ding 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 limit pays, as a rule, better 

 than a scanty one. — (C. A. Goessmanx.) 



