CHEMICAL CORN-GROWING. 



81 



We would call attention to the interesting fact, that more 

 potash was absorbed in the earlier periods of growth, than 

 phosphoric acid ; as potash is a large constituent of the foliage, 

 this is as we should expect. Note the following table : — 



Ratio of Phosphoric Acid to Potash. 



Period 1, 1 to 5 



"2, 1 " 3 



"3, : . 1 " 2i 



"4, 1 " 3 



" .5, 1 " 2 



Ratio for whole period of observation as 1 " 3 



Let us follow up this hint, by observing the proportions of 

 our chemicals that are removed by differently foddered crops. 



Bemoved per Bushel of Grain, in Various Fodder Ratios. 



(1.) 1 pound grain to 2.54 lbs. fodder. — 1.58 lbs. nitrogen, 84 lbs. phos. 

 acid, 2.56 lbs. potasli. Relation of phos. acid to potash, 1 to 3. 



(2.) 1 pound grain to 1.4 lbs. fodder.— 1.27 lbs. nitrogen, .63 lb. phos. 

 acid, 1.54 lbs. potash. Relation of phos. acid to potash, 1 to 2.4. 



(3.) 1 pound grain to 7 lbs. fodder. — 1.08 lbs. nitrogen, .48 lb. phos. 

 acid, .88 lb. potash. Relation of phos. acid to potash, 1 to 1.8. 



It will be observed that (1) in the table, represents the 

 results (approximately) as derived from the experiment of 

 Stohmann ; (2) represents what we have given here as the 

 average result ; while (3) represents the reliable minimum 

 result as given above. We would also call attention to the 

 fact that while the increased foddering of the crop increased 

 the nitrogen but from 1.08 to 1.58 pounds, and the phosphoric 

 acid from .48 to .84 pound, or less than double (accurately, 



