An increase of 3 cwts. 104 lbs. per acre is good testimony to the advantage of 

 potash manuring for wheat growing. 



2. Barley. 



Grain Straw 



Nitrogen — Phosphoric Acid Potash . 26 cwts. 16 lbs. 35 cwts. 24 lbs. 



Nitrogen -7- Phosphoric Acid 25 „ 31 „ 34 „ 13 „ 



Increase due to Potash cwts. 97 lbs. 1 cwts. 11 lbs. 



Barley therefore does not shew as great a demand for potash as wheat; but it 

 must here be noted, that barley on the potash plots has invariably proved of 

 better quality, than where grown without potash. 



3. Potatoes. 



Tubers Starch 



Per Cent Per Acre 



Nitrogen Phosphoric Acid ^Potash 176cwts. 231bs. 17.27",, 30 cwts. 49 lbs. 



Nitrogen Phosphoric Acid 126 „ 26 „ 17.66" „ 22 „ 39 „ 



Increase due to Potash 49cwts. 109lbs. 0.39",, 8cwts. lOlbs. 



The above figures exemplify well the extraordinary demand made by the potato 

 for available potash, an increase of 49 cwts. 109 lbs. tubers, with 8 cwts. 10 lbs. 

 starch per acre being directly attributable to potash manuring. 



— 50 



