2L 



R. Freytag, of Roitz. Standing wheat (see Plate II.) : 



f 9.60 cwt. of wheat 

 Un manured ... ... ... -{ 01 a 



8 cwt. Thomas phosphate per acre 



2 cwt. kainit 



2 cwt. nitrate of soda ... " 



28.80 cwt. of wheat 

 92.80 cwt. of straw 



PLATE III. 



Jacob Keller's experiments at Ernpthofen (Hesse). Photo, from 

 L of an acre. No manure. (See Plate III.) 



f 1,216 Ibs. of wheat 

 Result per acre | ^ ^ Q ^^ 



Photo, from 



an acre - ( See Plate 



Complete manuring per acre 

 Result per acre 



121 Ibs. of muriate of potash 



80 Ibs. of superphosphate 

 160 Ibs. of nitrate of soda 



/ 1,952 Ibs. of wheat 

 \ 5,072 Ibs. of straw 



Profit, 3 7s. 6d. 



