AGRICULTURAL EXPERIMENTAL FIELD, GOTTINGEN (Barley). 



Plot 7 



Manured with Potash 

 and Phosphoric Acid 



-> 



*s. 



■■*.J 



k'^-» 



^''^^^VT-^Sfe 



i«^ : 



Plot 8 



Manured with Nitrogen 

 and Phosphoric Acid 



Gfittingen Table 5 



