Lack of Potash shows itself by the slow growth of the plants and by their main- 

 taining for an astonishingly long time, the dark-green colouring of the leaves. The 

 leaves die down without turning yellow with a dark brown colour. When Potash 

 is almost entirely absent, the leaves show on the still green or delicately yellow 

 coloured leaves, brown stripes or spots before their actual decay. 

 The average of two control experiments, which were in correspondence, given in 

 grams of dried hay gave the following results: 



Table 3 Completely Manured 

 Table 4 Without Potash 



T o b d c c o. 



(Tables 5 to 7.) 



Variety: Geudertheimer. 



Pot Experiments 1912. 



Soil — Sand with 6 " (, purified mould. 



Planted out on lune 7"^. 



The "Trash" (Sandgut) was harvested on the 27"' of August. 

 The "Leaf" (Bestgut) was harvested on the 12*'^ of September. 

 The results were photographed on 5"' August. 



10 



