normdlly nourished plants, as, in cases of Potash deficiency, there is always a dispro- 

 portionately large amount of top in comparison with the other parts of the plant. 

 Moreover, this holds good for all plants. As soon as the Potash deficiency begins to 

 show itself, the leaves remain longer green than is the case with sufficient nutrition, 

 then yellow spots appear between the leaf veins and these turn quickly into brown or 

 greybrown, and the whole leaf withers a brown colour without an intermediate yellow. 

 In severe Potash starvation cases, as the photographs show, round longish light 

 brown or dark brown spots appear before the dying off of the leaves on the stalk, 

 as is shewn in the beets on 



Table 11, photographed on 7''' August; 



the beet is manured as beets 3 on Table 10 (Cf. also the beets on Table 14). With Potash 

 starvation the head of the beet plant is often very high. In the beet itself the evidences 

 of lack of Potash are, that the plant remains backward in growth and the sugar content 

 is low. The flesh often becomes yellow, more especially is this the case on the upper half. 



Yield per pot. Average of 4 control experiments: 



Sugar in fa o . fn ■ ■ -r Total dry sub- 



r , r, ^ Ury tSeet Dried lops . . t- 



tresh beet stance in I ops 



"/(> grams grains "',i 



13.40 10.19 46.53 82.02 



17.24 70.50 60.68 46.20 



20.82 118.57 69.60 37.00 



16 



