However, when there is not enough plant food, and particularly so when Potash is de- 

 cidedly wanting, the harm done in a dry soil is larger, because where there is poverty 

 in moisture the food is less available, a fact whic^i may lead to the early dying of the 

 plant under conditions when Potash is deficient, but where Nitrogen and Phosphoric 

 Acid are wanting, this does not result, be the deficiencies of these ever so large. 

 It is well known that by manuring heavily with a complete dressing the harm 

 done by Nematodes may be entirely or almost illiminated. 



The alterations on the leaf caused by the presence of Nematodes are nothing 

 more or less than the intensified appearances of food starvation as has already 

 been described in the case of Potash deficiency. These appearances concur with 

 what has been said in Nr. 72, with Nematodes on Table 13, stronger than in 

 No. 67, without Nematodes on Table 12. 



in beet, the harm done by Nematodes exhibits itself not only by the retardation 

 of growth but also often by a strong lateral root formation and the absence of 

 the tap-root (leggy appearance.) 



Yield per Pot. Average of 4 control experiments. 



No. Fresh Beet r i d . I^ry Beet Dry tops 



tiesh Beet 



grams "/„ cii'rtiin ciiciim 



67 290 17.88 71.36 52.74 

 72 333 16.27 53.49 47.67 



18 — 



