340 



Bulletin 163. 



old tannery had been thickly spread on the land, and in such 

 areas there was not the slightest indication of diseased beets, 



The tannery 

 ( product was 



quite dry ; and 

 I attributed the 

 absence of the 

 disease to t h e 

 lessened water 

 content of the 

 upper layers of 

 the soil, which 

 assumption 

 would be in ac- 

 cordance with 

 the results of 

 some experi- 

 ments to be 

 detailed later. 

 Again, in a part 

 of the field 

 where coal ashes 

 had been heavi- 

 ly applied, there 

 was a noticeable 

 diminution i n 

 the amount of 

 the disease. 

 This disease 

 was afterwards 

 reported from 

 several places in 

 the state, al- 

 though it has 

 not yet proved a 

 common disease 



49. — An early stage of the attack of Beet Root- Rot. 

 basal parts of the leaves are blackened. 



The 



in New York. As mentioned later, what is probably the same 

 disease was reported in Iowa in 1891, and it may have been 



