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order that produces the disease known as "club foot," which 

 externally often resembles the deformities produced by the 

 nematodes. In several leguminous plants root galls are 

 produced by an internal parasite, but in this case instead of 

 forming a disease, the parasite is rather beneficial than 

 otherwise as it serves to assist the host in collecting nitrogen. 

 In still other cases the causes of root galls are entirely un- 

 known. 



Sufficient has been said to indicate that too careful a study 

 of the couditions and causes of plant diseases can not be 

 made, and that we should be careful in too much hasty gen- 

 eralization. In order to furnish the farmers of Alabama 

 some information of the most common fungous diseases that 

 are likely to be met with in the State, and to furnish simple 

 directions for treating them as approved by practice here 

 and elsewhere, we give, after a few formulas for preparing 

 fungicides, a classified list of fungous diseases, giving symp- 

 toms where not well known and method and time of treat- 

 ment. 



FORMULAS i'OE FUNGICIDES. 



As a rule fungicides are applied as a preventive rather 

 than a cure. Since it has been found that the spores of 

 fungi will not germinaie in the presence of salts of copper, 

 various preparations have been applied which involve the 

 salts of that metal in solution. The following will be found 

 the most efficient for general use, but modifications will be 

 noted for special cases later: 



Sulphate of Coppkr. 



Formed by dissolving two pounds of copper sulphate 

 (bluestone) in fifty gallons of water. In dissolving the blue- 

 stone it should be placed in a small piece of gunny sack and 

 suspended near the top of the barrel as it will dissolve too 

 slowly otherwise. This can only be used on vines or trees- 

 before the buds have commenced to swell. 



