FOOT-ROT DISEASES OF WHEAT IN AMERICA a4 
Seed treatments and the selection of clean seed will tend to prevent 
the spread and increase of the parasites. 
Rotations, including a liberal use of oats, legumes, sorghums, and 
in some cases corn, will at least assist the farmer in obtaining a crop 
from infested soil. 
Summer fallowing infested land in combination with certain rota- 
tions has given good results in combating take-all in Australia. 
Although this method has not been given a thorough trial in 
America, it is reasonable to believe that it should give as good results 
here in districts where summer fallowing is practiced. The effect of 
this practice on the control of other foot-rots is not definitely known, 
but in the case of the Helminthosporium foot-rot preliminary experi- 
ments indicate that summer fallowing has but little, if any, effect 
on the disease. 
It is considered good practice to prevent undue accumulation of 
infested straw in wheat fields and to prevent the promiscuous growth 
of wild grasses which are parasitized by the foot-rot organisms. 
Infested straw should not be spread on the soil. When used as 
bedding for farm animals the resulting manure should be com- 
posted before being applied to the soil. 
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(3)> BOLEEY--H. Ea: 
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