Millet Smuts and Their Control 
15 
wheat, due to impaired growth at low temperature. The same condition 
may obtain in millet germination and infection. It is less likely to be a 
serious factor, however, since millet is generally seeded in a warmer 
part of the season. 
Howev r, it is known that the period of infection is limited to a 
brief stage in the early growth of the plant and that outside condi¬ 
tions, especially moisture and temperature, which obtain at this period 
may affect materially the amount of infection that takes place. 
r'lg. lu. iSniutied Kccl Hog' millet. 
MEANS OF SPORE DISSEMINATION 
There are many ways whereby the spores of smut may be dis¬ 
seminated. Very little dissemination is carried on by wind, because 
