PLATE s 
Influence of soil temperature and moisture on the development of seedling-blight 
of Marquis wheat. 1 
A. —Seed sown in soil wet to 30 per cent of its moisture-holding capacity. Note 
percentage of blight which developed at 8° C. 
B. —Seed sown in soil wet to 45 per cent of its moisture-holding capacity. Note 
decrease erf blight which developed at 8° C. 
C. —Seed sown in soil wet to 60 per cent of its moisture-holding capacity. No 
blight developed at 8° C., and less at all temperatures than in the drier soils. 
1 The 10 seedling s in each group represent the proportion of healthy and blighted seedlings from a 
series of 200 plants grown at each soil temperature from seed inoculated with Gibberella sawbmetn. 
