142 



EXPERIMENTAL FARMS 



9-10 EDWARD VII., A. 1910 



Ordinarily, we might suppose the ' timothy sod ' to be the drier soil and, arguing from 

 previous results obtained in this laboratory, premise that its wheat would be the richer 

 in protein. Such, however, is not the case, and the explanation may lie in the fact 

 that the excessive rains during the early part of the season kept all the land prac- 

 tically saturated, thus off-setting the effect of the growing sod of the previous season, 

 which undoubtedly tended towards the drying out of the soil. 



Analyses of Flours. 



o 

 bo 



238 

 239 

 240 

 241 

 242 



Designation of Sample. 



Kharkov (irrigated), Lethbridge, 1908 



M (non- irrigated), Lethbridge, 1908 



Turkey Red, No. 380 (non-irrigated), Lethbridge, 1908.. 



II (timothy sod), Lacombe, 1908. . , 



II (after summer-fallow), Lacombe, 1908... 



c. 



61 

 56 

 55 

 63 

 58 



The first feature to be noted in a consideration of the above data is that the pro- 

 tein-content of the flours follows very closely that of the wheat from which they were 

 milled. "We do not call attention to this as a discovery or a fact for the first time 

 noted; in all our work in which both the grain and its flour have been examined we 

 have invariably found this to be the case — the richer the wheat the richer the flour. 

 It is, however, a point worth emphasizing, not merely as showing that variations in 

 nitrogen-content occur in the endosperm or portion of the grain made into flour and 

 not solely in the parts of the grain removed in milling, but as making clear that in the 

 nitrogen-content of the wheat we have a gauge of the protein-content of the flour. 

 The recognition of this is of particular value in breeding and selection investigations 

 in which the quantity of the wheat is insufficient to mill, a comparatively small amount 

 only being required for the nitrogen determination. 



It is noteworthy that the percentages of protein in these winter wheats are not 

 appreciably lower than many wc have obtained from Red Fife as grown in Manitoba 

 and Saskatchewan. There is little resemblance, so far as the amount of protein is 

 concerned, between the Kharkov and Turkey Eed and the ' fall ' wheats (e.g., Dawson's 

 Golden Chaff) more commonly grown in Ontario. 



Gliadin, Gliadin-ratio and Wet and Dry Gluten. 



