98 University of California Publications in Agricultural Sciences [Vol. 1 



Yuba City 



Number Per cent 



of typical Per cent 



trials kernels protein 



Early cutting 16 66.1 11.98 



Late cutting 16 64.6 12.05 



These average figures show, in the case of the Yuba City lot, 

 an apparent contradiction in that the early cutting with 66.1 

 per cent typical kernels showed 11.98 per cent protein, while the 

 late cutting wdth but 64.6 typical kernels showed 12.05 per cent 

 protein. When it is remembered, however, that the difference 

 in the two cuttings is represented by but a single kernel in one 

 hundred and that the average protein content is but seven- 

 hundredths of 1 per cent, it will be seen that the discrepancy is 

 only apparent, and well within the limits of error in either count 

 or analysis. 



As a whole, it is shown that out of the total of 31 cases 11 

 showed an increase of typical kernels in the late cut grain and 

 14 showed an increased protein content, with, the following rel- 

 ative averages: 



Number Per cent 



of typical Per cent 



trials kernels protein 



Early cuttings 31 79.89 12.66 



Late cuttings 31 76.9 12.60 



The results for 1906 do not show that there is any marked 

 difference to be attributed to allowing the grain to become thor- 

 oughly ripe on the straw, as is generally done in California. 



EXPERIMENTS OF 1907 



The experiments as to the effect of the time of cutting wheat 

 upon its protein content were continued in the manner described 

 above in the season of 1907 at Modesto, Yuba City, and Tulare, 

 with the following results: 



