60 



MISSOURI AGR. EXP. STA. RESEARCH BULLETIN 49 



cause of lack of space. The check plots growing on the border of the 

 field were materially reduced in yield, in some cases, notably the oats 

 strain test of 1919 and the wheat variety test of 1921. In these cases 

 the variability of the actual and adjusted yields has been computed 

 both for all series and for the remaining series when the one affected 

 by an unreliable check is discarded. 



Relative Variability of Actual and Adjusted Yields. The relative 

 variability of actual and adjusted yields of both 3-row and 5-row plots 

 in the barley variety test is shown in Table 31. In this test there were 

 three replications, and the check variety was Oderbrucker, in every 



TABLE 32. RELATIVE VARIABILITY OF ACTUAL AND ADJUSTED YIELDS. 



Average Deviation in Percentage of Yield 



Oats Variety Test 1919. 



Average Deviation 



Planting 3 Series 4 Series 



number Variety (3 interior rows) (3 interior rows) 



Actual Adjusted Actual Adjusted 

 yields yields yields yields 



