EXPERIMENTS IN FIELD PLOT TECHNIC 



65 



TABLE. 36 RELATIVE VARIABILITY OF ACTUAL AND ADJUSTED YIELDS. 

 Average Deviation in Percentage of Yield. Wheat Mixture Test 1921 



Average Deviation 



Planting Actual yields Adjusted yields 



number Variety (3 interior (3 interior 



rows) rows) 



32 of other varieties. The yields were adjusted by means of each 

 check variety separately, to determine the relation between the ef- 

 fectiveness of yield adjustment and the similarity of the check to the 

 tested variety. The results of this adjustment on plot variability are 

 shown in Tables 37 and 38. 



The variability of the yields of the Red Rustproof strains was 

 somewhat reduced (6 per cent) by adjustment according to the yields 



