EXPERIMENTS IN FIELD PLOT TECHNIC 



67 



TABLE; 38. RELATIVE VARIABILITY OF ACTUAL AND ADJUSTED YIELDS. 

 Average Deviation in Percentage of Yield. Oats Strain Test 1921. 

 (Red Rustproof and Kherson) 



* Not taxonomically Red Rustproof. Excluded from average. 

 f * Not taxonomically Kherson. Excluded from average. 

 ***Mixture of strains 082, 094, 0100, 0174. 



check increasing their variability 7 per cent, and the Red Rustproof 

 check 20 per cent. These results indicate the importance of using 

 a check variety typical of the varieties tested, when adjustment of 

 yields is to be made ; and the danger of increasing rather than decreas- 



