July I, 1920 



Universality of Field Heterogeneity 



287 



into thirds, and of 0,0425 acre when the division has been into quarters 



of plots. 



In the spring of 191 2 the whole field was uniformly seeded to alfalfa; 

 only one crop was harvested, and yields were recorded for the entire 



Fig. 3 .-Diagram showing yield of alfalfa in second cutting. 1913. on the Huntley experimental tract 

 The yield is expressed in pounds per quarter plot. 



plots only. In 191 3 and 1914 three cuttings were made. The first 

 cutting was harvested in half plots. The second cutting of 191 3 and the 

 first and second cuttings of 1914 were harvested in quarter plots. The 



