Journal of Agricultiiral Research vol. xix, NO. 7 



For a second test of the influence of field heterogeneity on the yield 

 of ear corn we turn to the Huntley data. 



FIG. 9. Diagram showing yield of ear corn, 1916, on the Huntley experimental tract. The yield is 

 expressed in pounds per quarter plot. 



In 1915 and 1916 corn was grown on the Huntley experimental plots, 

 described above, and was harvested in quarter plots. The yields for 

 the two series are shown in figure 8 for 191 5 and in figure 9 for 1916. These 

 records are of special interest in view of the fact that these are irrigated 



