G-196 



PRACTICAL UNIVERSALITY OF FIELD HETEROGENEITY 

 AS A FACTOR INFLUENCING PLOT YIELDS 



BY 



J. ARTHUR HARRIS 



Reprinted from JOURNAL OF AGRICULTURAL RESEARCH 



Vol. XIX, No. 7 : : : : Washington, D. C., July 1, 1920 



PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE. WITH 

 THE COOPERATION OF THE ASSOCIATION OF LAND-GRANT COLLEGES 



WASHINGTON : GOVERNMENT PRINTING OFFICE : 1920 



