BULLETIN 1310, TJ. S. DEPARTMENT OF AGRICULTURE 
Fig. 1. — Annual and average yields of spring wheat on fallow, disked corn ground, and with continuous 
wheat for the years 1917 to 1923, inclusive 
Fig. 2.— Annual and average yields of oats on fallow, disked corn ground, and with continuous oats for 
the years 1917 to 1923, inclusive 
Fig. 3.— Annual and average yields of barley on fallow, disked corn ground, and with continuous barley 
for the years 1917 to 1923, inclusive 
