Crops in Rot 
th of tobacco after corn on Field I in 1924. On center plot of three rows, potash is omitted 
n the fertilizer. On plot at left phosphorus is omitted from the fertilizer. Compare growth 
;hese plots with that on the corresponding plots of tobacco after potatoes (B). Plot at right 
obacco after potatoes, the plot receiving a fertilizer supplying nitrogen, phosphorus, and 
owth of tobacco after potatoes on Field I in 1924. On center plot of three rows potash i 
jmitted from the fertilizer. On plot at left phosphorus is omitted from the fertilizer. Growt 
)f the tobacco is much better than after corn under similar conditions (A). Plot at right i 
obacco after tobacco, the plot receiving nitrogen, phosphorus, and potassium in the fertilizer 
rhe growth of tobacco, both after potatoes and after tobacco, is much better than after corn 
rhe injurious effect of corn on the growth of tobacco is not always overcome by liberal fertilizin 
