Dec, 1909.] 



POTASH IN CLAY LOAM SOILS. 



45 



T.\BLE VIII. — Unfertilized Plots Arranged in Order of Yield. 



Plot. 



I 

 Yield. ,Pep cent. Potash. Potash Absorbed. 



14 2,316 lbs 



8 2,344 



11 2,814 



17 ] 3,088 



20 3,124 



5 3,268 



2 3,616 



47 : 5,174 



38 j 5,320 



32 ' 5.412 



26 [ 5,674 



41 5,848 



35 5,866 



23 j 6,010 



44 ! 6,228 



29 1 6,374 



1.33 

 1.67 

 1.87 

 1.54 

 1.11 

 1.85 

 1.61 

 1.86 

 1.65 

 1.73 

 1.28 

 1.79 

 1.48 

 1.62 

 2.06 

 1.81 



30.80 lbs. 



39.14 



52.62 



47.. "55 



34.67 



60.45 



.58.21 



96.23 



87.78 



93.62 



72.62 

 104.67 



86.81 



97.36 

 128. 29 

 115.36 



A diagram, Fig. 1, plotted from the data in table VIII shows 

 the relation even more closely. Practically by doubling the yield 

 the amount of potash is doubled. 



Fig. 1. 



O 



o 



o 



o 

 o 

 o 

 o 



o 



o 



o 

 o 

 o 



Si 



o 

 o 



o 

 o 



o 



o 

 o 



o 

 o 

 o 

 o 



o 

 o 



