SOME RELATIONS OF ORGANIC MATTER IN SOILS IL 
Total yields of crops on plats in Series I 
The total yields of crops in Series I are represented in 
figure 1. 
QON WITHOUT LIME 
| WITH LIME 
Field 
weight 
(ibs.) 
600 ET 
ye 
500 zy 
400 Y a 
300 Y : 
200 Y 4 
100 Y 
YE 
0 VU; 
Flat 7002 7008 7005 7011 7006 7012 7014. 7015 
Crop rotation Crop rotation Grass Crop rotation 
without with without 
legume legume legume, 
+K,SO, 
Fic. I. TOTAL PLAT YIELDS FOR TEN-YEARS PERIODS, SERIES I 
In every case there was an increase in crop yield on the 
limed plats over that on the unlimed plats. It seems logical to 
