656 



STATE BOARD OF AGRICULTURE. 



TABLE 22. — KKEEZING I'OIXT I)EPRESSK).\S OF DIFFERENT SECTIONS OF VAUIOUS 

 SOILS UNDER DIFFERENT CONDITIONS. SAMPLES TAKEN JUNE 13, 1918. 



Description of soiL 



Miami sand: 



Virgin soil with grass removed .... 



Virgin soil (sod) 



Growing timothy and clover 



Growing barley (fully headed) .... 



Growtag oats, jointing stage 



Cultivated soil with crops removed . 

 Miami sandy loam: 



Virgin soil with grass removed .... 



Virgin soil (sod) 



Growing rye (fidly headed) 



Cultivated with crop removed 



Miami silt loam: 



Virgin soil with grass removed .... 



Virgin soil (sod) 



Growing alsike (in full bloom) 



Cultivated with crop removed 



Miami very fine sandy loam: 



Virgin soil with grass removed .... 



Virgin soil (sod) 



Growing oats (jointing stage) 



Gro-wing alsike and timothy 



Cultivated with crop removed 



Clyde sandy loam: 



Virgin soil with grass removed .... 



Virgin soil (sod) 



Cultivated with crop removed 



Clyde silt loam: 



Virgin soil with grass removed .... 



Virgin soil (sod) 



Growing oats, 15 inches liigh 



Growing clover (in full bloom) .... 



Cultivated with crop removed 



Miami silt loam: 



Virgin soil with grass removed .... 



Virgin soil (sod) 



Growing alsike, full bloom 



Cultivated with crop removed 



Section of soil sampled. 



Min. 



s £ 



S-i 



.023 



.005 

 .002 

 .043 



.028 



.015 

 .255 



.018 



Oil 

 .041 



.012 



.004 

 .010 

 .101 



.023 



.023 

 .030 



.024 

 .020 

 .015 



.015 



.007 

 .014 



a.2 

 ft 



575 



125 



50 



1 .075 



700 



375 

 6,375 



450 



275 

 1 ,025 



300 



100 



250 



2,525 



575 



575 

 750 



600 

 500 

 375 



375 



175 

 350 



H to 6 in. 



11 



sew 



o o 



.004 

 .006 

 .002 

 .002 

 .002 

 .001 



.005 

 .002 

 .008 

 .005 



.006 

 .003 

 .006 

 .008 



.005 

 .012 

 .007 

 .008 

 .015 



.009 

 .011 



.008 

 .010 

 .008 

 .002 

 .001 



.010 

 .006 

 .004 

 .006 



So 



ft 



100 

 150 

 50 

 50 

 50 

 25 



125 



50 



200 



125 



150 



75 



150 



200 



125 

 300 

 175 

 200 

 375 



225 

 275 



200 



250 



200 



50 



25 



250 

 150 

 100 

 150 



6 to 12 in. 



m 

 tow 



.s£ 



(EX) 



.001 

 .002 

 .002 

 .004 

 .000 

 .000 



.004 

 .000 

 .002 

 .003 



.007 

 .005 

 .004 

 .014 



.007 

 .008 

 .002 

 .006 

 .010 



Oil 

 .010 



.013 

 .005 

 .015 

 .013 

 .005 



.010 

 .012 

 .010 

 .002 



.2^ 



(« 

 ft 



25 



50 



50 



100 



100 



50 



75 



175 

 125 

 100 

 350 



175 

 200 

 50 

 150 

 250 



275 

 250 



325 

 125 

 375 

 325 

 125 



250 



300 



250 



50 



The salt conteut of the quarter-iiicli section varied markedly. Where 

 tliere was no vegetation a considerable concentration of salts -•/as fonnd 

 in this layer, while where vegetation was permitted to grow with few 

 exceptions no such accnmnlation occurred. Apparently some of the 

 soluble material in the lower section of the uncropped areas moved ii]>- 

 ward and was concentrated at the surface as was expected from i-esiilts 

 of experiments reported earlier in this bulletin. It is possible, however, 

 that this accumulation was due in part to the rapid formation of soluble 

 material in this layer and not wholly to its concentration from other 

 sections of soil. The lack of accumulation on the surface of the cropped 

 areas may be explained by the utiliza'tion of the soil moisture to such 

 an extent that there was little capillary movement to the surface, which 

 according to data presented previously would greatly reduce the move- 

 ment of salts. Furthermore, the removal of some of the soluble material 

 by the growing plants is to be considered. 



