866 



Journal of Agricultural Research 



Vol. XX, No. ii 



TablE IV. — Electrometric measurements in equivalents of CaC0 3 per acre in o to y inches 

 of the surface soil in comparison with amount of CaC0 3 required by the Hopkins method — 

 Continued 



SOILS WHOSE REACTION WAS BETWEEN Ph 7 AND PH 8.3 



Soil 

 No. 



County. 



Soil type. 



Initial 

 Ph. 



Pounds per acre of CaCOi 

 equivalent to titration of — 



Ph7- 



Ph 3 - 



Pounds 

 per acre 

 of CaCOs 

 required 



by the 

 Hopkins 

 method. 



10S5 

 I°J9 

 1219 

 1120 

 1047 

 1132 

 1268 

 1267 

 1072 

 1160 

 "57 

 1070 

 "31 

 1121 

 1162 



Riley 



Russell 



Greenwood.. 



Finney 



Brown 



Sho.wnee. . . . 

 Montgomery 



do 



Harper 



Reno 



do 



.. ..do 



Shawnee. . . . 

 Finney .... 

 Reno 



Laurel silt loam 



Summit silty clay loam 



Osage loam 



Sandy loam 



Silty loam bottom 



Osage silty clay loam 



Osage clay (alfalfa land) 



Osage silty clay loam 



Brown loam 



Arkansas fine sand 



Arkansas clay loam 



Pratt loam 



Osage very fine sandy loam. . 



Finney clay 



Pratt fine sandy loam 



8.16 

 8.03 



7.81 



600 



1, 200 



800 



200 



1,080 



1,160 



1, 200 

 1.400 



560 



1,520 



2, 120 



800 



680 



2. 760 



3' 160 

 5,280 

 4.040 



2, 720 

 400 

 3i48o 

 3-36o 

 7,640 

 3,320 

 I,4O0 



4, 160 

 5,200 

 1.840 

 2.040 

 6,440 



340 

 340 



SOILS WHOSE ALKALINITY WAS BELOW Pn 



1287 

 1 143 

 II9I 

 IIOO 



1243 

 1230 



1058 

 1 148 



1266 



1271 

 1284 

 1141 

 "35 

 1232 



1136 

 1224 

 1256 

 1279 

 1265 



1277 

 1280 

 1273 

 1257 

 1293 



1275 

 1233 

 1244 

 1239 



Montgomery 

 Shawnee .... 



Jewell 



....do 



Cherokee 



....do 



Doniphan . . 



Reno 



Montgomery 



....do 



....do 



Shawnee .... 



....do 



Cherokee 



Shawnee .... 

 Greenwood.. 



....do 



Montgomery 

 ....do 



....do 



....do 



do 



Greenwood . 

 Montgomery 



do 



Cherokee. . . . 



do 



do 



Summit silty clay loam .... 



Boone fine sandy loam 



Colby silt loam 



Jewell silt loam 



Cherokee silt loam 



Neosho silt loam 



Brown silt loam 



Dune sand 



Bates very fine sandy loam 



Bates loam 



Crawford loam 



Summit silty clay loam .... 

 Crawford silty clay loam . . 

 Bates silt loam 



Oswego silt loam 



Summit stony loam 



Boone fine sandy loam 



Bates very fine sand 



Cherokee silt loam 



Bates shale loam 



Bates loam 



Bates very fine sandy loam 

 Summit silty clay loam. . . . 

 Bates stony loam 



Oswego silt loam 



Oswego silty clay loam. . . . 



Bates fine sandy loam 



Summit silt loam 



580 



340 

 340 



Alkali. 

 440 



680 

 2,380 



1, 700 



,380 

 270 



,020 

 40& 



SUMMARY 



(1) A number of soils from different parts of Kansas were analyzed 

 for total calcium, calcium in forms soluble in Nl$ hydrochloric acid, 

 and in N/i hydrochloric acid. The amount of carbon dioxid in these 

 soils was also determined. 



(2) Ten-gm. samples of these soils were placed in 100 cc neutral 

 distilled water, and the initial reaction was determined by means of the 



