Recommended: amount of calcium carbonate (CaCO3) to achieve a pH of 6.3 - 6.5 based on soil texture and existing soil pH value:*
SOIL TEXTURE
Existing Soil pH Loamy Sand Sandy Loam Loam Silt
4.1 to 4.4 ......................... 115..................115...................240..................300
4.5 to 4.8 ...........................95..................125...................200..................350
4.9 to 5.2 ...........................70....................95...................160..................200
5.3 to 5.6 ...........................45....................65...................120..................150
5.7 to 6.0 ...........................25....................35.....................60..................100
* Source: N.J. Agricultural Experiment Station