Soil reaction is related to the prachubuak element that is spotted land absorbs anchored very seriously. The prachubuak element is the land and suck the spotted anchored: calcium (Ca 2 +), magnesium (Mg + 2), sodium (Na +) and potassium (K +)
Soil reaction is associated with an alkaline land Cationic retention as well. Cationic alkaline extraction major land confiscated including calcium (Ca + 2), magnesium (Mg + 2), sodium (Na +) and potassium (K +).
Soil reaction associated with the element of cationic alkaline land deeply held very much. Element positive ions, alkaline land deeply held important, including calcium (Ca 2), magnesium (Mg 2) sodium (Na) and potassium (K).