Given that the pH falls below 5.5, aluminum gets to be soluble at stages harmful to vegetation. Also, soluble aluminum reacts with h2o to produce hydrogen ions, additional lowering soil pH. The purpose of liming is to reduce exchangeable aluminum to levels that are not harmful to plants. At https://soiltestingandanalysisbd65543.mpeblog.com/52959166/not-known-factual-statements-about-soil-test-reports-bangladesh