Soil loss tolerance for a specific soil, also known as the T value, which can be calculated with 
The idea of soil loss tolerance was initially devised by the SCS (known presently as the NRCS). It was based on the minimum soil loss rate required to reduce organic content and harm crop productivity. In its early stages of development, soil loss tolerance rates were inconsistent because they were obtained based on rough estimates. From 1961 to 1962, several groups of soil in the United States were designated with T rates ranging from 2 to 6 tons per acre per year. The rate was subsequently adjusted to 1 to 5 tons per acre per year.[5] The value was adapted for use in conservation management beginning in the mid-1960s.[6]
 | This soil science–related article is a stub. You can help Wikipedia by expanding it. |
