Leaching model (soil) Leaching model (soil) A leaching model is a hydrological model by which the leaching with irrigation water of dissolved substances, notably salt, in the soil is described depending on the hydrological regime and the soil's properties. <br> The model may describe the process (1) in time and (2) as a function of amount of water applied. <br> Leaching is often done to "reclaim" saline soil or to "conserve" a favorable salt content of the soil of irrigated land as all irrigation water contains salts. The leaching process in a salty soil to be reclaimed is illustrated in the leaching curves
Removal of cannabis from Schedule I of the Controlled Substances Act and laboratories with professional expertise." - Patrick Rohde In 1992, DEA Administrator Robert Bonner promulgated five criteria, based somewhat on the Controlled Substances Act's legislative history, for determining whether a drug has an accepted medical use. The DEA claims that cannabis has no accepted medical use because it does not meet all of these criteria: These criteria are not binding; they were created by DEA and may be altered at any time. Judicial deference to agency decisions is what has kept them in effect, despite the difference between these and the statutory criteria. Cannabis is one of several plants with