# lim\_var

The condition variables, for which a limit variable must be specified, are listed in the table below. Some limit variables must be used in combination with a limit operator (see [lim\_op](https://swatplus.gitbook.io/io-docs/introduction-1/decision-tables/lum.dtl/lim_op)). 

<table><thead><tr><th width="191">Condition variable</th><th>Limit variable</th><th>Description</th><th>Limit operator?</th></tr></thead><tbody><tr><td>soil_water</td><td>wp</td><td>Wilting point</td><td>yes</td></tr><tr><td>soil_water</td><td>fc</td><td>Field capacity</td><td>yes</td></tr><tr><td>soil_water</td><td>ul</td><td>Upper limit</td><td>yes</td></tr><tr><td>plant_gro</td><td>y</td><td>Plant growing</td><td>no</td></tr><tr><td>plant_name_gro</td><td></td><td></td><td>no</td></tr><tr><td>hyd_soil_group</td><td></td><td></td><td>no</td></tr><tr><td>land_use</td><td></td><td></td><td>no</td></tr><tr><td>tillage</td><td></td><td></td><td>no</td></tr><tr><td>plant</td><td></td><td></td><td>no</td></tr><tr><td>ch_use</td><td></td><td></td><td>no</td></tr><tr><td>vol</td><td>evol</td><td>Emergency volume</td><td>yes</td></tr><tr><td>vol</td><td>pvol</td><td>Principal volume</td><td>yes</td></tr><tr><td>vol</td><td>e-pv</td><td>Emergency minus principal volume</td><td>no</td></tr><tr><td>wet_depth</td><td></td><td></td><td>no</td></tr><tr><td>vol_wet</td><td>evol</td><td>Emergency volume</td><td>yes</td></tr><tr><td>vol_wet</td><td>pvol</td><td>Principal volume</td><td>yes</td></tr></tbody></table>