How convert between umhos/cm and mmhos/cm
1000 umhos/cm = 1 mmhos/cm
To use the table below, convert your units to mmhos/cm by dividing your reported result by 1000.
Interpreting EC data from soil extracts (1:2 soil-to-water ratio).
|0-0.15||Very low||Plants may be starved of nutrients.|
|0.15-0.50||Low||If soil lacks organic matter.
Satisfactory if soil is high in organic matter
|0.51-1.25||Medium||Okay range for established plants.|
|1.26-1.75||High||Okay for most established plants.
Too high for seedlings or cuttings.
|1.76-2.00||Very high||Plants usually stunted or chlorotic.|
|> 2.00||Excessively high||Plants severely dwarfed; seedlings and rooted cuttings frequently killed.|