Incorrect nutrient application is often responsible for overs alting or salinity in the greenhouse. We explain what to do now.
In the greenhouse, different factors are responsible for overs alting or salinity. On the one hand, there are high amounts of fertilizer that are used by the owner for optimal growth of the plants. On the other hand, it is the water flow that pulls up from the greenhouse floor. In the field, the s alts are simply washed out by rain, but this natural method does not work in the greenhouse.
S alts starting to bloom
You can tell if the soil is overs alted when a yellowish-white layer forms on the topsoil, sometimes becoming so intense that it gives the visual impression that the soil has been whitewashed.
Definition of salinity
Increased deposition of s alts on the soil surface
Remove top layer of soil
The risk can be eliminated by lifting the top layer of soil about two centimeters thick. This removes most of the excess s alt. But now it is necessary to balance the water supply in the greenhouse and therefore to water it vigorously several times at shorter intervals.