Managing Soil Salinity Levels
The best way to manage the salt levels in your turf are explained in this article.
Higher soil salinity levels in your turf?
- Higher salt levels are caused by an increase in salt ions: Ca+2, Mg+2, Na+, K+, Cl−, SO4-2, HCO3−, NO3−, CO3-2 (at pH >9.0).
- Salt ions come from dissolution of minerals, irrigation water, fertilizers, soil amendments, high water table, saltwater spray, insufficient leaching.
- High soil salt levels cause the following problems: water deficit, ion toxicity, ion (nutrient) imbalances, and poor soil permeability. Salt-affected soils are classed as: saline (high salts), sodic (high sodium) or saline-sodic (high salt and sodium).
- Assess the site to evaluate potential risk.
- Restrict salt addition through choice of fertilizer type. Use salt-tolerant grass cultivars.
- Leach salt out of the rootzone.
- Check (and amend if possible) water quality. Ensure nutrients are in balance.
- Encourage good rooting.
- Monitor situation and adapt as required (season specific).