Deficiency may cause abnormalities in grass plants affecting reproduction and growth. Some of the potassium deficiency symptoms are:
  • Chlorosis: a yellowing of the leaves which may lead to shedding and defoliation.
  • Stunted growth: Potassium is a growth catalyst and lack of it could lead to slow growth or poor root and stem development. 
  • Poor resistance to ecological changes: Reduced availability of potassium will directly result in less fluid circulation and translocation of nutrients in grass plants. This will directly make grass plants susceptible to temperature changes.
  • Weakened plant immunity: Potassium is a "health booster". It improves a lawn’s resistance to fungal diseases, harsh weather and drought.
  • Low Soil pH: There is a direct relation between soil acidity and potassium availability in turf. Soils with low pH (under 6.2) will not only inhibit potassium uptake by plants, but many other key nutrients also.