How do you recognise a potassium deficiency?
- Plants are smaller and have a limp stem.
- Smaller flower tops and pale fruits.
- Leaves may have brown spots, brown veins, yellow edges or yellowing veins.
- Plants with a potassium deficiency can absorb less water.
- Reduced yield that is also of poor quality.
What is the (possible) cause?
- Too little potassium in the soil or in the substrate.
- Too much calcium or magnesium content in the soil or substrate.
- Incorrect fertilisation.
- Too much sodium in the root environment.
How can you prevent it?
To prevent a potassium deficiency, you can use our Bat Guano
. This bat manure is very rich in potassium. Use one of our basic nutrients (like Cocos A&B
) to reduce the likelihood of a deficiency. Also keep abiotic factors in mind. These include temperature, light intensity, acidity, amount of moisture and wind strength.
How can you cure it?
To stop a potassium deficiency, you can use a liquid fertiliser with a high potassium content. Examples include Green Sensation
and PK 13-14
What does potassium do for the plant?
Potassium improves the resistance of the plant and helps strengthen the cell wall. It regulates the opening and closing of stomata. These are used to regulate the absorption of carbon dioxide, water vapor and oxygen. Proper functioning of the stomata is essential to the plant. It uses them for photosynthesis, transporting nutrients and remaining cool.