Your plant asks for Potassium (K), why?


Your plant asks for Potassium (K), why?

Potassium is a very important nutrient for your crop. The presence of Potassium (K) ensures the smooth running of a large number of processes inside your plant. For example, the plant uses potassium for photosynthesis, but also for the production and transport of carbohydrates, energy supplies and moisture management. Potassium (K) is also called a quality element and that has everything to do with the fact that it is involved in so many processes. For example, potassium (K) also ensures quality characteristics such as taste, color, smell and shelf life. It will therefore be clear with a Potassium shortage (K) that all functions will be carried out to a lesser extent with often very undesirable results. Pay attention because an excess can cause salt damage.

The degree of influence of potassium on the plant

The influence of potassium in the plant is highest after nitrogen (N). It is therefore strange that much less is known about Potassium. Probably this has to do with the fact that potassium is nowhere “built in”, such as nitrogen in proteins and enzymes. Potassium only occurs in dissolved form in the plant as potassium ions (K +). The dry weight of a plant consists of 1.0% of potassium. This average varies from 0.5 to 5.0% depending on the crop. Potatoes, onions and cabbage crops are, for example, highly potassium-rich.

Moisture balance and cell tension

Potassium regulates the water absorption (osmosis), because it is present in the cell fluid as K + ion. Cell tension is built up by the absorption of water in the cell. So you can say that Potassium contributes to the firmness of the plant. In addition, the sturdy cell walls in the crop help to make it less susceptible to pests and infestation, especially by fungi. Osmosis also plays an important role in opening and closing the stomata of the plant. This mechanism is important not only for evaporation, but also for the inlet of CO2 (carbon dioxide) and therefore for photosynthesis.

Potassium makes crops more resistant to the cold and that is not unimportant for winter crops (winter hardiness). The effect is actually twofold: on the one hand, potassium as salt in the cell fluid prevents rapid freezing of the cell fluid. At the same time, potassium ensures good water absorption. What most people probably do not know is that frost damage is actually drying the plant.

Your plant asks for Potassium (K), why? Your plant asks for Potassium (K), why?-2

Transport of nitrogen and sugars

Potassium is absorbed by the roots as K + (positively charged ion). Potassium is therefore used by the plant as a compensation for negatively charged ions such as nitrate, phosphate and amino acids. The plant is therefore able to provide transports, for example from sugars and starch from the leaves to the other parts of the plant.

How do I recognize potassium deficiency and potassium excess?

Despite the great importance of potassium, the element does not receive as much attention during fertilization. That is because hardly ever real problems arise. Potassium is very mobile. If there is a shortage, the plant itself ensures that the places where the element is most needed are provided.

In the absence of potassium, thinner cell walls are formed, which makes the crop less firm. In addition, a shortage occurred in a weak growth and desiccation phenomena. Very specific are the dead edges of the older leaves. The potassium has been removed there, so that the moisture balance does not function properly. With an absolute potassium deficiency, everything stagnates. The plant will then die.


To replenish Potassium deficiencies we recommend CANNA POTASSIUM (K)

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