Potassium participates in the following primary physiological processes in plants:

• Activates enzymes
  More than 60 enzymes have been shown to require potassium. Potassium affects a number of very important enzymes and keeps them active for longer time periods. Plants well-supplied with potassium are able to produce assimilates for a longer time period and do so more intensively. This leads to higher yields and better crop quality.
• Promotes photosynthesis
  Since potassium is vital for the activity of many enzyme systems involved in the process of photosynthesis, an adequate supply of potassium is essential for plants. Research has shown that green leaves well supplied with potassium are able to assimilate twice as much CO2 as leaves with lower potassium content.
• Expedites the flow of assimilates
  Assimilates are transported from leaves to storage organs or fruits. The flow of assimilates is faster when plants are well supplied with potassium.
• Intensifies storage of pectin, sugars and vegetable oils
  Rapid transportation of assimilates such as pectin, sugars, vegetable oils, etc. to storage organs is important not only because it ensures accumulation of larger quantities of assimilates and therefore a higher yield, but also because evacuation of assimilates from leaves enables photosynthesis to continue.
• Improves assimilation of nitrogen and facilitates synthesis of proteins
  Nitrogen is another very important plant nutrient. Potassium significantly enhances the uptake and utilization of nitrogen. Plants well-supplied with potassium are able to take up more nitrogen and convert it more rapidly into protein. Uptake and utilization of nitrogen will only be optimal if plants are adequately supplied with potassium.
• Improves water-use efficiency
  Plants abundantly supplied with potassium can utilize soil moisture more efficiently than potassium-deficient plants. Therefore, crops that are well supplied with potassium need less water for the production of a given yield than crops that are undersupplied with it.
• Enhance the natural ability of plants to resist stress from drought and cold, pests and disease.