I have received conflicting information about the exchange of ions during K+ uptake by roots in hydroponic systems. The first explanation is the root releases H+ in exchange for K+ to maintain electronegativity in the hydroponic solution thus lowering the pH. The second explanation is the root releases carbonates in exchange for K+ thus raising the pH. Which explanation is correct?
I know that there are different K+ transporters (low affinity at high K+ concentration, high affinity at low K+ concentration). Could these conflicting explanations be based on different K+ transporters?
Thank you!
When the potassium cation is absorbed and utilized as Paul Milham explains the charge balance is maintained in the plant by secreting into the soil a hydrogen ion maintaining the cationic balance. I am attaching the distinctly difference the absorption of Nitrogen as ammonium has on the soil pH compared to the absorption of nitrate as indicated by the pH color indicator.
The Hydrogen ion is always a source of ion transfer with potassium. In hydroponic system also...
- Badges
- Science topic
- Similar topics
- Biological Science
- Biochemistry
- Biochemical Techniques
- Analytical Chemistry
- pH