› Forums › SOIL 3600 › SOIL 3600 Question › Reply To: SOIL 3600 Question
2020-09-15 at 10:50 am
#4221
Mario Tenuta
Keymaster
Hello Meaghan.
Release of protons (H+) to soil from roots will decrease soil pH, especially very close to the root. So when plants take up predominantly NH4+ has a nitrogen source, the volume around roots is acidified.
When plants predominantly take up NO3-, they release hydroxyl (OH-) to soil. This increase the pH around roots.
Mario