Cl rarely deficient in nature but it is essential in plant nutrition. It is found in the soil as anion and plays two roles in plant nutrition:
- Cl is integral to the process in which water is split, thus
releasing H+ ions and O2 gas - Cl is a mobile anion within the plant where is functions in
osmoregulation affecting cellular expansion and stomatal
opening and closing. It also functions as a counter-balance to cations to maintain charge neutrality.
