xtsho
Well-Known Member
Why are you using aluminum sulfate to lower the pH? There are much better options. Also, all you should need to do is pH the nutrient solution. I would get rid of that aluminum sulfate and use phosphoric acid instead. Plants don't need aluminum.
I bought some of that to use on my blueberries that like acidic soil. Someone on this site brought up the aluminum and after researching I decided not to use it on a food crop and I would never use it on cannabis. I still have an unopened bag from a few years ago in the greenhouse.
Aluminum can interfere with phosphorus uptake along with other essential elements. It can also have a negative effect on root growth.
"Aluminum lowers plant N uptake and N-use efficiency because Al inhibits root growth."
pubmed.ncbi.nlm.nih.gov
academic.oup.com
I bought some of that to use on my blueberries that like acidic soil. Someone on this site brought up the aluminum and after researching I decided not to use it on a food crop and I would never use it on cannabis. I still have an unopened bag from a few years ago in the greenhouse.
Aluminum can interfere with phosphorus uptake along with other essential elements. It can also have a negative effect on root growth.
"Aluminum lowers plant N uptake and N-use efficiency because Al inhibits root growth."
Aluminum-Nitrogen Interactions in the Soil-Plant System - PubMed
Aluminum (Al) is the most abundant metal in the Earth's crust and is not an essential element for plant growth. In contrast, nitrogen (N) is the most important mineral element for plant growth, but this non-metal is often present at low levels in soils, and plants are often N deficient. Aluminum...
The role of the root apoplast in aluminium-induced inhibition of root elongation and in aluminium resistance of plants: a review
AbstractBackground. Aluminium (Al) toxicity is the most important soil constraint for plant growth and development in acid soils. The mechanism of Al-induc
academic.oup.com