Does soil fertility affect photosynthesis?

Absolutely, PS relies on Nitrogen to build cell proteins, growth. Phosphates/Phosphorus for respiration and growth. Potassium is the “biggy” in PS, respiration, and flowering/fruiting with the second mineral being Magnesium and Mg compounds. read more

Photosynthesis is a plant process, it is indirectly related to soil fertility, a thin poor soil will have small poor plants, a thick rich soil will support thriving healthy plants which will as a result have more photosynthisis. read more

This decomposed material is entered back into the soil as nutrients. It is hence as to why areas such as marshes or forests are so good for plants - so much life had died there that the soil becomes nutrient rich for new life to thrive before dying as well. read more

Hypothesis: The negative effect of salinity on net photosynthesis is greater under high light conditions. The researchers reasoned that at low light, photosynthesis is limited primarily by light, but when light is plentiful, leaf CO2 becomes the most limiting factor. read more