How does phosphorus enter the soil or water?
How does phosphorus enter the soil or water? Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms. Over time, rain and weathering cause rocks to release phosphate ions and other minerals. This inorganic phosphate is then distributed in soils and water. Phosphorus in soil can end up in waterways and eventually oceans. How are phosphate ions absorbed by plant roots? Uptake occurs around the root tip, into epidermal cells with their associated root hairs and into cells in the outer layers of the root cortex. Further back along the root axis, phosphate can also be taken...