These crop residues contain forms of P that are not available for uptake by growing plants ... not the only source of P in the soil. Manure and other organic residues (e.g., biosolids, composted ...

but its bioavailability (the portion of phosphorus that is absorbed by your body) depends on the type of food source. Plant-based foods have a lower bioavailability of 20% to 50%, because ...

Phosphorus plays a crucial role in energy transfer and root development in plants. Phosphorus-based ... Organic fertilizers ...