Indium is the 68th most abundant element in Earth's crust at approximately 50 ppb. This is similar to the crustal abundance of silver, bismuth and mercury. It very rarely forms its own minerals, or occurs in elemental form.
In fertilizer, phosphorus comes in the form of phosphate, which dissolves over time to strengthen the root system and encourage longer plant growth. Some of the functions of phosphorus are to: 1  Stimulate growth. 2  Phosphorus gives plants a strong starting point in developing a root filter system in the soil.or example, if the fertilizer analysis is 12-2-14, the fertilizer contains 2% phosphorus. The other numbers indicate nitrogen and potassium, respectively. It should be noted that some municipalities ban the use of phosphorus on lawns.
A lot of the phosphorus in soils is also unavailable to plants. Soil phosphorus becomes unavailable to plants through several routes: 1  Bacteria: Bacteria convert plant-available phosphate into organic forms that are then not available to plants.2  Although other bacteria make phosphate available by mineralisation, the contribution of this is small.hosphorus moves in a cycle through rocks, water, soil and sediments and organisms. Here are the key steps of the phosphorus cycle 1  : Over time, rain and weathering cause rocks to release phosphate ions and other minerals. 2  This inorganic phosphate is then distributed in soils and water.