What happens to phosphorus that erodes from rock and soil? Water erodes rock and soil containing phosphorus, which dissolves in the water. The phosphorus joins with the oxygen to form phosphate. … Plants absorb phosphates through the water, which is concentrated into plant tissue.
Phosphorous is weathered out of rocks by weak carbonic acid that forms in the atmosphere. It puts phosphorous into solution and it is carried down to the oceans where it often re-precipitates as phosphate rock or incorporated into some marine organisms (such as shark teeth or bones).
As these rocks weather and erode, dissolved phosphates enter the soil and travel via rivers to the ocean. Primary producers (photosynthesizing organisms), both on land and in the ocean, absorb the phosphate needed to produce organic compounds necessary for the survival and growth of all organisms.
Weathering of rocks and minerals release phosphorus in a soluble form where it is taken up by plants, and it is transformed into organic compounds. … After death, the animal or plant decays, and phosphorus is returned to the soil where a large part of the phosphorus is transformed into insoluble compounds.
Much of the phosphorus on Earth is tied up in rock and sedimentary deposits, from which it is released by weathering, leaching, and mining. Some of it passes through freshwater and terrestrial ecosystems via plants, grazers, predators, and parasites, to be returned to those ecosystems by death and decay.
Soil contains minerals that are rich in phosphorus. These minerals are classified into primary and secondary minerals. Minerals break down over time (a process referred to as weathering) and release phosphorus in the soil solution for plant uptake.
Phosphorus is most commonly found in rock formations and ocean sediments as phosphate salts. Phosphate salts that are released from rocks through weathering usually dissolve in soil water and will be absorbed by plants. … Eventually, phosphorus is released again through weathering and the cycle starts over.
Unlike carbon and nitrogen, most of the phosphorous on Earth is stored in soil and rocks in the form of phosphate. Phosphate is one molecule of phosphorous surrounded by four molecules of oxygen, or PO43-. Plants can absorb phosphate directly through their roots.
Humans have had a significant impact on the phosphorus cycle due to a variety of human activities, such as the use of fertilizer, the distribution of food products, and artificial eutrophication. … When levels of phosphorus are too high, the overabundance of plant nutrients serves to drive the excessive growth of algae.
The main food sources are the protein food groups of meat and milk, as well as processed foods that contain sodium phosphate. A diet that includes the right amounts of calcium and protein will also provide enough phosphorus.
The global phosphorus cycle has four major components: (i) tectonic uplift and exposure of phosphorus-bearing rocks to the forces of weathering; (ii) physical erosion and chemical weathering of rocks producing soils and providing dissolved and particulate phosphorus to rivers; (iii) riverine transport of phosphorus to …
Phosphorus is a vital nutrient for plant and algae growth. If there was no phosphorus, our plants would not be able to grow. Without plants, the Earth would not be able to produce oxygen. Without the production of oxygen, humans and other forms of life would cease to survive.
The phosphorus cycle is the movement of phosphorus from the rocks where it’s found into the environment and, finally, into the plants and animals that need it. Forces like rain and freezing and thawing of rocks erode them, or break them down over time.
Phosphorus as a plant-essential nutrient
Phosphorus is present in plant and animal cells and is vital to all plants for harvesting the sun’s energy and converting it into growth and reproduction.
During the processes of soil formation, phosphorus enters the soil solution and is subsequently converted into fixed phosphorus or absorbed by plants and eventually deposited on the soil surface as plant or animal residues. Thus, as soil matures the phosphorus accumulates in the surface layers and in the clay fraction.
Phosphorus’ primary role in a plant is to store and transfer energy produced by photosynthesis for use in growth and reproductive processes. Soil P cycles in a variety forms in the soil (Figure 1). Adequate P levels promote root growth and winter hardiness, stimulate tillering, and hasten maturity.
Phosphorus will be most available to the plant within a few day s to two weeks after fertilizer addition, slowly dropping as time goes on. When applied in the fall, P will stay in the soil for as long as four to six months before plant uptake.
The largest reservoir of phosphorus is in sedimentary rock. It is in these rocks where the phosphorus cycle begins. When it rains, phosphates are removed from the rocks (via weathering) and are distributed throughout both soils and water. Plants take up the phosphate ions from the soil.
Phosphorus ignites at approximately 86°F (30°C) in air; the ignition temperature is higher when the air is dry. Phosphorus reacts violently with oxidants, halogens, some metals, nitrites, sulfur, and many other compounds, causing a fire hazard. The agent burns rapidly, releasing dense, white irritating fumes.
One influence on phosphorus availability is the soil’s pH level. If soils are too acidic, phosphorus reacts with iron and aluminum. That makes it unavailable to plants.
Rainfall can cause varying amounts of phosphates to wash from farm soils into nearby waterways. Phosphate will stimulate the growth of plankton and aquatic plants which provide food for fish. … This process, in turn, causes the death of aquatic life because of the lowering of dissolved oxygen levels.
The Phosphorus Cycle
Some of the organic phosphorus can be released into the soil solution as phosphate ions that are immediately available to plants. Much of the organic phosphorus is taken up by the microbes themselves. As microbes die, the phosphorus held in their cells is released into the soil.
Phosphorus is a limiting nutrient in many terrestrial and aquatic ecosystems. … As the growth of algae and aquatic plants goes unchecked, the lake slowly stagnates, becoming fouled. Artificial eutrophication can occur when run-off rain water from agricultural fertilizers that are used in excess reaches lakes.
How does phosphorus initially enter the cycle? Rocks create phosphate ions/minerals which is let out from rain. … Herbivores and carnivores return phosphorus to the cycle by dying and decomposing into the soil. Fungi helps quicken the process.
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