Manure: Animal manure, such as cow, horse, poultry, or sheep manure, is a rich source of organic nitrogen. It releases nitrogen slowly as it decomposes, providing a steady supply to plants.

Compost: Compost is made from organic matter like kitchen scraps, yard waste, and plant residues. It contains a variety of nutrients, including nitrogen, in a form that plants can readily absorb.

Cover Crops: Leguminous cover crops like clover, vetch, and alfalfa have the ability to fix atmospheric nitrogen through symbiotic relationships with nitrogen-fixing bacteria. When these cover crops are incorporated into the soil, they release nitrogen, enriching the soil.

Green Manure: Similar to cover crops, green manure crops like mustard, rye, and buckwheat can be grown specifically to add organic matter and nitrogen to the soil. They are typically grown for a short period and then turned into the soil before flowering to release their nutrients.

Fish Emulsion: Fish emulsion is a liquid organic fertilizer made from fish waste. It's high in nitrogen and also contains other nutrients like phosphorus and potassium.

Blood Meal: Blood meal is a dry powder made from dried animal blood. It's a concentrated source of nitrogen and can be used to provide a quick nitrogen boost to plants.

Feather Meal: Feather meal is made from processed poultry feathers and is high in nitrogen. It releases nitrogen slowly over time as it breaks down in the soil.

Soybean Meal: Soybean meal is a byproduct of soybean oil production and is often used as an organic fertilizer. It's rich in nitrogen and also contains other nutrients like phosphorus and potassium.

P dynamic accumulators
Bone Meal: Bone meal is made from ground-up animal bones and is a rich source of phosphorus, typically in the form of calcium phosphate. It's slow-release and can provide a steady supply of phosphorus to plants over time.

Rock Phosphate: Rock phosphate is a natural mineral rock that contains high levels of phosphorus in the form of phosphate minerals. It's a slow-release fertilizer that provides phosphorus to plants as it gradually breaks down in the soil.

Guano: Guano, which is the excrement of seabirds or bats, is a valuable organic fertilizer rich in phosphorus, nitrogen, and other nutrients. It can be used as a soil amendment or a component of compost.

Fish Bone Meal: Fish bone meal is made from ground-up fish bones and is another organic source of phosphorus. It's particularly beneficial for promoting root development and flowering in plants.

Manure: Animal manure, such as cow, horse, poultry, or sheep manure, contains phosphorus along with other nutrients. Using composted manure as a soil amendment can help replenish phosphorus levels in the soil.

Seaweed: Seaweed or kelp meal is a natural organic fertilizer that contains phosphorus, along with a range of other nutrients and trace minerals. It can be used as a soil amendment or added to compost.

Bat Guano: Bat guano is another type of organic fertilizer derived from bat excrement. It's high in phosphorus and nitrogen and can be used to improve soil fertility and promote plant growth.

Cover Crops: Some leguminous cover crops, such as clover and vetch, have the ability to accumulate phosphorus in their biomass. When these cover crops are incorporated into the soil, they release phosphorus as they decompose, enriching the soil.

imestone: Limestone is a naturally occurring sedimentary rock composed primarily of calcium carbonate. It's commonly used as a soil amendment to raise soil pH and provide calcium to plants.

Gypsum: Gypsum, or calcium sulfate, is another natural mineral source of calcium. It can be used as a soil amendment to improve soil structure, reduce soil compaction, and supply calcium to plants.

Eggshells: Crushed eggshells are a source of calcium carbonate and can be added to compost or directly incorporated into the soil to provide calcium to plants. Eggshells break down slowly, releasing calcium over time.

Bone Meal: Bone meal is made from ground-up animal bones and is a rich source of calcium along with phosphorus. It can be used as a soil amendment to provide calcium to plants and improve soil fertility.

Seaweed: Seaweed or kelp meal is a natural organic fertilizer that contains calcium along with other nutrients and trace minerals. It can be used as a soil amendment or added to compost to boost calcium levels in the soil.

https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Chemistry_for_Changing_Times_(Hill_and_McCreary/20%3A_Chemistry_Down_on_the_Farm/20.01%3A_Farming_and_Chemicals-_Fertilizers

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Manure: Animal manure, such as cow, horse, poultry, or sheep manure, is a rich source of organic nitrogen. It releases nitrogen slowly as it decomposes, providing a steady supply to plants.

Compost: Compost is made from organic matter like kitchen scraps, yard waste, and plant residues. It contains a variety of nutrients, including nitrogen, in a form that plants can readily absorb.

Cover Crops: Leguminous cover crops like clover, vetch, and alfalfa have the ability to fix atmospheric nitrogen through symbiotic relationships with nitrogen-fixing bacteria. When these cover crops are incorporated into the soil, they release nitrogen, enriching the soil.

Green Manure: Similar to cover crops, green manure crops like mustard, rye, and buckwheat can be grown specifically to add organic matter and nitrogen to the soil. They are typically grown for a short period and then turned into the soil before flowering to release their nutrients.

Fish Emulsion: Fish emulsion is a liquid organic fertilizer made from fish waste. It's high in nitrogen and also contains other nutrients like phosphorus and potassium.

Blood Meal: Blood meal is a dry powder made from dried animal blood. It's a concentrated source of nitrogen and can be used to provide a quick nitrogen boost to plants.

Feather Meal: Feather meal is made from processed poultry feathers and is high in nitrogen. It releases nitrogen slowly over time as it breaks down in the soil.

Soybean Meal: Soybean meal is a byproduct of soybean oil production and is often used as an organic fertilizer. It's rich in nitrogen and also contains other nutrients like phosphorus and potassium.

P dynamic accumulators
Bone Meal: Bone meal is made from ground-up animal bones and is a rich source of phosphorus, typically in the form of calcium phosphate. It's slow-release and can provide a steady supply of phosphorus to plants over time.

Rock Phosphate: Rock phosphate is a natural mineral rock that contains high levels of phosphorus in the form of phosphate minerals. It's a slow-release fertilizer that provides phosphorus to plants as it gradually breaks down in the soil.

Guano: Guano, which is the excrement of seabirds or bats, is a valuable organic fertilizer rich in phosphorus, nitrogen, and other nutrients. It can be used as a soil amendment or a component of compost.

Fish Bone Meal: Fish bone meal is made from ground-up fish bones and is another organic source of phosphorus. It's particularly beneficial for promoting root development and flowering in plants.

Manure: Animal manure, such as cow, horse, poultry, or sheep manure, contains phosphorus along with other nutrients. Using composted manure as a soil amendment can help replenish phosphorus levels in the soil.

Seaweed: Seaweed or kelp meal is a natural organic fertilizer that contains phosphorus, along with a range of other nutrients and trace minerals. It can be used as a soil amendment or added to compost.

Bat Guano: Bat guano is another type of organic fertilizer derived from bat excrement. It's high in phosphorus and nitrogen and can be used to improve soil fertility and promote plant growth.

Cover Crops: Some leguminous cover crops, such as clover and vetch, have the ability to accumulate phosphorus in their biomass. When these cover crops are incorporated into the soil, they release phosphorus as they decompose, enriching the soil.

imestone: Limestone is a naturally occurring sedimentary rock composed primarily of calcium carbonate. It's commonly used as a soil amendment to raise soil pH and provide calcium to plants.

Gypsum: Gypsum, or calcium sulfate, is another natural mineral source of calcium. It can be used as a soil amendment to improve soil structure, reduce soil compaction, and supply calcium to plants.

Eggshells: Crushed eggshells are a source of calcium carbonate and can be added to compost or directly incorporated into the soil to provide calcium to plants. Eggshells break down slowly, releasing calcium over time.

Bone Meal: Bone meal is made from ground-up animal bones and is a rich source of calcium along with phosphorus. It can be used as a soil amendment to provide calcium to plants and improve soil fertility.

Seaweed: Seaweed or kelp meal is a natural organic fertilizer that contains calcium along with other nutrients and trace minerals. It can be used as a soil amendment or added to compost to boost calcium levels in the soil.

https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Chemistry_for_Changing_Times_(Hill_and_McCreary/20%3A_Chemistry_Down_on_the_Farm/20.01%3A_Farming_and_Chemicals-_Fertilizers

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