1、Polyphosphate

Algae fertilizers, especially PEA, support plant growth and soil health, offering a promising solution for sustainable phosphorus management in agriculture.

2、Evaluating potential of green alga

Algae are capable of accumulating nutrients from aqueous waste, which makes them a potential fertilizer. The ability of the fast growing Chlorella vulgaris strain IPPAS C1 to accumulate phosphorus (P) was probed in V-shaped plastic foil photobioreactors.

3、(PDF) Green algae

Thus, the use of a suspension of green algae in agriculture saves on the use of fertilizers, due to a one-time application of the crop to the soil. Moreover, seed treatment with a suspension...

Polyphosphate

In this study, we developed a polyphosphate-enriched algae fertilizer (PEA) and conducted comparative experiments with chemical P fertilizers (CP) through soil and solution cultures, as well as crop growth trials.

Uptake of potassium by algae and potential use as biofertilizer

Use of algal biomass as a biofertilizer for nitrogen fixation (Rippka et al. 1971) is an old practice, however use of algae for potassium can make algae a complete fertilizer.

Phosphorous Utilization in Microalgae: Physiological Aspects and

Furthermore, it comprehensively explores the strategies employed by microalgae to cope with phosphorus limitation, such as the activation of high-affinity phosphate transporters and the synthesis of phosphorus storage compounds.

The significance of phosphorus in algae growth and the subsequent

Insufficiency of nutrients such as nitrogen and phosphorus in the water body can cause the growth of algae to stagnate or decrease in reproduction, resulting in high mortality of zooplankton and a decline in the population of zooplankton.

The Use of Algae as Fertilizer: Best Option for Sustainability

Coastal farmers collected seaweed from the shores and transported it to their fields, knowing that algae are rich in essential nutrients like nitrogen, phosphorus, potassium, and a variety of micronutrients, which also help improve soil structure by increasing water retention and aeration.

Phosphorus biofertilizer from microalgae

This is because algae can acquire and store phosphorus through luxury uptake and the phosphorus-enriched algal biomass can be applied as a fertilizer to soil in return.

Algae as Bio

Eukaryotic green algae and prokaryotic blue algae are examples of photosynthetic organisms known as microalgae. They have a lot of promise as biological resources in fields including medicine, health care, feed, and fuel.

Green algae, as a member of aquatic plants, play a crucial role in nature. They not only purify water quality but also provide food sources for other aquatic organisms. due to the specificity of their growth environment, green algae have relatively high nutrient demands. Whether green algae can be fertilized with phosphorus and potassium can be analyzed from the following aspects:

1. The Role of Phosphorus and Potassium Fertilizers

Phosphorus and potassium are two common fertilizer components essential for plant growth. Phosphorus fertilizers promote root development, enhancing a plant’s ability to absorb water and nutrients. Potassium fertilizers, meanwhile, improve disease resistance, cold tolerance, and photosynthetic efficiency, while also increasing crop yield and quality.

2. Nutrient Requirements of Green Algae

As aquatic plants, green algae require significant amounts of nutrients during growth, particularly nitrogen, phosphorus, and potassium. These elements are fundamental for photosynthesis, development, and reproduction. Thus, appropriate supplementation of phosphorus and potassium fertilizers is highly beneficial for their growth.

3. Growth Environment of Green Algae

Green algae primarily thrive in organic-rich water bodies, such as rivers, lakes, and ponds. While these environments are nutrient-rich, they are also prone to pollution. Consequently, green algae demand higher nutrient levels, especially phosphorus and potassium. Inadequate phosphorus or potassium in water bodies can stunt algal growth or even cause mortality.

4. The Relationship Between Green Algae and Phosphorus-Potassium Fertilizers

Although green algae require phosphorus and potassium, this does not mean all scenarios necessitate fertilization. Excessive application of these fertilizers can negatively impact algal growth. Overabundance of phosphorus, for instance, leads to eutrophication, disrupting aquatic ecosystems. Similarly, excessive potassium inhibits nitrogen uptake in plants, hindering normal growth.

5. Fertilizer Application for Green Algae

For green algae, proper dosing of phosphorus and potassium is critical. Generally, 0.3–0.5 kg of phosphorus fertilizer and 0.5–1 kg of potassium fertilizer per mu (~0.067 hectares) of water surface are recommended. specific dosages depend on water conditions, algal species, and growth stages. Careful selection and application of fertilizers are essential to avoid pollution or adverse effects on algal health.

green algae can benefit from phosphorus and potassium fertilizers, but their use must be scientifically tailored. Appropriate application supports healthy growth, while overuse harms both algae and aquatic ecosystems. Following rational principles ensures sustainable algal proliferation and water quality.