1、Fertilizer use in aquaculture

Aquaculture pond natural productivity, fertilizer nutrients and forms, and fertilization programs for young-of-year culture and fertilizer-feed strategies are discussed in this chapter.

2、How Much Phosphate Fertilizer to Use per Mu in Aquaculture

rational use of phosphate fertilizer is crucial for enhancing aquaculture productivity and quality. Applications should consider water quality, temperature, substrate, and species while strictly controlling dosage and methods.

3、(PDF) Aquaculture pond fertilization

Pond fertilization increases concentrations of nitrogen, phosphorus and other plant nutrients to stimulate phytoplankton photosynthesis that is the base of the food web culminating in shrimp...

4、Fertilizers in aquaculture

Fertilizer sources are chemical fertilizers and organic (matter) fertilizers, which include agricultural by-products and animal manures. Chemical fertilizer typically is composed of nitrogen, phosphorus, and potas-sium compounds that dissolve readily to provide nutrients to phytoplankton.

Primary Keys of Aquaculture: Fertilizers and Manure

By increasing the availability of plant nutrients through the use of fertilizer and manure, primary output of aquaculture ponds may be increased. Manure and fertilizer are two soil additives that enhance the quality of the soil and aid in plant growth.

Distribution pattern and role of phosphate solubilizing bacteria in the

The present paper reviews the state-of-the-art of various approaches for using rock phosphate as direct source of phosphate fertilizer and the dynamics of phosphate solubilizing bacteria and bacteria induced solubilization of rock phosphate in the fish culture ponds of India.

Fertilizers in aquaculture

Slightly lower stocking rates, relatively greater use of fertilizer and compound feed, and lower rates of mechanical aeration distinguish semi-intensive from intensive pond management strategies.

The shift of phosphorus transfers in global fisheries and aquaculture

Integrated systems, such as the integrated multitrophic aquaculture (IMTA) and integrated aquaculture/agriculture (IAA), use wastes from one species or one subsystem (e.g., aquaculture, crop, and livestock) to serve as food or fertilizer for another.

USE OF FERTILIZER IN FISH POND

In this article, we have briefly described how to use fertilizer properly to ensure good productivity of fish and better economy of the farmers. Generally, nitrate and phosphate fertilizers are used in the pond.

Application of phosphate biofertilizers in agriculture and aquaculture

For farmers, a clear beneficial effect across different soil types, crop species, environmental conditions, and microbial communities will be required to make it worth to adopt bio-fertilizer...

Phosphate fertilizers play a critical role in aquaculture, providing essential nutrients for fish and aquatic organisms while maintaining ecological balance, promoting healthy growth, and enhancing farming efficiency. Below is a detailed guide on the effective use of phosphate fertilizers in aquaculture:

I. Selection and Proportioning of Phosphate Fertilizers

1. Choosing the Right Phosphate Fertilizer:

   • Select phosphate fertilizers based on water quality and the needs of cultured species. Common types include calcium superphosphate, diammonium phosphate, and ammonium sulfate.
   • Calcium superphosphate is suitable for freshwater fish and shrimp farming due to its high phosphorus content.
   • Diammonium phosphate is preferred for marine aquaculture because of its balanced nitrogen-to-phosphorus ratio.

2. Rational Proportioning:

   • Determine dosage and proportions based on water nutrient levels and species requirements. Generally, apply 3–5 kg of phosphate fertilizer per mu (~0.067 hectares) of water surface, adjusted according to specific conditions.
   • Avoid overapplication to prevent water quality deterioration.

II. Application Methods

1. Base Fertilization:

   • Apply phosphate fertilizers to the bottom of the water body to enrich nutrient supply for long-term, stable farming (e.g., in ponds or reservoirs).

2. Supplemental Fertilization:

   • Periodically top up nutrients during farming based on water quality and species needs. Control concentration and dosage to avoid excess.

3. Mixed Application:

   • Combine phosphate fertilizers with other nutrients (e.g., nitrogen, potassium) to improve efficiency and reduce environmental impact. Adjust ratios according to fertilizer properties and species demands.

III. Usage Techniques

1. Immersion Method:

   • Place fertilizers in the water to allow natural dissolution and absorption. Suitable for small water bodies or short-term projects for rapid nutrient replenishment.

2. Splash Application:

   • Directly sprinkle fertilizers onto the water surface. Ideal for large or long-term projects to ensure even distribution.

3. Fertilizer Spreader:

   • Use mechanical spreaders for uniform dispersal in large-scale farms. This method enables precise control of dosage and location.

IV. Precautions and Recommendations

1. Monitor Water Quality:

   • Closely track changes in water quality and adjust fertilization strategies. Halt application immediately if degradation occurs.

2. Prevent Water Pollution:

   • Avoid directing fertilizer runoff into drainage systems or lakes to prevent secondary pollution.

3. Balanced Nutrient Combinations:

   • Pair phosphate fertilizers with complementary nutrients (e.g., nitrogen, potassium) to meet growth demands and maintain ecological balance.

4. Scientific Management:

   • Develop tailored management plans based on environmental conditions and actual needs. Optimal timing and dosage control are key to maximizing economic and ecological benefits.

The use of phosphate fertilizers in aquaculture is a systematic process requiring comprehensive consideration of multiple factors. Rational selection, scientific application, and sustainable management are essential to achieving long-term success in aquaculture.