First, pond clarification. Using ammonia to clear the pond can help reduce fish diseases and improve disease prevention. In addition, applying ammonia during pond preparation also serves as a form of fertilization, which can boost fish production effectively.
The method for pond clarification involves applying approximately 50 kg of ammonia per acre, with a water depth of 6 to 10 cm. The ammonia should be diluted in water and evenly distributed throughout the pond. After treating the pond with ammonia, it is generally recommended to wait 7 to 10 days before introducing fish. However, if the fish seedlings are urgently needed, you can pump out the water the next day and add a small amount of fresh water to rinse the pond. If lime was used instead, fish can be introduced after 8 to 10 days.
Second, fertilization. Ammonia acts as a quick-acting liquid nitrogen fertilizer and can be used as a top-dressing. According to test results, adding 1 kg of ammonia can lead to the production of about 0.8 kg of maggots and squid. If ammonia is applied once every 10 days from April to November, at a rate of 5 kg per mu, it can increase fish production by 90 to 120 kg per mu.
Application method: Place 5 kg of ammonia into a container, then tilt the container slightly into the pond. Open the container’s mouth so that the ammonia gradually diffuses into the water. After 5 days, completely pour out the remaining liquid into the pond.
Fertilization notes: The maximum amount applied each time should not exceed 10 kg per acre. Avoid using it in ponds with standing water or newly dug ponds. It is better to alternate with calcium superphosphate. After applying ammonia, be cautious of residual ammonia levels in the water, and avoid harvesting fish within 5 days of application.
Third, disease prevention and treatment. Ammonia can be used to control fish diseases in ponds through two main methods. First, soak 1 kg of rhubarb with 20 kg of 0.3% ammonia solution for 12 hours, then sprinkle the mixture over the entire pond to treat grass carp hemorrhagic disease, bacterial rot, and other issues like white mouth and head disease. Second, based on the weak interspecies competition among G. trituberculatus and the need for good water clarity, regularly apply ammonia and fertilizer to inhibit its reproduction and maintain a healthy aquatic environment.
What is Natural Extracts?
Natural extracts are biologically active compounds or mixtures extracted from various plants and animals or microorganisms in nature. These extracts contain a wealth of chemicals, Such as alkaloids, flavonoids, saponins, polysaccharides, volatile oils, collagen, proteins, peptides, enzymes, antibodies, antibiotics, Amino Acids, nucleic acids, enzymes, monosaccharides, oligosaccharides, polysaccharides, glycoproteins, resins, colloids, lignin, vitamins, fats, oils, waxes, alkaloids, volatile oils, flavonoids, glycosides, phenylpropanoids, organic acids, phenols, quinones, steroids And antibiotics, etc.
Natural extracts have received attention in several fields due to their wide range of sources and potential multiple uses. They can be used in the pharmaceutical industry as ingredients in medicines or health supplements; In the cosmetic industry, as a functional or active ingredient to improve skin health; In the food industry, as an additive or flavoring agent to increase the nutritional value and taste of food; In addition, they have different applications in the fields of agriculture, environmental protection and scientific research.
Extraction methods include solvent extraction method, ultrasonic extraction method, microwave extraction method, enzyme extraction method, supercritical fluid extraction method and microwave assisted extraction method, etc. The choice of which method usually depends on the nature of the substance to be extracted and the target requirements of the final product. With the development of technology, the extraction process is continuously optimized to improve extraction efficiency, reduce environmental impact and maintain the biological activity of the extract.
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