Does tea seed cake need detoxification treatment after pond clearing?

Tea seed cake, also called tea seed meal, is the residue left after oil is pressed from the fruit of wild Camellia oleifera, and contains 12-18% tea saponin. Tea saponin is a hemolytic toxin that can dissolve the red blood cells of fish, so it can kill wild trash fish, loaches, river snails, freshwater mussels, frog eggs, tadpoles and some aquatic insects. So, does tea seed cake need detoxification for pond clearing?

1. Does tea seed cake need detoxification for pond clearing?

Rapeseed cake does not need detoxification for pond clearing. As a green agent, it leaves no toxic residue and is widely used for clearing fish ponds and for killing pests in rice fields and high-grade lawns. It is safe to use and generally decomposes on its own in about 3 days; simply test the water before stocking.

2. How to use tea seed cake for pond clearing

1. Before use, crush the tea seed cake first; a degree of crushing similar to the sawdust you normally see is sufficient, then soak it for 24 hours. It is recommended that for 1 kg of tea seed cake powder, the soaking water should be no less than 20 kg.

2. It is recommended to clear the pond with water present, using 20-30 kg per mu for every 50 cm of water depth, or using 30 g of tea seed cake powder per cubic meter of water. It is best to choose a sunny morning to splash the soaked liquid, together with the residue, evenly over the whole pond.

3. When clearing ponds that contain mud-burrowing aquatic animals such as loaches or rice field eels, the dosage per mu can be increased by 5-10 kg. Pairing each kg of tea seed cake with 1 liang of quicklime and half a liang of salt can strengthen the pond-clearing effect.

3. Precautions for using tea seed cake to clear ponds

1. Using tea seed cake to clear ponds has a very obvious killing effect on wild trash fish, frog eggs, tadpoles, river snails, leeches and some aquatic insects. It also shows a certain toxicity to shellfish, sandworms and the like in the water, but its killing effect on some harmful bacteria and aquatic plants is relatively poor.

2. Tea seed cake clearing is very thorough against wild trash fish and the like, but its toxicity to shrimp and crabs is not great, so those of us who raise red swamp crayfish can use tea seed cake to clear ponds. Even during the farming process, if there are too many wild trash fish in shrimp and crab ponds, tea seed cake can be used at 8-12 jin per mu to kill the wild trash fish.

3. Tea seed cake can not only clear ponds but also fertilize the water. It is especially suitable for ponds with relatively lean water quality, a lack of base fertilizer, and frequent occurrences of wild trash fish or muddy water. If the water quality is already very fertile and the silt is very thick, then it is not recommended to use tea seed cake to clear the pond.

Finally, the editor reminds everyone that when choosing tea seed meal, try as much as possible to choose high-quality tea seed meal that is black with a hint of red, pungent, and very brittle. This kind of tea seed meal has strong medicinal potency and a good pond-clearing effect.