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“The King of Kelp”
Laminaria japonica 

Choosing the right kelp species is the first and the most important step in producing a good kelp fertilizer product. Shidai Marine has been growing and improving on our kelp resource since 1968. With over 2,500 acres of the aquaculture farm area dedicated to Laminaria japonica Kelp, Shidai Marine can produce 200,000 tons of fresh kelp annually. We also have our own kelp nursery, with the aim to improve and breed new varieties of Laminaria japonica Kelp.




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About Laminaria japonica Kelp 

The natural classification system states that Laminaria japonica Kelp belongs to ochrophyta, phaeophyceae, laminariales, laminariaceae, laminaria. It is a cold water species of large brown algae. The spore size of Laminaria japonica Kelp is large. The longest can grow up to 22 feet in 33-55 degrees fahrenheit ambient water temperature.


In East Asia, Laminaria japonica Kelp is a popular daily food. The nutritional and medicinal value is high. Research has identified that Laminaria japonica Kelp has many beneficial functions in the human body, including immunoregulation, antineoplastic effects, antioxidation and more.


Laminaria japonica Kelp has a high adsorption capacity and can absorb nutrients and active ingredients much faster and in higher concentrations than other algae. It can synthesize rich natural plant hormones and unique active ingredients, which makes Laminaria japonica Kelp a perfect raw material for our organic kelp fertilizer.


We Grow Our Own Kelp 

Laminaria japonica Kelp was introduced to China from Japan in 1927. This species has been cultivated as food. Since then, it has been breed and improved constantly by Shidai Marine. Thus, Laminaria japonica Kelp contains more nutrients than other algae species.


During the cultivation process, our first step is to grow kelp seedlings to about 12 inches long. We pick the healthiest and strongest seedlings that can proceed to the “kelp clamping” process. During the clamping process, more than 400 workers twist open the ropes which are called “seedling ropes” and the roots of kelp seedlings were put into the gaps of the ropes.


The ropes are about 8 feet long. Roughly 48 kelp seedlings are clamped onto the seedling ropes. During this process, our “seedlings hanging up team” take boats out to the sea to the hang the seedling ropes on the pillars in the ocean. This working stage usually starts at the end of November and finishes around the end of December every year.


When the hanging up stage is over, the kelp will experience a growing stage of three and half months, which is placed in a natural condition. No added chemicals or hormones are added during this stage. During the growing stage, buoyancy adjustments will be needed to made to keep the kelp growing within the groove. The first batch of kelp is harvested at the beginning of April next year.


The special kelp farming advantage ensures the excellent performance of our products at the beginning of the growing process of the kelp.



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