Secrets you don't know about seaweed fertilizer

Secrets you don't know about seaweed fertilizer

Published Jul 1, 2019 

Seaweed fertilizer is a biological fertilizer produced by scientific processing of marine plant seaweed as the main raw material. The main component is the natural biological active material extracted from seaweed.

Secrets you don't know about seaweed fertilizer

Most seaweed can grow to lengths of over 50 meters. Trace elements found in organic seaweed fertilizers include magnesium, potassium, zinc, iron and nitrogen—all of which are beneficial to plants.

Mechanism of seaweed fertilizer

Seaweed fertilizer has a comprehensive regulation effect on the “crop-soil-fertilizer” system, which is to increase yield and improve quality by stimulating crop growth, regulating soil and improving fertilizer efficiency.

Seaweed contains a large number of special ingredients that are incomparable to terrestrial plants. Alginic acid can reduce the surface tension of water, form a film on the surface of plants, increase the contact area, and make the water-soluble substances easily penetrate into the plant cells. So plants can effectively absorb the nutrients in the algae extract.

Benefits of seaweed fertilizer

Compare to traditional chemical fertilizer,seaweed fertilizer has a good affinity to plants,it is harmless to humans and animals, also environmentally friendly. Long-term use does not lead to structural damage to the soil.

Apply on Soil


Seaweed fertilizer can directly increase soil organic matter, activate various beneficial microorganisms, improve soil micro-ecological environment, and fertilize soil fertility.

  1. Seaweed fertilizer can promote the formation of soil aggregate structure, improve the pore space inside it, increase its permeability.
  2. Seaweed fertilizer can supplement and activate the trace elements in the soil to create a good rhizosphere environment for crop growth.

Apply on Plant


  1. If seeds are treated with seaweed fertilizer before they are sowed, the seeds will germinate better,as it consists of more than 70 nutritional deporting minerals and enzymes.
  2. Promoting root growth,alleviating successive cropping obstacles,increasing the fertilizer application efficiency and slowing plant senescence.
  3. Improving the ability of plants to fight against frost, cold, submersion and drought.
  4. Reducing little leaves、yellow leaves、arbuscular、fruit shrink and other diseases occurrence caused by nutrient deficiency.
  5. Improving the plant’s photosynthesis, which is good for nutrient accumulation, trans- portion and storage.

Precaution for using seaweed fertilizer

Seaweed fertilizer can be used alone or in combination with other fertilizers.

However,seaweed extract belongs to alkaline matter. A complicated chemical reaction will happen when mixed with a high concentration of acidic product. Structure and property will be changed, even phytotoxicity will be caused. Usually, avoid mixing with organic phosphorus, organic chloride and missable oil.

Limitation of seaweed fertilizer

As organic fertilizer’s common con, if you use seaweed fertilizer alone, it may take longer to achieve the above effects. The results will come but maybe not as quickly as you want them.

So, please be patient or you can choose to mix seaweed fertilizer with other suitable fertilizers. Such as microbial fertilizers like trichoderma,bacillus subtilis.

Through this method, it will have better effect on improving soil condition and protect root development.

In all, seaweed fertilizer plays an important and far-reaching role in promoting the production of green and organic food, improving the quality and safety of agricultural products. It is a good fertilizer that truly conforms to the development direction of modern agriculture.

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