1、Seaweed Fertilizers: Types, Functions, Formulations

Seaweed fertilizers are organic fertilizers made from seaweed, providing an array of macro and micronutrients that can benefit plants and soil. We shared a more detailed article about their features and principles, today let’s go deeper to talk about their components and formulations.

2、Current Trends on Seaweeds: Looking at Chemical Composition

This natural seaweed fertilizer may partially substitute the prevailing synthetic fertilizer. The various elements present in seaweed such as amino acids, macro and micro-nutrients, vitamins, auxins, cytokinin and abscisic acid (ABA) like growth substances can contribute to enhanced growth and crop yield via modulating metabolic pathways.

3、Seaweed components, properties, and applications

Some seaweed components exhibit valuable functional properties including nutritional and health benefits, biologically active compounds, and physicochemical qualities.

4、Liquid Biofertilizers from Seaweeds: A Critical Review

Seaweeds are an economical and natural source of bio-fertilizer and bio-stimulants. The extracts of marine macroalgae are widely used as liquid bio-fertilizers in crop production. The application of seaweed extracts was found to affect the growth and yield of many crops positively.

(PDF) SEAWEED FERTILIZERS IN MODERN AGRICULTURE

The seaweed fertilizers contained a lot of nutrients such as nitrogen, phosphorus, potash and plant growth hormones and trace element.

What's in Seaweed Fertilizer?

Seaweed, a rich source of essential nutrients, provides a natural and balanced blend of macronutrients crucial for plant growth and development. These include: Nitrogen (N): A key component of chlorophyll, nitrogen is essential for photosynthesis, leaf growth, and overall plant vigor.

What Does Seaweed Fertilizer Contain

Seaweed fertilizer, derived from the decomposition of marine seaweed, comes in various forms, including concentrated liquid and dried organic material. It is rich in over 60 essential minerals, vitamins, and amino acids that promote plant growth and development.

What are the effects and functions of seaweed fertilizer? Which type of

Seaweed extracts contain seaweed polysaccharides (such as alginic acid, fucoidan, and laminarin) that are lacking in terrestrial crops, growth stimulants (including cytokinins, auxins, gibberellins, abscisic acid, indoleacetic acid, polyphenols, and other natural components), mannitol, betaine, alginic acid, unsaturated fatty acids, organic ...

Seaweed

Seaweed-based fertilizers are of particular interest due to their high content of bioactive compounds such as polysaccharides, phytohormones, amino acids and trace elements. These components have the ability to interact with plants in a way that enhances their ability to withstand adverse conditions and maximize their efficiency.

What is seaweed fertilizer? What does it do to plants?

Relevant studies have shown that seaweed has more than 66 active ingredients and active substances, which can provide vegetables with various nutrients, various amino acids, polysaccharides, vitamins, and cytokines.

Seaweed fertilizer is a nutrient-rich product derived from seaweed through specialized processing. It contains various nutrients, including major elements like nitrogen, phosphorus, and potassium, as well as trace elements such as calcium, magnesium, and sulfur. These nutrients play crucial roles in plant growth. Below is a detailed explanation of the functions of the major elements in seaweed fertilizer:

1. Nitrogen (N): Nitrogen is one of the essential macronutrients for plant growth. In seaweed fertilizer, nitrogen primarily exists in the form of nitrates and ammonium salts. Nitrates serve as the primary nitrogen source absorbed by plant roots, promoting stem and leaf development. Ammonium salts are rapidly assimilated by plants, facilitating protein synthesis and enhancing stress resistance. Thus, appropriate application of nitrogen-rich seaweed fertilizer can accelerate plant growth and increase yield.

2. Phosphorus (P): Phosphorus is vital for cell division, elongation, and differentiation in plants. In seaweed fertilizer, phosphorus mainly appears as phosphates, which are easily absorbed by roots. Proper use of phosphorus-rich seaweed fertilizer fosters root development, strengthens disease resistance, and improves resilience to adverse conditions.

3. Potassium (K): Potassium is indispensable for maintaining water balance, regulating osmotic pressure, and enzyme activity within plants. Seaweed fertilizer provides potassium in the form of sulfates and chlorides. Adequate potassium-rich fertilizer promotes robust root systems, enhances cold and drought tolerance, and strengthens pest and disease resistance. Additionally, it boosts photosynthesis, leading to higher yields.

4. Calcium (Ca): Calcium is critical for cell wall formation and hormone synthesis. The calcium in seaweed fertilizer originates from calcium carbonate in seaweed. Suitable calcium-rich fertilizer encourages strong roots, improves lodging resistance, and strengthens pest defenses. It also aids flower bud differentiation and fruit quality.

5. Magnesium (Mg): Magnesium is essential for photosynthesis, respiration, and enzyme function. Derived from magnesium carbonate in seaweed, adequate magnesium in fertilizer supports root growth, stress tolerance, and pest resistance. it assists protein synthesis and disease resistance.

6. Sulfur (S): Sulfur plays key roles in photosynthesis, respiration, and enzyme activities. Sourced from sulfates in seaweed, sufficient sulfur in fertilizer promotes root development, stress resilience, and pest defense. It also contributes to protein synthesis and disease resistance.

the major elements in seaweed fertilizer significantly benefit plant growth. Rational application of nitrogen, phosphorus, and potassium-rich seaweed fertilizer can enhance growth, yield, stress resistance, and quality. excessive use may lead to soil salinization or acidification. controlled dosage is necessary to prevent negative impacts on soil health.