Ihumate ZINC SEAWEED liquid fertilizer promotional image, showing core advantages of alginic acid and chelated zinc
Front view of Ihumate ZINC SEAWEED liquid fertilizer bottle, biostimulant liquid fertilizer for drip irrigation and spraying
Laboratory flask showing Ihumate ZINC SEAWEED liquid fertilizer, dark brown transparent liquid
Ihumate ZINC SEAWEED liquid fertilizer packaging details, supports OEM labeling for global organic agricultural markets
Ihumate ZINC SEAWEED liquid fertilizer promotional image, showing core advantages of alginic acid and chelated zinc
Front view of Ihumate ZINC SEAWEED liquid fertilizer bottle, biostimulant liquid fertilizer for drip irrigation and spraying
Laboratory flask showing Ihumate ZINC SEAWEED liquid fertilizer, dark brown transparent liquid
Ihumate ZINC SEAWEED liquid fertilizer packaging details, supports OEM labeling for global organic agricultural markets

Zinc Seaweed

  • Density: 1：1.37
  • Zinc: > 17%
  • Seaweed Extract: > 2%
Related Products
( Customer Reviews)

Zinc Seaweed (ZINC SEAWEED)

High-Concentration Zinc + Seaweed Extract: Activate the “Energy Engine” of Plant Growth

This product is a high-efficiency synergistic liquid fertilizer with a density as high as 1:1.37, deeply integrating high-content zinc (>17%) and natural seaweed extract (>2%). This combination is not just nutrient supplementation — it boosts the crop’s endogenous power through biostimulation:

1. Rapid Zinc Supplementation: Activates enzymatic reactions. With a zinc content of up to 17%, it quickly corrects physiological diseases caused by zinc deficiency in crops, such as “little leaf disease”, leaf chlorosis and stunted growth, effectively participates in auxin synthesis, and significantly improves photosynthetic efficiency.

2. Seaweed Synergy: Enhances absorption efficiency. Containing more than 2% seaweed extract as a natural biostimulant, it increases cell membrane permeability, allowing zinc ions to more easily penetrate the leaf waxy layer, greatly improving zinc absorption and utilization, and ensuring nutrients reach growth points accurately.

3. Physical Stability: Clear and non-clogging. The high-density formula at 1:1.37 ensures a highly uniform liquid with no precipitation. It maintains excellent physical stability in both spray systems and drip irrigation equipment, does not clog nozzles, and is suitable for modern large-scale operations.

4. Stress Resistance Enhancement: Boosts immune response. Seaweed extract is rich in natural stress-resistant factors, which activate the crop’s own immune system, enhance resistance to drought, low temperature and diseases, and provide all-round protection during the seedling and flower bud differentiation stages.

5. Quality Improvement and Yield Increase: Optimizes fruit quality. Zinc promotes flower bud differentiation and fruit development. Combined with active substances from alginic acid, it produces uniform-sized, bright-colored fruits, extends post-harvest shelf life, and significantly improves the commercial value of crops.

Expert Recommendation: Suitable for fruit trees, vegetables, cereals and various cash crops. Recommended for use at the seedling stage, pre-flowering stage and fruit swelling stage; foliar spray or irrigation application delivers excellent results.

Zinc Seaweed Specifications

Technical ParametersDetailed SpecsTesting MethodsReference Standards
Density1：1.37Hydrometer Method / Volumetric Flask Weighing MethodNY/T 1973
Zinc> 17%Atomic Absorption SpectrophotometryNY/T 1973
Seaweed Extract> 2%SpectrophotometryNY/T 2117-2012

ZINC SEAWEED - Introduction Video

  • Good fluidity
  • Strong compatibility
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COA, TDS, MSDS & HM Test Reports

Certificate of Analysis (COA)

Certificate of Analysis: Zinc Seaweed

Technical Data Sheet (TDS)

TDS: Zinc Seaweed

Safety Data Sheet (MSDS)

MSDS: Zinc Seaweed

Heavy Metal Test Report

Heavy Metal Test Report: Zinc Seaweed

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Need custom documents or specific test results?

Frequently Asked Questions

Ihumate FAQ: Sourcing, organic certification, logistics, and customization.
Apply for Ihumate Free Samples: Global shipping for lab compliance testing.
1

Why add seaweed extract to zinc fertilizer?

Seaweed extract acts as a natural chelating and synergistic agent. It not only promotes active absorption of zinc ions by plants to prevent zinc from being fixed in soil or on leaf surfaces, but also relieves crop stress through its natural active substances, making zinc supplementation more long-lasting and comprehensive than ordinary zinc fertilizers.
2

Are you a trading company or a manufacturer?

We are a professional manufacturing enterprise. Our modern factory is located in Huozhou, Linfen, Shanxi, China. With an annual capacity of 500,000 tons, we invite global partners to visit our facility.
3

How do you perform quality control?

4

Do you provide samples?

5

What are the payment terms?

6

How can I track my shipment after payment?

7

What is the Minimum Order Quantity (MOQ)?

8

Can you customize packaging or print our logo?

9

How long is the delivery time?

More questions about our products?

Application & Dosage: Zinc Seaweed

Application Instructions: Suitable for foliar spray and drip irrigation. Foliar spray: Dilute 800–1200 times, 1500 times for seedling stage. Spray evenly on both sides of leaves, avoid high temperature and strong light (best in early morning or evening). Re-spray if rain occurs within 4 hours after application. Drip irrigation: Dilute 1000–1500 times and apply evenly with irrigation water at 1.0–2.0 L per mu. Shake well before use. With its nutrient-rich density of 1.37, it ensures zinc and seaweed active ingredients reach root systems accurately. Do not mix with high-phosphorus fertilizers or strong alkaline pesticides.

Fertilizer Manufacturing & Blending

  • Liquid Fertilizer Compounding:
    With >17% high-concentration zinc and >2% seaweed extract, it can be used as a core raw material to formulate high-end foliar fertilizers and biostimulant liquid fertilizers, improving zinc supplementation and stress resistance of finished products. Suitable for large-scale fertilizer production, compatible with most amino acid and potash raw materials without antagonism.
  • Custom Fertilizer Formulation:
    Can be compounded with boron fertilizer, calcium fertilizer, etc., according to crop nutrient requirements to create special nutrient supplements for fruits and vegetables, targeting physiological diseases caused by zinc deficiency and meeting precise fertilization needs of different crops.
  • Fertilizer for Water-Fertigator Integration:
    Uniform fluid property with density 1.37 allows adjustable dilution ratio, suitable for water-fertilizer integration systems in greenhouses and fields, realizing precise zinc supplementation, biostimulation and efficient irrigation simultaneously, reducing labor input.

Drip Irrigation & Hydroponics

  • Drip Irrigation System:
    100% water-soluble with no residue, does not clog drip pipes and filters. Weak acid-base property does not damage soil balance, suitable for large-scale orchards, vegetable gardens and farmland drip irrigation, especially for zinc supplementation in saline-alkali and acidic soils.
  • Spraying Operations:
    Seaweed extract enhances solution adhesion and droplet uniformity, suitable for manual and drone spraying. Application during flower bud differentiation and early flowering quickly supplements zinc and active substances, supporting emergency zinc supply and routine growth regulation.

Application Ratio Scheme

Crop NameGrowth StageApplication Ratio
RiceTillering Stage2.0-3.0 L/ha
Booting Stage3.0-4.0 L/ha
Filling Stage2.5-3.5 L/ha
Wheat/BarleyJointing & Booting Stage2.5-3.5 L/ha
CornSeedling Stage1.5-2.0 L/ha
Grand Growth Stage3.0-4.0 L/ha
CottonSeedling Stage1.8-2.5 L/ha
Citrus/OrangeSpring Shoot Stage3.5-4.5 L/ha
Fruit Swelling Stage4.0-5.0 L/ha
Apple/PearFruit Swelling Stage3.5-4.5 L/ha
GrapeNew Shoot Growth Stage3.0-4.0 L/ha
Post-Flowering Fruit Swelling Stage3.5-4.5 L/ha
BananaVegetative Growth Stage4.5-5.5 L/ha
Tomato/PepperSeedling Stage1.5-2.0 L/ha
Fruit Setting Stage3.0-4.0 L/ha
StrawberryTransplant Reviving Stage1.2-1.8 L/ha
Flowering Stage2.0-3.0 L/ha
Cucumber/LuffaSeedling Stage1.5-2.0 L/ha
Peak Fruiting Stage3.0-4.0 L/ha
PotatoTuber Formation Stage2.5-3.5 L/ha
PeanutFlowering & Pegging Stage3.0-4.0 L/ha

Product Advantages: Zinc Seaweed

Seaweed-chelated, high-concentration zinc supplementation: With >17% zinc as the core, plus >2% seaweed extract and nutrient-dense density 1.37, it integrates precise nutrient supply, stress resistance, quality improvement and efficient absorption.

1

Precise Supply of High-Concentration Chelated Zinc

Zinc content >17%, using chelated zinc source with density 1.37 fluid system to avoid soil fixation. Rapidly relieves little leaf disease, chlorosis caused by zinc deficiency, and accurately meets zinc demand in all growth stages.

2

Seaweed Synergistic Enhancement

Seaweed extract content >2%, rich in alginic acid, mannitol and other active substances, building zinc-friendly channels to promote zinc absorption while regulating crop growth rhythm, achieving dual effects of “zinc supplementation + conditioning”.

3

High Absorption and Utilization Efficiency

Chelation technology combined with surface activity of alginic acid makes zinc absorption rate over 85%, far exceeding traditional single zinc fertilizers and reducing nutrient waste.

4

Enhanced Stress Resistance, Quality & Yield

Zinc activates crop metabolic enzymes, seaweed actives enhance stress resistance. Together they improve fruit sugar, color and firmness, reduce deformed fruits, and increase yield and marketable rate.

5

Adaptable to Diverse Planting Scenarios

Weak acid-base property, can be mixed with most pesticides and fertilizers (avoid high phosphorus, strong alkali). Suitable for field, greenhouse, compatible with manual, drone and water-fertilizer integration application.

6

Mild, Safe & No Phytotoxicity

Compound of natural seaweed raw materials and chelated zinc, non-toxic to crops, humans and animals, environmentally friendly. Suitable for green and organic planting; quickly revives weak and diseased plants.

Certifications: Zinc Seaweed

Ihumate is backed by globally recognized certifications.

  • 🏅 OMRI Listed – Approved for organic use (USDA/NOP standards)
  • 🏅 CERES Certified – High-standard organic inputs for sustainable agriculture
  • ✔ Excellent international production process with full batch traceability
  • ✔ Meeting the strict demands of global distributors and formulators
Ihumate OMRI certificate proving compliance with USDA/NOP organic standards.
Ihumate Potassium Humate CERES organic certificate for EU and NOP standards.
Ihumate Potassium Fulvate CERES organic certificate ensuring global export quality.
Ihumate Mineral Humic Acid CERES organic certificate for high-end agriculture.
Ihumate Mineral Fulvic Acid CERES organic certificate for EU and NOP compliance.
Ihumate Sodium Humate CERES certificate for aquaculture, feed, and industrial use.
Ihumate Seaweed Extract CERES organic certificate, rich in natural hormones.

Ihumate Global Exhibition Videos

We showcase our Humic Acid, Seaweed, Liquid Fertilizer, and Bio-control series globally.
Join us at our 2026 exhibitions:
Event: Shanghai CAC (Fshow)
Booth: 12G05
Date: March 17-19, 2026
Address: No. 333 Songze Avenue, Qingpu District, Shanghai
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