Bowl display of Ihumate chelated calcium powder, showing white fine crystalline texture
Front view of Ihumate EDTA chelated calcium, Ca min 10%, fully water‑soluble micronutrient fertilizer
Ihumate EDTA‑Ca chelated calcium in various specifications, standard export packaging, supports OEM customization
Ruler comparison of Ihumate EDTA‑Ca packaging size and particle fineness
Bowl display of Ihumate chelated calcium powder, showing white fine crystalline texture
Front view of Ihumate EDTA chelated calcium, Ca min 10%, fully water‑soluble micronutrient fertilizer
Ihumate EDTA‑Ca chelated calcium in various specifications, standard export packaging, supports OEM customization
Ruler comparison of Ihumate EDTA‑Ca packaging size and particle fineness

EDTA Ca

  • Appearance: 200‑mesh white powder
  • EDTA Ca: 9.6%
  • pH: 6.96
Related Products
( Customer Reviews)

EDTA Ca

Highly Stable Chelated Calcium + Neutral to Slightly Alkaline Universal Adaptation: Cell Wall‑Strengthening Fast‑Acting Calcium Fertilizer

EDTA chelated calcium (Ca 9.6%, core advantage) features a ≥98% high chelation rate, neutral to slightly alkaline property at pH 6.96, and appears as a 200‑mesh white powder. Relying on its stable chelated structure, it achieves deep synergy of “highly stable calcium locking + wide adaptation + cell wall strengthening”, avoiding the drawbacks of ordinary calcium fertilizers such as easy soil fixation and poor mobility. It integrates multiple functions including fast calcium supplementation, deficiency correction, plant strengthening, and convenient compounding. Suitable for various crops, especially calcium‑sensitive ones, it is an ideal product for efficiently supplementing secondary nutrients, improving quality and reducing losses.

1. Mutual Synergy: Chelated Activity and Stable Efficiency Adopting high‑quality chelation technology to form a stable EDTA‑calcium complex, ensuring EDTA chelated calcium content reaches 9.6% and chelation rate ≥98%. Its chelated structure firmly locks calcium ions like a “grip”, preventing precipitation reactions with phosphate and other ions in soil. Calcium exists stably in an easily absorbable form and can be directly uptaken by crop roots without additional conversion, with absorption efficiency far exceeding inorganic calcium. The 200‑mesh white powder has fine particle size, excellent dispersibility, high water solubility, and disperses quickly in water or soil without caking. Adaptable to various application methods, it realizes dual synergy of “stable efficiency & activity locking + efficient absorption” to meet crops’ continuous calcium demand.

2. Wide Adaptation: Compatibility with Neutral to Slightly Alkaline Soils Product pH is stably maintained at 6.96, suitable for neutral to slightly alkaline soil environments (pH 5.5–8.5). It precisely matches the physicochemical properties of such soils, solving the industrial pain point of low calcium availability due to easy fixation. It ensures long‑term activity of calcium, which can flow with crop cell sap to fruits, new shoots and other calcium‑demanding parts. The 200‑mesh powder penetrates evenly into all soil layers and stably supplies calcium in neutral fields, orchards or slightly alkaline greenhouse substrates, optimizing soil calcium availability for diverse planting scenarios.

3. Fast Calcium Supplementation: Deficiency Correction and Plant Strengthening 9.6% EDTA chelated calcium is rapidly absorbed through roots and leaves to precisely supplement crop calcium requirements. As a key component of pectin in cell walls, calcium forms calcium pectate with pectic acid, strengthens cell wall strength and stability, promotes cellulose synthesis, and enhances cell mechanical stability. It quickly corrects calcium deficiency symptoms such as apical necrosis, blossom‑end rot, fruit cracking, and weak stems, improves lodging resistance and disease tolerance, delays plant senescence, and lays a solid foundation for high yield and quality.

4. High Compatibility: Convenient Compounding and Universal Adaptation The product has excellent compatibility and can be mixed with most water‑soluble fertilizers and pesticides without antagonism or precipitation. It requires no separate preparation and synergistically enhances overall fertilization and pesticidal effects to meet the convenience needs of large‑scale planting. Its neutral to slightly alkaline property at pH 6.96 fits most planting systems without pH adjustment, supporting foliar spray, drip irrigation and fertigation. It suits both large‑scale field farming and intensive fruit, vegetable and cash crop cultivation, satisfying calcium needs of diverse crops.

5. Quality Improvement & Efficiency Enhancement: Broad Adaptation and Cost Optimization Suitable for calcium‑demanding crops including fruits, vegetables and cash crops, especially calcium‑sensitive ones such as tomato, pepper, cabbage and apple. It prevents calcium deficiency, increases fruit firmness, reduces cracking and decay, improves marketability, strengthens stem toughness and boosts yield. The 200‑mesh white powder allows accurate weighing, easy storage and transport with no caking. Combined with high chelation rate, it achieves “low dosage, high efficiency”, reduces calcium waste, significantly improves fertilizer use efficiency, and balances calcium supply and planting cost control.

Expert Advice: Especially suitable for neutral to slightly alkaline soils and calcium deficiency scenarios in various crops, particularly calcium‑prone fruits and vegetables like tomato and pepper. Can be applied alone or mixed with conventional fertilizers via foliar spray, drip irrigation or fertigation. The 200‑mesh powder dissolves completely without clogging pipes. Optimal spraying period is from fruit setting to swelling stage; recommended concentration is 0.2%, applied every 10–15 days for 2–3 consecutive times. Avoid calcium application under soil drought to improve absorption, enabling precise calcium supply, quality improvement and loss prevention.

EDTA Ca Specifications

Technical ParametersDetailed SpecsTesting MethodsReference Standards
Appearance200‑mesh white powder--
EDTA Ca9.6%Atomic Absorption SpectrophotometryNY/T 1973
pH6.96Potentiometric MethodNY/T 1973‑2010

EDTA‑Ca - Introduction Video

  • 200‑mesh fine powder
  • Chelated form
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COA, TDS, MSDS & HM Test Reports

Certificate of Analysis (COA)

Certificate of Analysis: EDTA Ca

Heavy Metal Test Report

Heavy Metal Test Report: EDTA Ca

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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

What is the core difference between EDTA chelated calcium and common inorganic calcium fertilizers (e.g. calcium nitrate)?

Common inorganic calcium fertilizers are easily fixed in soil with only 20%–30% utilization rate, and tend to antagonize phosphorus to form precipitates, with weakened efficacy in both acidic and alkaline soils. EDTA chelated calcium has a stable structure with over 70% utilization rate. Near‑neutral pH 6.96 adapts to all soil types. The 200‑mesh ultrafine powder dissolves uniformly, can be directly absorbed by crops, quickly relieves calcium deficiency, and features strong compatibility with most fertilizers without antagonism concerns.
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: EDTA Ca

Application Guide: Suitable for foliar spray, drip irrigation and fertigation. Can be compounded with non‑strongly alkaline pesticides and fertilizers. Strictly avoid mixing with high‑concentration phosphate fertilizers. Calcium‑boron co‑supplementation is recommended to improve absorption. Foliar spray: dilute 800–1500 times, 1200–1500 times at seedling stage, apply before 10 AM or after 4 PM on sunny days, focus on fruits and leaf backs, spray 2–3 times at 7–10‑day intervals. Drip irrigation/fertigation: dilute 500–800 times, apply evenly with irrigation water, use within 8 hours after dissolution. Optimal application periods: 20 days after petal fall, fruit swelling stage and 20 days before harvest for fruit trees.

Fertilizer Manufacturing & Blending

  • Granular Fertilizer:
    200‑mesh white ultrafine powder can be evenly mixed into granular compound fertilizers and organic fertilizers to supplement core calcium nutrient, solving uneven calcium supply and easy soil fixation issues of granular fertilizers, suitable for large‑scale fertilizer production.
  • Liquid Fertilizer:
    Excellent water solubility and stability, disperses and dissolves rapidly in water with no precipitation. A core raw material for high‑end trace element liquid fertilizers and special fruit‑vegetable foliar fertilizers, promoting balanced fertilizer nutrition.
  • Compound Trace Element Fertilizer:
    Can be compounded with EDTA boron, EDTA zinc etc. to build a “calcium‑boron synergistic” nutrition system, avoid element antagonism, enhance comprehensive effects of anti‑cracking and fruit setting, suitable for diverse fertilization needs.

Drip Irrigation & Spraying

  • Drip Irrigation System:
    200‑mesh ultrafine powder dissolves completely with no residue, does not clog drip pipes and filters. Calcium ions reach root zones directly with water, suitable for large‑scale drip irrigation in fields, greenhouses and orchards to achieve precise root calcium supplementation.
  • Spraying:
    Diluted solution has high uniformity, can be applied manually or by drone, rapidly absorbed by leaves and fruits, targeted to relieve physiological diseases caused by calcium deficiency, suitable for emergency fertilization and routine care at key growth stages of various fruits and vegetables.

Application Ratio Scheme

Crop NameGrowth StageApplication Ratio
RiceTillering Stage3.0-4.0 kg/ha
Jointing Stage4.0-5.0 kg/ha
Heading Stage4.5-6.0 kg/ha
Wheat/BarleyJointing Stage4.0-5.0 kg/ha
Heading Stage4.5-6.0 kg/ha
CornGrand Growth Stage5.0-6.0 kg/ha
SoybeanFlowering & Podding Stage4.5-5.5 kg/ha
Citrus/Orange20 Days After Petal Fall6.0-8.0 kg/ha
Fruit Swelling Stage8.0-10.0 kg/ha
20 Days Before Harvest6.0-8.0 kg/ha
Apple/PearYoung Fruit Swelling Stage7.0-9.0 kg/ha
GrapePre‑flowering & Fruit Swelling Stage6.0-8.0 kg/ha
Tomato/PepperInitial Flowering Stage4.0-5.0 kg/ha
Fruit Swelling Stage5.0-7.0 kg/ha
StrawberryFlowering & Fruiting Stage3.0-4.0 kg/ha
Cucumber/MelonAfter Fruit Setting4.0-6.0 kg/ha
Leafy VegetablesRapid Growth Stage2.5-3.5 kg/ha
CottonBoll Forming Stage5.0-7.0 kg/ha
TobaccoVigorous Growth Stage4.5-6.0 kg/ha

Product Advantages: EDTA Ca

Stable chelated calcium, strengthens cell walls and improves quality: Centered on 9.6% high‑content EDTA calcium with mild pH 6.96 formula, adapts to all soils and supplies calcium throughout growth period, balancing stress resistance, anti‑cracking and fruit quality optimization.

1

Highly Stable & Efficient Calcium Nutrient Source

EDTA calcium content accurately reaches 9.6%, stable chelated structure, long‑lasting calcium ion activity, utilization rate far exceeds inorganic calcium fertilizers such as calcium nitrate and calcium chloride. Breaks through soil fixation, enables precise fertilization at critical calcium‑demanding stages, and prevents nutrient loss.

2

Near‑neutral Property for Wide Adaptation

Aqueous solution pH stably at 6.96 (near neutral), does not alter soil acid‑base balance. 200‑mesh ultrafine powder dissolves uniformly, gently protects roots and fruit skins, suitable for acidic, alkaline and other soils and all crop growth stages.

3

Strengthens Walls, Prevents Cracking, Improves Quality & Yield

Calcium ions rapidly participate in calcium pectate synthesis in cell walls, increase cell wall toughness, effectively prevent physiological diseases such as fruit cracking, blossom‑end rot and bitter pit, improve fruit storage tolerance, color and flavor, and significantly increase commodity rate.

4

Dual Benefits of Stress Resistance & Yield Promotion

Participates in crop signal transduction and cell stability regulation, enhances crop resistance to drought, low temperature, diseases and pests; promotes flower bud differentiation and fruit setting, reduces flower and fruit drop, ensuring high and stable yield.

5

Safe, Compatible & Easy to Operate

Chemically stable with no risk of root, leaf or fruit burn. Can be compounded with most pesticides and fertilizers (avoid strong phosphates). 200‑mesh powder mixes and dissolves easily, suitable for various application methods. Co‑supplementation with boron improves absorption efficiency.

6

Green & Compliant with No Residue

Controlled nutrient release with no excess residue, complies with GB/T 15452‑2009 testing standard, causes no soil pollution, meets quality requirements of green agriculture and large‑scale planting.

Certifications: EDTA Ca

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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