
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.
| Technical Parameters | Detailed Specs | Testing Methods | Reference Standards |
|---|---|---|---|
| Appearance | 200‑mesh white powder | - | - |
| EDTA Ca | 9.6% | Atomic Absorption Spectrophotometry | NY/T 1973 |
| pH | 6.96 | Potentiometric Method | NY/T 1973‑2010 |
Certificate of Analysis: EDTA Ca
TDS: EDTA Ca
MSDS: EDTA Ca
Heavy Metal Test Report: EDTA Ca
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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.
| Crop Name | Growth Stage | Application Ratio |
|---|---|---|
| Rice | Tillering Stage | 3.0-4.0 kg/ha |
| Jointing Stage | 4.0-5.0 kg/ha | |
| Heading Stage | 4.5-6.0 kg/ha | |
| Wheat/Barley | Jointing Stage | 4.0-5.0 kg/ha |
| Heading Stage | 4.5-6.0 kg/ha | |
| Corn | Grand Growth Stage | 5.0-6.0 kg/ha |
| Soybean | Flowering & Podding Stage | 4.5-5.5 kg/ha |
| Citrus/Orange | 20 Days After Petal Fall | 6.0-8.0 kg/ha |
| Fruit Swelling Stage | 8.0-10.0 kg/ha | |
| 20 Days Before Harvest | 6.0-8.0 kg/ha | |
| Apple/Pear | Young Fruit Swelling Stage | 7.0-9.0 kg/ha |
| Grape | Pre‑flowering & Fruit Swelling Stage | 6.0-8.0 kg/ha |
| Tomato/Pepper | Initial Flowering Stage | 4.0-5.0 kg/ha |
| Fruit Swelling Stage | 5.0-7.0 kg/ha | |
| Strawberry | Flowering & Fruiting Stage | 3.0-4.0 kg/ha |
| Cucumber/Melon | After Fruit Setting | 4.0-6.0 kg/ha |
| Leafy Vegetables | Rapid Growth Stage | 2.5-3.5 kg/ha |
| Cotton | Boll Forming Stage | 5.0-7.0 kg/ha |
| Tobacco | Vigorous Growth Stage | 4.5-6.0 kg/ha |
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.
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.
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.
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.
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.
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.
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.
Ihumate is backed by globally recognized certifications.
