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Calcium Nitrate Fertilizer 15.5-0-0 (Ammonia Calcium Nitrate 15.5-0-0)

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$ 19.99
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$ 19.99
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$ 19.99
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Weight: 2 Pounds

Ammonium Sulfate Fertilizer

Calcium Nitrate Fertilizer 15.5-0-0 (Ammonia Calcium Nitrate 15.5-0-0)

Introducing our solution-grade Ammonium Calcium Nitrate Fertilizer 15.5-0-0, enriched with an additional 19% calcium content, meticulously formulated to meet the demanding needs of modern agriculture. Whether you're cultivating in soil or hydroponically, this innovative fertilizer offers an optimal balance of water-soluble nitrogen and calcium, ensuring robust plant growth and enhanced crop yield.

Our Calcium Ammonium Nitrate fertilizer is specifically designed for agriculture, especially in acid soils, thanks to its acidifying properties. It enhances photosynthesis, reduces soil acidity, and promotes the development of beneficial soil microorganisms, aiding in nitrogen fixation.

Features

  • Balanced Nutrient Composition: With a nitrogen content of 15.5%, our fertilizer fuels robust vegetative growth, fosters healthy leaf development, and bolsters overall plant vitality.
  • Enriched Calcium Content: Featuring an additional 19% calcium, our formula fortifies cell walls, enhances plant structure, and combats common ailments.
  • Phosphorus-Free Formula: Our fertilizer is thoughtfully formulated with a phosphorus content of 0%, making it ideal for environments where phosphorus runoff poses concerns.
  • Enhanced Nutrient Uptake: Calcium Nitrate enhances the absorption of potassium, magnesium, and calcium from the soil.
  • pH Regulation and Disease Prevention: The nitrate component increases soil pH and strengthens cell walls.
  • 100% Water Solubility: Engineered for maximum efficiency, our fertilizer dissolves completely in water.
  • Versatile Application: Suitable for various cultivation methods including soil, hydroponics, aeroponics, and foliar application.
  • High-Quality Assurance: Crafted with premium-grade ingredients and manufactured to the highest standards.

Derived From

Ammonium Calcium Nitrate Double Salt

Application Rate

Below are recommended rates for various applications. Simply mix into the topsoil or dilute in water as indicated, then water thoroughly after application.

Fruit Trees

Category Details
Application Rate 1 to 2 pounds per inch of trunk diameter
Frequency Early spring and late summer
Method Incorporate around tree's drip line

Small Gardens

Category Details
Application Rate 1 to 2 tablespoons per square foot
Frequency Every 4 to 6 weeks
Method Sprinkle and incorporate into soil

Hydroponics

Category Details
Application Rate 1 to 2 teaspoons per gallon
Frequency Every 1 to 2 weeks
Method Add to hydroponic reservoir

Foliar Application

Category Details
Application Rate 1 to 2 tablespoons per gallon
Coverage 100-200 sq.ft. or 5-10 trees
Frequency Every 7 to 14 days
Method Spray evenly on leaves

Grow with Confidence

Below are important details on quality, returns, sustainability, and charitable efforts that set our product apart.

Product Quality Guaranteed

  • All our products are manufactured in California, USA
  • Tested by independent third-party laboratories for quality assurance
  • Registered with the California Department of Food and Agriculture (CDFA)
  • Rigorously tested to ensure products are free from heavy metals

Hassle-Free Return Policy

If you're not completely satisfied, we offer a 90-day money-back guarantee. Simply return the unused portion in its original packaging, and we'll process a full refund.

Environmental Responsibility

We're committed to sustainable practices, including:

  • Biodegradable packaging
  • Precise nutrient formulation to reduce runoff
  • Support for eco-friendly farming methods

Charitable Contributions

1% of all profits go to our foundation, focused on improving educational opportunities for children.

Documents

FAQ

Click on each question to see the answer.

What is the best calcium nitrate fertilizer for tomatoes and how often should I apply it?

Calcium nitrate is ideal for tomatoes because it provides both readily available calcium and nitrogen, crucial elements for preventing blossom end rot and promoting healthy fruit development. For best results, purchase a high-quality calcium nitrate with 15.5% nitrogen and 19% calcium content. Apply as a foliar spray at a rate of 1-2 tablespoons per gallon of water every 7-10 days during flowering and fruit development stages. Alternatively, use granular calcium nitrate as a soil application at 3-4 pounds per 100 square feet, applied in 2-3 applications throughout the growing season. Professional growers prefer our premium greenhouse-grade water-soluble calcium nitrate for its superior purity and complete dissolution in irrigation systems, making it worth the additional investment for serious tomato producers.

Why is calcium nitrate fertilizer worth buying for preventing blossom end rot and increasing yields?

Calcium nitrate is worth the investment for serious growers because:

  • Proven effectiveness: NC State Extension research shows it reduces blossom end rot by 40-60% and increases marketable yields by 10-20%
  • Expert-recommended application: Purdue University suggests 5-10 pounds per 100 linear feet for tomatoes, especially in high-tunnel systems
  • Perfect timing matters: UC Davis recommends applying when fruits are walnut-sized for maximum prevention of calcium-related disorders
  • Superior to alternatives: Unlike limestone or gypsum, calcium nitrate provides immediately available calcium that plants can absorb even during moisture stress
  • Multiple benefits beyond prevention: Proper calcium levels from calcium nitrate result in:
    • Stronger cell walls
    • Better shipping quality
    • Extended shelf life
    • Higher quality marketable produce
  • Economic advantage: Particularly valuable for commercial and high-tunnel growers where the return on investment is substantial due to higher percentages of sellable produce

When is the best time to apply calcium nitrate fertilizer to prevent blossom end rot?

The timing of calcium nitrate application is critical for preventing blossom end rot. According to University of California Master Gardeners, the optimal time to apply calcium nitrate is when tomato fruits are walnut-sized, as this corresponds with the rapid cell division phase when calcium demand is highest. Start applications at the first sign of fruit development and continue every 1-2 weeks throughout the fruiting period.

For maximum effectiveness:

  • Early season: Apply calcium nitrate when plants are setting their first fruits
  • Critical periods: Increase application frequency during periods of rapid growth
  • Environmental triggers: Apply additional calcium nitrate after heavy rain or during drought stress, as these conditions inhibit calcium uptake
  • Preventative schedule: Don't wait for symptoms to appear - maintain regular applications on susceptible crops like tomatoes, peppers, and eggplants
  • Time of day: Apply in early morning for foliar sprays to ensure maximum absorption before intense sun, as recommended by Iowa State University Extension

Research from Alabama State confirms that consistent moisture and calcium availability during critical growth stages significantly outperforms reactive treatments after symptoms appear. University of Minnesota Extension further advises that applications should begin at the first sign of fruit development and continue at 1-2 week intervals throughout the growing season.

Discover More Garden Wisdom

Have Questions?

Check out our full FAQ or contact our support team for personalized advice.

Call us: (562) 351-5168 | Email: questions@greenwaybiotech.com

Customer Success Stories

"I used this fertilizer in my greenhouse, and the results were incredible! My tomato yields increased by almost 30% compared to last season." - Maria S., Commercial Grower

"My orchids have never looked better. After struggling for years with bloom production, this formula was exactly what they needed." - James T., Hobby Gardener

"We switched our entire hydroponic lettuce operation to this formula and saw faster growth cycles and better nutrient profiles in the final product." - GreenLeaf Farms

Customer Reviews

Based on 63 reviews
89%
(56)
3%
(2)
5%
(3)
0%
(0)
3%
(2)
R
Robert Findlay
bag spilt

Bag came in with a split in a seam. Sent in photos of split, pellets in box and spilling out of box into kitchen. Not a word back... guess greenway doesn't give a s**t

C
Charlie Bauerelen
Happy gardener

Very easy little goes long way

J
John Gjovik
Great product

First time using Calcium Nitrate in conjunction with 4-18-38 tomato fertilizer in my NFT system and all the varieties of micro dwarf tomatoes are loving it. Also used in raised beds and potted plants with great success. Will be buying more for sure.

C
Charles Snow
Very Powerful

I recommend only one application on Tomato plants when Blossoms start to appear. One application per season! One teaspoon mixed with two gallons on water.

G
Gary Hennessey
Effect of Calcium Nitrate

Explosive tomato/pepper plants. Used as a dissolved addition. Great way to provide calcium and nitrogen simultaneously while not destroying the bacteria in the soil. I use it on all veg garden plants.