Strong cell walls shield your crops, ensuring healthier growth and longer shelf life. The Haifa Cal™ range let you pick the precise calcium solutions and formulas to maximize your crop’s strength and health.
Calcium is a “quality nutrient” that enhances yield quality and prolongs shelf life. As calcium is not mobile in plant nor in soil, it must be supplied throughout the growth season to keep adequate levels in the plant tissues and to ensure proper development.
Haifa Cal™ range of calcium solutions offers ideal source of plant-available calcium for all crops and cultivation methods. Haifa Cal™ products are ideal for highly-efficient applications by Nutrigation™ (fertigation) and foliar sprays.
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| Pure plant nutrition | | Free of sodium
and chloride | | Wide range
of products | | Assured quality |
Discover Haifa's complete portfolio of Water-Soluble Fertilizers
Calcium in the plant
Calcium is essential for the building of cell walls. An insufficient calcium supply disrupts this function, particularly affecting young and actively growing tissues such as fruit, leaves, and root tips, resulting in significant yield losses and quality deterioration. Moreover, calcium-deficient cells tend to be structurally weaker and more prone to biotic stress, including pathogen attacks.
Beyond its structural role, calcium is involved in various physiological processes. It participates in enzymatic activities and plays a key role in the coordination of intercellular signalling.
Calcium mobility within the plant is inherently limited. As it is transported exclusively through the xylem, its movement relies heavily on transpiration-driven water flow. This presents a challenge under environmental conditions—such as high humidity or extreme heat—that reduce transpiration and, consequently, the transport of calcium from roots to the upper plant tissues.
Additionally, calcium cannot be redirected through the phloem to developing sink organs like young fruits, which require high nutrient input during rapid growth phases. This characteristic makes calcium deficiencies particularly difficult to correct once symptoms appear.
Given its critical physiological functions and restricted mobility, calcium fertilization must be carefully managed throughout the growing season to ensure continuous availability.
Typical symptoms of calcium deficiency
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| Blossom End Rot (BER) | | Leaf tip burn | | Leaf deformation | | Fruit creasing |
Blossom End Rot
A notable example of calcium deficiency is Blossom End Rot (BER), a physiological disorder commonly seen in tomatoes and peppers. It typically manifests as a dark, sunken lesion at the blossom end of the fruit. BER is closely linked to calcium deficiency and is often triggered by conditions that disrupt water uptake, such as heat waves, irregular irrigation, or elevated humidity. Consistent management of both calcium nutrition and irrigation is key to minimizing the occurrence of BER and safeguarding crop quality and yield.
Learn more about Blossom End Rot and the ways to prevent it.
Haifa Cal™ products
The Haifa Cal™ range includes high-quality, greenhouse-grade calcium fertilizers formulated to ensure efficient calcium supply along with maximum convenience and flexibility in application.
Haifa Cal™ range of calcium solutions offers ideal source of plant-available calcium for all crops and cultivation methods. All Haifa Cal™ products contain 100% pure plant nutrients and offer high solubility.
 | Haifa Cal™ GG
Greenhouse-grade calcium nitrate Haifa Cal™ GG contains nitrogen in the form of nitrate (NO3-), which enriches plant nutrition and improves the efficiency of calcium uptake. |
 | Haifa Cal™ Absolute
Pure, nitrogen-free calcium fertilizer Delivering calcium with no nitrogen at all, Haifa Cal™ Absolute provides perfect control over calcium fertilization—without adding unnecessary elements to the nutrient solution. It is the product of choice when calcium is needed and nitrogen should be limited, such as during the fruit ripening stage. |
 | Haifa Soluble™ DUO
Calcium and Potassium Nitrate Formulas Haifa Soluble™ DUO formulas are highly concentrated, delivering readily available potassium and calcium to efficiently meet the plant’s nutritional demands. Providing ammonium-free nutrition, Haifa Soluble™ DUO is ideally suited for the stages of fruit development. Its low nitrogen-to-calcium ratio supports optimal calcium management, especially when nitrogen input needs to be limited. |
 | Haifa Cal™ Mag
Calcium & Magnesium Nitrate Haifa Cal™ Mag offers a balanced combination of two secondary nutrients, along with nitrate-nitrogen that enriches plant nutrition and facilitates the uptake of essential cations. |
 | Haifa Cal™ Agri
Calcium Nitrate for open field applications Haifa Cal™ Agri is a granular fertilizer for direct soil application, suitable for base and side dressing of field crops and fruit trees. |
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