Verde-Cal

Verde-Cal is a calcitic limestone combined with thCa™, an organic complexing agent, converts insoluble calcium compounds to soluble and available calcium. This allows for greater delivery of calcium to the exchange sites on the soil colloid. Verde-Cal contains Aqua-Aid penetrant which synergizes with thCa™, providing uniform nutrient movement into the entire soil profile.

Product Details

  • Reduces hydrogen, sodium and chlorine in the plant and soil
  • Improves germination, stimulates root growth, and enhances micorbial activity
  • Increases essential nutrient absorption and translocation
  • Improves soil structure (flocculation, water infiltration)
  • Supplies optimal calcium levels to plant cells to strengthen the plant’s resistance to disease
  • Balances the Ca/N ratio in the plant
  • Quicker response at lower rates
  • Requires 1/4 the rate of standard lime per application

Application Rates

To maintain optimum pH and growing conditions, apply Verde-Cal at 250 kg/Ha at least twice per growing season or as needed. Soil test recommendations should be used to determine liming needs.
To adjust pH, apply Verde-Cal at 500 kg/Ha. In most soils this will raise the soil pH up to one full point. Retest and if needed, reapply at the pH adjustment rate. To maintain optimum pH and growing conditions, apply Verde-Cal at least twice per growing season or as needed.

Verde-Cal PDFs

Download the following PDFs to learn about Verde-Cal:
Product LiteratureProduct LabelSafety Sheet

Specialty fertilisers

In the product category Specialty Fertiliser, Aqua Aid Europe offers two other calcium products. Verde-Cal G is a limestone product based on calciumcarbonate. Verde-Cal F is a calciumsulfate better known as gypsum.

How does it work?

The soil colloid has degrees of affinity for various basic cations. This bonding increases with larger atomic weight, ion size and amount of charge. The percentage saturation for each of the cations will usually be within the following ranges for optimum performance.

The process of cationic exchange begins when water and basic cations (Ca, Mg, K, Na) meet the soil colloid. Based on the soil colloid’s degree of cation affinity, Calcium (Ca) will attach to the soil colloid releasing the smaller cations. The released cations (Mg++, Na+, K+, H+) are solubilized in the soil solution and made available to the plant or removed from the soil profile. As hydrogen is released from the soil colloid into the soil solution, acidity is reduced and pH is raised.

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