Plant Nutrition

Calcium Nutrient Info

Calcium - Quick Facts

  • Calcium is essential for cell wall structure and plant strength.
  • Calcium is utilized for continuous cell division and formation.
  • Calcium promotes uptake and transportation of other nutrients.
  • Uptake of Calcium is primarily through the new root hairs and the root tip
  • Nitrogen-use efficiency of urea-containing fertilizers is increased with soluble calcium sources such as calcium nitrate
  • Form used by plants: Ca+2


Calcium - Role of Nutrient

  • Promotes stalk strength and standability.
  • Stimulates root and leaf development.
  • Improves disease resistance.
  • Important in cell wall and membrane construction.
  • Plays a vital role in Nitrogen metabolism.
  • Critical for receptiveness of pollen and proper pollen tube development.


Calcium - Nutrient in Soil

  • Most of the Calcium is absorbed in the new softer tissue root areas.
  • Overfertilized plots (excess Mg or K in soil) make it more difficult for roots to take up Ca; too much N stimulates vegetative growth which will take Ca away from fruit.
  • Areas with B deficiencies may reduce calcium movement.

Calcium - Deficiency Symptons

  • Leaf margins irregular and foliage reflect spotted or chlorotic areas
  • Deficiency visible in the storage tissues of fruit causes cells to collapse
  • Failure of terminal growth and apical root tip development
  • Distortion and reduced size of youngest leaves
  • Due to the general immobility of Ca, the parts of the plants with low transpiration capacity, such as young leaves, flowers and fruits are affected mostly by Ca deficiency.

Calcium - Factors Affecting Deficiency

  • In higher pH soils, Calcium forms a number of insoluble bonds rendering the Calcium fraction unavailable for plant use (ie. Calcium Carbonate).
  • Higher levels of Nitrogen can reduce the availability of Calcium.
  • Presence of competing ions can also affect deficiency - calcium competes with other positively charged ions, such as sodium (Na+), potassium (K+), and magnesium (Mg+2), and applying too much of these positively charged ions might decrease calcium uptake by plants.
  • High humidity

R3 Agronomic Platform

R3 Lifecycle: Roots > Reproduce > Ripen

Roots – The vegetative stage looks to develop vigorous, healthy roots to maximize nutrient acquisition from the soil. The end result is a healthy root rhizosphere.

Reproduce – Supply the essential nutrients at reproduction to help the plant maximize pollen viability, flowering, pollination, seed set and fruit development.

Ripen – Late season nutrition is vital to optimize the nutrient density and quality of the crop.

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