Calcium

Calcium (Ca) is an essential part of plant cell wall structure.  It is essential for good growth, and is known to contribute to improved disease resistance.  Calcium also improves the absorption of other nutrients

role in growth

  • Absorbed by plants in the ionic form (Ca2+)

  • Classified as a “secondary macro-mineral” because it is needed in relatively large quantities, but deficiency of this nutrient are less frequent when compared to N, P, and K (primary nutrients)

  • A “structural nutrient” that is necessary for the formation of calcium pectate which produces robust plant cell walls

  • Deficiency symptoms are generally observed in young tissue growth due to the fact that Ca is an immobile nutrient

  • Deficiency symptoms include loss of plant structural rigidity, stunted growth, and newly formed leaves may crinkle or cup

  • It is essential to know the quality of your water if you are not using a filtration system as many sources may have significant concentrations of dissolved calcium

  • Significant sources of this nutrient include gypsum, superphosphate, and dolomitic lime (dolomitic lime should only be used in large quantities to correct highly acidic conditions)

 

Deficiency

Advanced Calcium Deficiency. Photo by CHA

Advanced Calcium Deficiency. Photo by CHA

Calcium Deficiency. Photo by CHA

Calcium Deficiency. Photo by CHA

Calcium Deficiency. Photo by CHA

Calcium Deficiency. Photo by CHA

Premier Tech Horticulture specialist Troy Buechel talks about the role of calcium (function, deficiency, and toxicity) in plant culture. You could also read his article on our website: http://www.pthorticulture.com/en/training-center/role-of-calcium-in-plant-culture/ Calcium (Ca) is one of the three secondary nutrients, along with magnesium (Mg) and sulfur (S), that is required by plants for healthy growth.

Sources of Calcium

Bonemeal

Bonemeal

Gypsum

Gypsum

Limestone

Limestone