Orchid doctor

CALCIUM BUILD-UP: On Leaves

Orchid Doctor

by Robert M. Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 2 years ago.

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It provides protection from hot sunshine in California. OD68-197
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Calcium Comments
CALCIUM CARBONATE (CACO3): Used in Mixes In paphiopedilum mixes it is used as an additive in various forms: chalk, limestone, marble, magnesium limestone, gypsum, coral, shells of molluscs, etc. A75-712 0
CALCIUM: Characteristics An essential element; removes certain organic acids; is part of cell wall construction. OA78-51 0
CALCIUM CHLORIDE, ANHYDROUS: Used for Storing Pollen and Seed Is sold by scientific supply houses; place a layer of it about 1/2 to three-quarters of an inch in the bottom of a Mason jar; cover with 1/2 inch layer of cotton before placing seed. A67-45 0
CALCIUM: Contributes to Drainage In the presence of calcium particles in the media flocculate or come together; in the presence of organic matter, aggregates are formed and drainage is thereby achieved. OD71-278 0
CALCIUM: Deficiency Black areas appear on cattleyas during hot weather but they are not likely caused by sunburn although the symptoms are similar; deficiency symptoms are most prevalent when cattleyas are in active growth and new leads are maturing; add a little lime to the top of the potting medium: a level teaspoon to a 6inch pot is ample. F83-54It causes young leaves to turn black at the tip, then spreads downward, preceded by ye1low "halo" or margin; apply lime to the top of the mix in the pot. AH86-101; F87-58 0
CALCIUM: Functions as Fertilizer Occurs in plants as calcium pectate; cements cells together; moves various compounds within the plant; enhances root development; is relatively immobile so a continuous supply is necessary. AU75-47 0
CALCIUM: Supplying a Necessary Element Calcium hydroxide is the most suitable source, at 50 to 200 ppm., or one gram of Hydrated lime to 10 litres of water, or 2.25 grams per 5 gallons of water; refer to AU84-97 0

New Topics

  1. William Schinella asked question I want to know how to name this plant in category General Discussion
  2. John Marmaro asked question Availability of a particular primary hybrid in category Cattleya Alliance
  3. Jerri campbell asked question Identify this plant. in category Cattleya Alliance
  4. Richard Whyte asked question unable to add orchid to my collection in category General Discussion
  5. Picture 1 Michael Pye asked question Labels in category OrchidWiz

New Comments

  1. Image Carol Holdren commented on topic "I want to know how to name this plant" by William Schinella
  2. 92f7c225 2490 4d3b 822c 2f4b8f30d6b8 Mary Lane commented on member plant Ons. Wildcat var. Golden Red Star by Mary Lane
  3. Image Carol Holdren commented on topic "Availability of a particular primary hybrid" by John Marmaro
  4. Image Carol Holdren commented on topic "Identify this plant. " by Jerri campbell
  5. Image Carol Holdren commented on member plant Den. chrysanthum var. ? no idea, or if this is a cross by Richard Whyte
  6. Richard Whyte commented on topic "unable to add orchid to my collection" by Richard Whyte
  7. 00100lportrait 00100 burst20190402193145369 cover Sally Guan commented on member plant Den. delicatum by Sally Guan
  8. Bio Alex Maximiano commented on topic "Labels" by Michael Pye
  9. Image Carol Holdren commented on member plant Phal. Yu Pin Easter Island var. 619 by Mary Lane
  10. 92f7c225 2490 4d3b 822c 2f4b8f30d6b8 Mary Lane commented on member plant Phal. OX Golden Apple ''Honeycrisp"' by William Gorski