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 almost 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
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  1. John Appelbaum commented on member plant Blc. Hausermann's Charm by John Appelbaum
  2. Dsc 0747 Kathleen Kust commented on topic "Ellison Onizuka" by Raina Steiner
  3. Paph hsinying jewel x paph hsying jewel september 09 2018 Adrienne Alexander commented on topic "How to add a not-listed plant" by Adrienne Alexander
  4. Image Carol Holdren commented on member plant Rly. Raspberry Lemonade by Paul Keller
  5. Wbf4kvs Sys Admin commented on topic "Any idea of this Cattleya?" by Juan Martin Cabrejos
  6. Wbf4kvs Sys Admin commented on topic "Phalaenopsis Hope Star" by Karl Olsen
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