TRACE ELEMENTS: Requirements by Plants

Culture Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 8 years ago.

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Very small amounts are necessary for leaves kept in good health; ten parts per million of water, or about one tablespoon per 300 gals, water is the average; enough of them occur in tap water or in fertilizer impurities or in well water. OD70-275
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Trace Elements Comments
TRACE ELEMENTS: Added Fish fertilizer or seaweed can furnish them and can be applied in addition to a regular fertilizer. OIE86JY-10 0
TRACE ELEMENTS: Added to a 20-20-20 Fertilizer They are not necessary as special additives; minor elements probably are present in the fertilizer itself, or in the water supply or in the tree-fern medium being used. A67-1010 0
TRACE ELEMENTS: Boron, Copper, Iron, Manganese and Zinc They need a slightly acid reaction in the compost for assimilation by the plants; copper and zinc are available in alkali; they readily chelate, which happens when an organic molecule envelops them; refer to OA78-51; this is not true and should be omitted. OWD 0
TRACE ELEMENTS: Contained in Fertilizers Survey of nutrient elements contained In commercial fertilizers such as Peters; Plantfood; with a table for 13 elements in MMOL per litre (actual nutrient content).OA97-201 0
TRACE ELEMENTS: Make Your Own Formula Stock solution: 1 litre of water; Boric acid (H3BO3) -- 0.143 grams; Potassium Iodide (KI) -- 0.2g; Molybdenum Trioxide (MoO3) -- 0.10g (or, Molybdic Acid -- 0.11g); Copper sulphate (CuSO4.5H2O; -- 0.25g; Zinc Sulphate (ZnSO4.7H2O) -- 0.14g; Manganous Sulphate (MnSO4H3)- o.75g; and if the fertilizer used contains no chlorine, add Potassium Chloride (KC1) -- 2.0g. AU84-100 0
TRACE ELEMENTS: Treatment Once a month use Sequestrene 330Fe (Iron Chelate Micronutrient) at 1/4 tpg., twice in summer apply at the same strength Peters' S.T.E.M. (Soluble Trace Element Mix) at the same strength; apply Epsom Salts fortnightly at 1 ttpg. to promote green foliage. OD87-36 0
TRACE ELEMENTS: Usually a Good Balanced Fertilizer Contains Them The major trace elements are calcium, sulphur, and magnesium; the minor elements are molybdenum, boron, chlorine, cobalt, iron, copper and zinc. A73-913; F73-173; OD70-275 0
TRACE ELEMENTS: Usual Ones Recognized are iron, manganese, molybdenum, boron, and copper. OA83-118 0

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