IRON: Odontoglossums Need it

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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Chelate of Iron should be supplied to the plants strictly according to the instructions on the label; add 5ml of GU49 (powdered iron) to the slow re lease fertilizers (30ml Osmocote, nine months release type, 20ml Mag-Amp) 10ml dolomite lime, to nine litres of potting mix. AU81-179
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Iron Comments
IRON: Characteristics As a growth element it is used in the formation of chlorophyll; it is an assumed antidote against chlorosis; colors flowers darker; in many cases Iron chelate makes whites turn pink; a trace element. OA78-51 0
IRON: Deficiency In mi Itonlopsis it shows up as either blotchy leaves or as leaf tips faded from loss of green pigment; use a half dose of Sequestrol one day after heavy watering. OIE85My-3 0
IRON: Functions in Fertilizer Vitally important in the formation of chlorophyll but it is not a part of it. AU75-47 0
IRON: In Fertilizer Programs Chelated iron should be used instead of normal iron siulphate at a rate of 8 to lOppm. AU84-199 0
IRON: In the Water Supply Watering directly into the pot will cause little harm to the plants; on the leaves the iron precipitates out and colors them coppery,- eventually to reduce the light intake of the leaf and weaken the plant; remove the iron economically if possible from the water by treatment. A87-1175 0
IRON: Spray with Chelated Iron If the water supply lacks iron plants can be sprayed with it. A85-205 0
IRON: Stains Red-brown iron stains can be kept off the leaves only by keeping the water carrying the iron from dripping there. A86-42 0
IRON: Well Water Contaminant Leaves of plants get rusty; rust removal filters charged with potassium permanganate are not safe to use with plants. A72-151 0

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