Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
Use man-made clay stones, a 2-2-2 nutrient solution; two styles of hydro-pots are available in sizes from four to nine inches; paphiopedilums, dendrobiums, odontoglossums and others grow successful...
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HYDROPONICS: In Orchid Culture
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
The system is not new; it makes use of such media as scoria, volcanic cinders, pumice, rock wool, manufactured resins (such as Oasis) and other media; they need no replacement and can be re-used af...
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HYDROPONICS: Trials
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
A Laelia pumila was repotted into round pebbles and placed in a hydroponic set-up where it showed astonishing improvement; a complete unit was set up with two fertilizer solutions, one for spring t...
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HYDROPONICS: Use of Glass Netting
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
A description of a new method whereby fibres with capillary spaces raise the water with nutrients from the tray to the plant roots in a continuous, constant and sufficient method; a patented system...
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HYGROMETERS: Wet and Dry Bulb
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
One deg. F. depression on the wet bulb equals 5% drop in humidity from 100%; if the wet bulb reads 62 deg. F. then the relative humidity is 100 less 15 or 85%; keep the water supply in the bulb ade...
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STAKES: Copper Wire
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
It is uncertain whether enough copper comes off the stakes into the pot to do damage; be safe and use steel which is cheaper; metal coat hangers are good and can be readily cut and shaped; green pl...
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IRON: Characteristics
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
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 elemen...
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IRON: Functions in Fertilizer
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
Vitally important in the formation of chlorophyll but it is not a part of it. AU75-47
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IRON: Stains
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
Red-brown iron stains can be kept off the leaves only by keeping the water carrying the iron from dripping there. A86-42
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IRON: Well Water Contaminant
Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago
Leaves of plants get rusty; rust removal filters charged with potassium permanganate are not safe to use with plants. A72-151
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