SHADING, GREENHOUSE: Green Fiberglass

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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Green light is inefficient for plant growth; white light or shading enables plants to produce more food. A66-927; A70-916
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Shading, Greenhouse Comments
SHADING, GREENHOUSE: Aluminum Paint Has a high reflective quality and keeps the greenhouse temperature ideal for growing, with excellent results; no report on rate of wear-off or removal in fall. A63-835 0
SHADING, GREENHOUSE: Formula Flaked off well in the fall: 1 lb. white lead (now withdrawn from the market?), 2 oz. linseed oil, 1 gal. mineral spirits. A75-618 0
SHADING, GREENHOUSE: Glass Wax Forms a hazy white barrier, lets in plenty of light; a second application puts on heavier shading; wipe off in fall. ODA76-14 0
SHADING, GREENHOUSE: Green Paint "Rez" sage green paint adhered best to fiberglass; in Missouri, it caused no bud burn; higher light possible under green shading; refer to A61-458 0
SHADING, GREENHOUSE: Green Saran Cloth Suitable for cattleyas; only the reflected light will be green; Saran netting does not transmit light but merely reflects it. A70-427 0
SHADING, GREENHOUSE: Latex Paint Latex shading is available from dealers; it is easy to remove in the fall; addresses given. A75-618 0
SHADING, GREENHOUSE: Light and Temperature Control Data on the best amounts of light; tolerance of plants to light; relation of light to temperature; solar radiation; role of reflection; methods of shading; formulae for sprays; refer to A64-207+ 0
SHADING, GREENHOUSE: Light Transmission Recommended For New Jersy, for general purposes 30 to 35% light transmission is recommended; that is 60 to 75% shade. A74-708 0
SHADING, GREENHOUSE: Liquids Some have to be mixed 24 hours ahead to set; longer-lasting quality is improved by adding 1/2 pint raw linseed oil to five gals, of finished ready-to-apply mix, but added before the water. A66-587 0
SHADING, GREENHOUSE: Paphiopedilums In New Jersey it is recommended to apply about 75 to 80% shading; or a light transmission of only 20 to 25%. A74-708 0
SHADING, GREENHOUSE: Plastic Bags They can be used successfully; beige colored garbage bags transmit good natural light; slit them and shape and squeegee onto damp glass. A70-527 0
SHADING, GREENHOUSE: Plastic or Metal Materials In Florida metal lath for a shade house, pitched instead of flat is preferred because it provides better circulation and is cooler than Saran which restricts air movement. F73-77 0
SHADING, GREENHOUSE: Polyethylene White Film "highway white" used for shading reduced light by about three-quarters; foot-candles were reduced from 2,500 range to 1,500 in California. A68-596 0
SHADING, GREENHOUSE: Whitewash Apply it gradually over several weeks in spring to get the desired amount for summer; in fall remove what remains after rains, also gradually, to condition the plants to brighter light. OD65-17 0

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