Category: Culture

SHADING, GREENHOUSE: Plastic or Metal Materials

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 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 Read More

SHADING, GREENHOUSE: Polyethylene White Film

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago "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 Read More

SHADING, GREENHOUSE: Whitewash

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 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 Read More

SHADING, ECLIPTIC: Permanent with No Movable Parts

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The amount of shading changes with the inclination of the sun; for the south end of a greenhouse; like a fixed Venetian blind; slats are set so low that the winter sunlight enters, but the high sum... Read More

SLABS: Kinds in Use

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Palm logs; tree-fern; cypress. A77-49; cork, bark (general); hardwood, cedar, redwood. A74-769 Read More

SLABS: Tree-fern

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is used in great numbers for hybrids and species; for description of methods used and favorable results, refer to A76-310+ (for California); for follow-up see AB77-998+ Read More

SLAT HOUSE: Florida Construction

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The sides, except north, and top should have slats spaced twice the width of the slats; cover in summer with Saran cloth or Spanish moss; if roof is covered in order to shed rain slope it and use c... Read More

SOLAR ENERGY: To Heat Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 16ft. by 36ft. greenhouse in San Diego, Cal., kept at 10 deg.F. differential when the lowest temperature outside was 29 deg. F. in an intermediate house, well insulated with two layers of polyethyl... Read More

SOLAR RADIATION: U.S. Cities Table

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Three-year average solar radiation square feet of horizontal surface for peak summer months; about 70 cities listed; highest radiation is in Phoenix with 200; lowest is Caribou, ME. at 115. (RMH) Read More

SOLAR STILL: To Obtain Distilled Water

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Recommended for growers in warm areas where local water supply has a high sodium content and where sensitive plants are not too numerous or large; refer to OD79-53 Read More