Category: Orchid Doctor

GREENHOUSES: Automatic

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago By use of Envirorrdl designed for a fan heater of 2400 watts output at 10 amps, one evaporative cooler and a circulating fan; suitable for an area 12 ft. by 8 ft.; for details see AU87(l)-36 Read More

GREENHOUSES: Automation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Electronic environmental control with modern technology without time clocks but with sensing and control devices and control equipment; refer to W9-115 Read More

GREENHOUSES: Best Construction Woods

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Redwood or cypress but the latter is hard to find; where wood contacts ground it should be soaked in copper napthanate preparation, which extends its usefulness by a few years. A72-807 Read More

GREENHOUSES: Cheap and Effective

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Construction details for a basic house sized 10ft by 8ft. by 8.25 ft. high; expandable type, refer to AU82-127 Read More

GREENHOUSES: Construction

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Design and details of a 32ft. long glass unit for an amateur's use incorporating below-ground floor, rain tanks, Insolshade bubble insulation, etc., refer to OR88-18;40For general culture in Canada... Read More

GREENHOUSES: Cool Growing Environment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Design and construction of a unit for minimum night temperature of 50dF, a day minimum of 60dF and day maximum of 85dF; heaters, polyethylene lining, air movement, ventilation, dry area; for detail... Read More

GREENHOUSES: Coverings

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Heat loss per BTU per sq. ft. per hour at zero degrees F. is: glass -- 1.13; doubled glass -- 0.65; triple glass -- 0.47; PVC -- 0.92; Fiberglass -- 1.00; Acrylic (Plexiglass) -- 1.00; Acrylic doub... Read More

GREENHOUSES: Design and Construction

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Two-storey advanced design for intermediate to warm growing conditions as part of garage architecture; for details refer to A87-799 Read More

GREENHOUSES: Design Principles

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Nine major steps: checking the local building code; the design processes; drawings and more drawings; choosing the builders; reviewing every design idea and itemizing the problem points; analyzing ... Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More