Category: Culture

GREENHOUSES: A Basic Law in Their Operation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The taller the greenhouse the easier it is to operate. OD67-298 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: Epoxy Enamels as Paint on Wood

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is used for boat bottoms, should do almost as well in greenhouses. A66-580 Read More

GREENHOUSES: Foundations Constructed of Creosoted Railway Ties

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The creosote should be coated carefully with linseed oil; for added protection from the creosote fumes areas exposed on the inside should be covered with aluminum foil. A73-615 Read More

GREENHOUSES: Fumes -- Toxic Effect of Pesticide Smoke

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Their effects remain for about 12 hours; it is safe to enter 12 hours after using Plantfume #103. A78-403 Read More

GREENHOUSES: Glass Type Recommended

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A double-thick, regular, clear "B" quality glass is good. A64-975 Read More

GREENHOUSES: Heat Loss Calculation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A simple method: the heat loss in BTU's per hour is equal to the square feet of the glazed area X the temperature lift (raising greenhouse temperature above the average outside temperature) X 0.44 ... Read More

GREENHOUSES: Heating

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Transmission coefficients for materials; for a list of 34 materials and the degrees of heat loss; refer to OD71-192+ (See also Heating). Read More

GREENHOUSES: Insulation Air-space

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Ideally, the space between outer and inner layers of a greenhouse cover should be approximately 1.5 inches thick, but spaces of three-quarters to eight inches are used; below three-quarters inch th... Read More

FERTILIZERS: 30-10-10 with Soil Acidifiers and Chelated Iron

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A suitable fertilizer, use 1/2 tpg. at every watering but let 10% of the liquid run out of the pot for leaching action. A74-114 Read More