Category: Culture

EVAPORATIVE COOLERS: Used Throughout the U.s.a.

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The fan and pad cooling system is the most popular. A80-356 Read More

FAN-JET SYSTEM: For Ventilation and Heating

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A fan at the end of the greenhouse is attached within a long tube of polyethylene punched with holes every two feet; heated air from the furnace or fresh air from outside is circulated. A67-383+; A... Read More

FERTILIZERS: Tailored Feeding Plan

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 1st week: fish emulsion; 2nd week: for vegetative growth 30-10-10 but plants making roots or flowers get 7-28-15 and resting plants get only water; 3rd week: all plants 18-18-18 except C.mossiae ty... Read More

FANS: To Run Continuously in a High Humidity Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Suitable types can be purchased from the local electric supply house. A70-631; small fan heater controlled by time-clock can be used to boost morning temperature to 60 deg. F. for an hour or two. O... Read More

FANS: When to Run, When to Shut Off?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Run them 24 hours usually; they are needed most at night. A70-798 Read More

FERTILIZERS: Applied to Pots Containing Various Potting Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If 30-10-10 is used it can be applied to bark mixes and tree fern mixes generally. A69-793 Read More

CHARCOAL: Properties

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Investigation of cationic exchange capacity; retention of nutrients; bacterial activity; high water holding capacity; and a high bacteria activity; feed organic type fertilizers to it; lasts foreve... Read More

FERTILIZERS: Injury Caused by

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A frequent problem; only 2% of the composition of the plant tissue includes mineral content; over-fertilization inhibits growth; diluted liquid fertilizers are best; nature of damage caused and des... Read More

FERTILIZERS: As Pot Surface Dressing, What Is Safest?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Liquids are safeest and are effective. A79-370 Read More

CHARCOAL: In Cymbidium Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Has many good qualities to recomend it; used in many parts of the world; one questionable point is its filtering effect whereby modern insecticides and fungicides added to the mix may be adsorbed a... Read More