Category: Culture

HEATERS: Back-up for Main Unit

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If it is ever used in emergency there should be a guarantee obtained from the dealer that it will not produce ethylene when it is used; get a written guarantee. A80-1140 Read More

ALARM SYSTEMS: How to Make One

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Basic requirements are a six-volt car battery, a bell or a buzzer, an ordinary bell transformer, a 24 volt A.C. relay, a set of contacts, an inexpensive bell button, a shut-off switch, extension wi... Read More

PH OF WATER: Adjusting Ph When Too High

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use dilute sulphuric acid or dilute orthophosphoric acid. A68-719; A78-13 Read More

NUTRITION: Principles

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Review of all aspects, from a scientific point of view; refer to A61-277+ Read More

HEATERS: Catalytic Type

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Such as made by Coleman; it is not proven but presumably they should not generate ethylene. A77-922; they are approved for emergency heating, although the amount of heat produced is low. A75-35; A7... Read More

HEATERS: For Emergency in Case Power Fails

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Hy-Lo Salamander burns either kerosene or range-oil; it is an ethylene risk; use kerosene; arrange a temporary vent to the outside; burn as bright a flame as possible. A74-114 Read More

HEATERS: Gas Space Units

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A small unit providing 22-to-50,000 BTU in which the pilot light activates a small electrical pile which in turn activates a thermostat called Self Generating, or Capillary Tube, is described, to t... Read More

POTTING: Crock Sterilization

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For re-use of crock sterilize with high-test hypochlorite at one ounce to one gal. water; pre-cleaned pots should be soaked up to 30 minutes; rinse well after; it is corrosive to steel tools but it... Read More

SARAN SHADE CLOTH: For Shading

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is most effective as an outside cover especially when supported by a framework that raises it above the glass and thus enables air to circulate between. A63-1012 Read More

SEAWEED: Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Is a favourite of some growers because it has a good complement of trace elements. OIE86Jy-10; in England seaweed derivatives are used by many growers because they supply both major and minor nutri... Read More