Newly Posted Articles

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

KELTHANE: Toxicity Reactions in Humans

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Nervousness, tremor, dizziness and convulsions. A68-583 Read More

PHOTOSYNTHESIS: And Temperatures

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For every 18 deg.F. (10 deg.C.) rise, the rate of photosynthesis increases from 2.2 to 2.6 times, until 86 F. (30 C.) to 95 F. (35 C.) is reached when no further increase occurs; far above that the... Read More

PHOTOSYNTHESIS: In Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They fix CO-two both day and night; the balance point of photosynthesis/food formation is at 200 lux, i.e., food formation is just equal to transpiration, at light intensities from 200 lux to 5000 ... Read More

PLANTS: Imported Into the Country

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago To start them in the greenhouse, pot in moist medium, and place in a polyethylene bag with the top closed or nearly closed until the roots show. A77-209 Read More

PLEIONES: Leaves with Black Lesions

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago These are caused by too little water at the early stage of development. RMH 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

RUSTS: Sphenosphora Sp. and Uredo Sp.

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They are usually orange, brown rusty spots found on many genera; cut it off and burn the pieces of infected leaves, or better still, destroy the whole plant; spray with Ferbam or Zineb; Plantvax-75... Read More