Category: Orchid Doctor

VIRUS CONTROL BY CHEMICALS: Control by Use of Lysol

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Medical disinfectants are useless against plant virus; moist heat, caustic solutions and several others are best. A68-617 Read More

VIRUS CONTROL BY CHEMICALS: Control by Washing Hands

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The use of handsoap for washing hands after handling plants, especially virused plants, is strongly recommended. C73-130 Read More

VIRUS CONTROL BY CHEMICALS: Control for Cutting Knives

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A copper sulfate solution is 50 grams plus 50 milliliters of formalin (37% formaldehyde) dissolved in a liter of water, plus 10 to 20 drops of wetting agent or detergent; it is corrosive; a trisodi... Read More

VIRUS CONTROL BY CHEMICALS: Control on Bench Area

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Spray with trisodium phosphate 15% or at 1.5 lbs. per gal. water; or spray with Physan-20. A78-909 Read More

VIRUS CONTROL BY FLAME OR HEAT: By Heat Therapy

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Other plants have had some viruses eradicated by growing them at 95 to 100 deg.F.; heat therapy for orchids has so far failed. A79-584; OD65-106; OD78-95 Read More

VIRUS CONTROL BY FLAME OR HEAT: Control by Heat Treatment

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago While heat-treating sugar cane before planting should work to inactivate the virus, no one has applied it to orchids successfully. A74-502; has been tried by Lawson at Beltsville. OWD Read More

VIRUS CONTROL BY FLAME OR HEAT: Control by Hot Knife Gadget

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use a soldering iron gun; attach a piece of hacksaw blade connected to the hot tip; trigger the gun each time to heat the blade before cutting a flower stem. A70-415+ Read More

VIRUS CONTROL BY FLAME OR HEAT: Time Required to Flame Tools

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The temperature should be well above water boiling point, with the metal reddening if possible though that is hard on the metal; dip first in alcohol for quicker, effective action. A71-535 Read More

VIRUS IN PLANTS NAMED: Detector Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Spathoglottis is sensitive to any virus; seedlings on exposure to virus denote its presence in four to six wks. after inoculation as diamond-shaped spots or rings; refer to N326 Read More

VIRUS IN PLANTS NAMED: In Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Descriptions of severe color break; mild flower break; symetrical flower break; blossom brown necrotic streak; leaf necrosis; severe leaf necrosis; cymbidium mosaic virus; cymbidium necrotic ring-s... Read More