Newly Posted Articles

COPPER SULPHATE: Toxicity Reactions in Humans

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Intestinal distress and collapse. A68-583 Read More

LAMPS: Colored, as Heat Source At Night for Plastic-enclosed Area Outside

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago All efficient lamps by their heat emission affect the photoperiodicity of plants; use electric heaters instead. A71-153 Read More

LEAF SPOTS: Anthracnose Is a Common Cause

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Small spots occasionally run together; tissue between becomes tan and papery; fruiting bodies show as black dots sometimes as rings; sometimes caused by Circospora sp. (see Leaf-spot) with brown su... Read More

LEAVES: Black Tips

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They progress downwards rapidly to the pseudobulb; probably black rot; spray with Truban (Terrazole); provide good air circulation. A78-112 Read More

MASDEVALLIAS: New Growth Catches in the Sheaths

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It has been seen when they are grown under lights; possibly arises because the plants grow extremely compactly; do not pot them too deeply as this may be contributory; make sure they get enough lig... Read More

MERISTEMING: Variable Success Rates

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The success rate in 1984 for odontoglossums was only about 25% but for oncidiums and miltonias it was over 90%. OA84-6 Read More

MILTONIAS: Growths Turn Yellowish-green and Fall

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Perhaps over-watering or accumulating salts in the medium cause this to new growths; try applying water liberally to the dry plants, after 15 minutes repeat. A77-527 Read More

MILTONIAS: Leaves Show Sudden Brown Patches

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Sample inspected showed no pathogens; the tip burn may have been caused by too strong fertilizer or lack of leaching. A65-910 Read More

MITES (GENERAL): Stages in Growth

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There are four inactive (egg or resting) stages when insecticides are not effective and three when they are: larvae, nymph and adult; if Vapona fails then the mites have become resistant to all org... Read More

MITES (GENERAL): The Best Miticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Recommended is Morestan. OD73-217 Read More