Category: Ailments

FLOWERS: Drying and Dropping Off

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago This can usually be traced to lack of water; most common in the fall, with first greenhouse heat; related to dendrobiums. A79-785 Read More

FLOWERS: Twisted

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago See Crippling in cattleyas; Flowers,crippled. Read More

FUNGICIDES: Broad-spectrum

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Benlate (benomyl) or Banrot are best. A76-206 Read More

FUNGUS: Black, Sooty on Cymbidium Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It grows on the "honey dew" secreted by mealy bugs and will wash off. A63-641 Read More

INSECTICIDES: Expensive Little Packages

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The smallest available package of Mesurol WP which is frequently recommended, is 1,5Kg at the price of NZ$124.00. NZ86-193 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

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