Category: Ailments

BUSH SNAILS: Control in Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use slug and snail bait (granules) containing a combination of metaldehyde and mesurol. A78-13 Read More

CYMBIDIUMS: Fungus Spots on Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Mold settles on nectar exudate and blemishes cut flowers; use a light fog spray from the back of the flower at moderate distance; spraying from the front can disturb the pollen, turn lip black brui... Read More

SCALE: Hard to Get Rid of

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use Cygon 2E at 2tpg. applied when the temperature is below 70 dF; clean off the dried sheaths from the pseudobulbs first. A82-248 Read More

CYGON 2E: As a Regular Spray

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use 3 tpg spray when temperature is below 70 Deg F. for control of scale and mealybug. A82-690 Read More

LEAF BLIGHT: Also Known as Leaf Die-back, Tip Burn

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Caused by fungus invasion; spreads gradually through leaf; cut it out before treating; infected areas show watery before drying; control with Benlate, or Anti-Damp, or Tersan. RMH Read More

CYMBIDIUMS: Symptoms of Potassium Deficiency

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Leaves of older growths tend to turn yellow, starting from the tip and working toward the pseudobulb. OD71-278 Read More

BIOLOGICAL CONTROLS: Produced in Plants Against Certain Agents of Attack

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Controls of fungal mycelium in germination and growth; the waxy coating on leaves and bulbs includes deterrent chemicals of protection. OR78-177 Read More

BLACK ROT: In New Leads of Potinara; Benlate and Natriphene Did Not Control

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use 1/2 tpg. drench of either Dexon-35, Truban, Terrazole or Banrot; commercial greenhouses may sell a few spoonfuls of one of them. A75-500 Read More

BLACK ROT: Caused by Fungi Pythium ultimum and Phytophora cactorum

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Most destructive to cattleya-types; worst during cool months; purplish brown area on leaf or root and rhizome and upward into pseudobulbs; drench with Truban 1/2 tpg. AH16 Read More

PESTICIDES: Shelf Life

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They should be purchased for short-term use; mark the date of purchase on the container; most keep their effectiveness for two or more years if stpred properly; signs of ineffectiveness in dusts an... Read More