Category: Ailments

BACTERIAL BROWN SPOT: On Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Soft water-soaked lesion; turns black or brown; spray with Physan 20, 1/2 ttpg.; repeat as needed. A66-403; A73-888; AH19 Read More

MOLD, SNOW: Phytogaster Sp.

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Not a parasite but a saprophyte on the growing media;, leads to poor growth; water-repellent fungus prevents roots from getting water and air; white powdery growth on the top of the media indicates... Read More

MITES, FALSE SPIDER: A Sinister Creature

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The damage caused on different plants; the difficulty of locating and identifying it with a 10X lens; the similarity of its damage to those caused by other harmful agents; its appearance,etc.; Kelt... Read More

PLANTVAX 75W: A Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Used for control of rust fungi. AH15 Read More

MITES, FALSE SPIDER: Characteristics and Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They are barely visible; do not spin webs; Tenuipalpus pacificus; Brevipalpus australis, B.oncidii, B.obovatus; they cause discolored flecks and depressions; use Kelthane, or Diazinon sprays,,or Te... Read More

MITES, FALSE SPIDER: How They Become a Problem

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Infestations are usually an indication of bad cultural practices because they normally thrive under high light and dryness. A85-397 Read More

MITES, RED SPIDER: Cymbidium's Worst Pest

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It produces small white spots on undersides of leaves, they spread from leaves to flowers; are less active outdoors; water sprays indoors only keep them down temporarily; they can increase in great... Read More

MITES, RED SPIDER: On Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Controls, etc.: for detailed instructions, cautions and recommendations, refer to A67-497+; OR74-228 Read More

MITES, RED SPIDER: Sprays or Fumigations

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Where there are lots of buds on cymbidiums it is better to fumigate to control the mites rather than spray, reason: possible damage to the buds. OR74-228 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