MITES, FALSE SPIDER, PHALAENOPSIS: Characteristics and Controls

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin about 8 years ago.

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A false spider mite, it does not spin webs; a pest in southern states of the U.S. and some European areas; causes dark spots on the leaves which induce necrosis and loss of tissue; Azodrin, Metasystox and Kelthane were, or are registered for use. AH86-59;62
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MITES, FALSE SPIDER: A Most Destructive Pest Smaller than the two-spotted mite, does not spin webs; not visible to the naked eye; reddish in color; cast white skins often present in great numbers is sign of -their presence; common ones are,Phalaenopsis mite, Privet mite; their feeding produces ye 1low spots which become sunken pits and scars which turn white or brown on both leaf surfaces; fleshy plants are most sensitive; use Dimite (best), Kelthane, chlorobenzilate, all of which can be mixed with Malathion or Sevin. A73-715; A73-812+(illus.) 0
MITES, FALSE SPIDER: A Sinister Creature 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.; Kelthane and Diazinon recommended as controls. A82-928 0
MITES, FALSE SPIDER: Characteristics and Controls 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 Temik granules; apply twice seven to 10 days apart. AH4 0
MITES, FALSE SPIDER: Controls Most vicious and destructive of pests; too small to be seen even with a magnifying glass unless it's a 10X, 14X lens; phalaenopsis mite (Tenuipalpus pacificus) attacks ferns and orchids; they do not spin webs; feed on both sides of leaves; Malathion may kill mites, but not the False spider mites; control with Kelthane, Dimite, etc. N327; OD70-155; OD71-167 0
MITES, FALSE SPIDER: How They Become a Problem Infestations are usually an indication of bad cultural practices because they normally thrive under high light and dryness. A85-397 0
MITES, FALSE SPIDER: Spraying with Kelthane as Control Believed to have stunted some phalaenopsis plants; two tpg. could not cause the injury; perhaps three tpg. might do so,but unlikely; cause not certain. A74-792 use liquid 1 tpg.or powder 1.5-2 ttpg. OWD. 0
MITES, PHALAENOPSIS: Characteristics and Damage Tenuipalpas pacificus causes purplish discoloration to the bottom of leaves; the green fades and yellowing occurs; or first indication can be deep pits or sunken areas and slight olive-colored or rusty discoloration; sometimes found only on basal portions of leaves; frequently found on upper sides; many genera of plants can be infected; col.illus. OD68-202+; OR74-232 0

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