THRIPS: Controls

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 8 years ago.

Article Blog   Article Index
Spray the young spikes preventively with Sevin 50W (Carbaryl Insecticide) in its wettable powder form; when the flowers open spray with Black Leaf 40 (nicotine sulfate); some growers use Orthene 75 (Soluble powder) at i tpg. F87-87

They require persistent effort; control with Malathion, Cygon 2E, Diazinon or a Dithio smoke. A78-909; A64-692; S193; in Florida four types named and five controls given; refer to DK9+

Share on Social Media:  
Log in to Add a Comment

More The Orchid Doctor Articles under the Heading Thrips

Thrips Comments
THRIPS: A Common Pest on Vandas Inside the bud, thrips are protected from insecticides, so it is a good idea to spray early; if late use a fine spray or a misting to avoid injury; use Sevin SOW; if flowers are open use Black Leaf 40 which does not damage the flowers. A85-817 0
THRIPS: Characteristics and Controls There are both winged and wingless phases; they scrape the surface tissue of plant parts especially flowers, causing shallow, silvery scars; they are fast moving and hard to see; spray with Malathion. A73-715; N328They are a problem only occasionally; sometimes a problem with cymbidiums in bud stage; they can enter the bud sheath and become protected from insecticides; can cause ovipositor punctures of flowers; control with Diazinon, dimethoate, Malathion and Zectran sprays, or Dithio smokes or Temik granules. AH4They are sometimes airborne on strong air currents; are abundant on weeds and vegetation outdoors; control with frequent applications of weak solutions of insecticides, especially on vandaceous plants. F76-33 0
THRIPS: Control If Malathion Has Not Been Effective The Malathion used must have been old; use fresh Malathion, spray at 1.5 tpg. every five to seven days, with three applications; or spray with Zectran at 3 tpg. A72-1100 0
THRIPS: Controls, in Increasing Degrees of Toxicity to the User Malathion (LD50=2oz.), lindane (1/2 oz.) and dimethoate (1/2 oz.) A68-582 0
THRIPS: Distinct From Springtails Thrips also can be found in compost, they damage the roots at the conjunction of the new growing tip and the developing velamen, an area rich in sugars; control them with Malathion. OR82-256 0
THRIPS: Insecticide Control for Indoors For a basement collection under lights, use Malathion but if it is not effective, use Diazinon at the rate of 1 tpg.; it may be repeated in 14 days. A81-150 0
THRIPS: On Cymbidiums They are among the worst pests, causing spotting on flowers; the damage occurs in the form of halo dots on sepals or petals and appear very similar to Botrytis spotting; use Cygon every six weeks as a pot only drench. A67-499 0
THRIPS: On Vandas and Ascocendas Flowers show scarred, burned, or misshapened from the feeding, especially in South Florida; control them by applying wettable powders such as Sevin, or Orthene. F81-153 0

New Topics

  1. Danielle Carbonneau asked question phalaenopsis, dendrochum and Odontoglossum in category Phalaenopsis
  2. Nicholas Filannino asked question Phalaenopsis William Kistler? in category General Discussion
  3. Mark Farran asked question How to open and read articles listed in category General Discussion
  4. Juliann Eckhard started topic Cattleya little susie in category Cattleya Alliance
  5. Shannon Gardea asked question NELLY ISLER in category General Discussion
Ask a Question

Start a Topic

New Comments

  1. Louis Wilson commented on member plant E. alata f. alba by Louis Wilson
  2. Julie Ellner commented on member plant Phal. amabilis var. formosanum by Vickie Seibert
  3. Julie Ellner commented on member plant Rlc. Green Dragoon 'Mendenhall' by Jeanne Uzar Hudson
  4. Danielle Carbonneau commented on member plant Ons. Catatante 'Los Roble' by Henry Shaw
  5. Barry J Silver commented on orchid Lyon. SunCoast Pink Passion
  6. Carol Holdren commented on topic "Phalaenopsis William Kistler?" by Nicholas Filannino
  7. Carol Holdren commented on orchid Colm. Eric Gabriel Heines
  8. Carol Holdren commented on topic "Cattleya little susie" by Juliann Eckhard
  9. Carol Holdren commented on member plant Bc. Morning Glory by Chris Siolo
  10. R .Benson commented on member plant Kir. New Hybrid (Fred Clarke) SVO9831 by R .Benson
  11. Carol Holdren commented on topic "Blooming Stenglottis Venus “jamboree “" by John Urey
  12. Jeanne Uzar Hudson commented on member plant Lc. Canhamiana var. coerulea 'Cobalt' by Jeanne Uzar Hudson
  13. Jeanne Uzar Hudson commented on member plant Sns. gemmata by Jeanne Uzar Hudson
  14. Stefan Neher commented on topic "Orchid roots .com site?" by Mary Lane
  15. Kevin Barry commented on member plant Bul. Tammie Sue Pernas by Tony Pernas
  16. Linda Hartman commented on member plant Ctt. Final Blue by Linda Hartman
  17. Kevin Bergeson commented on member plant Paph. rothschildianum by Kevin Bergeson
  18. Carol Holdren commented on topic "recently purchased orchid shows unstoppable roots " by David George
  19. Michael Makio commented on orchid V. Beatrice Makio
  20. Carol Holdren commented on topic "shorter stem with less vigorous blooms" by katherine mott