ศัตรูกล้วยไม้: เอกสารเพื่อการเผยแพร่

1. ศัตรูกล้วยไม้ ภัยร้ายในฤดูฝน

2. ไรศัตรูกล้วยไม้

เอื้องโมกกุหลาบ และเอื้องโมกพรุ Papilionanthe and its pest

Hobby Orchids:เอื้องโมกกุหลาบ และเอื้องโมกพรุ Papilionanthe and its pest

Author: SRISUDA THOTHONG, November 2010
E-mail: thothongsri@gmail.com

A few orchids are grown on the sunlight directly, like as Papilionanthe. Species and hybrids of Papilionanthe teres and P. hookeriana are easy to plant and less careful. However scale insect and mites mostly occurring on plants, pesticide sprays should be done.

Pest of Papilionanthe

THRIPS PALMI KARNY, INSECT PEST OF DENDROBIUM ORCHIDS, เพลี้ยไฟกล้วยไม้

SRISUDA THOTHONG Horticultural Research Institute, Department of Agriculture, Bangkok 10900, Thailand. thothongsri@gmail.com

INSECT PEST OF DENDROBIUM ORCHID: Thrips palmi Karny, เพลี้ยไฟกล้วยไม้

Dendrobium orchids are cut-flowers for export of Thailand. Thrips palmi Karny is the predominant species which attacked orchids, its feeding cause damage symptoms such as distorted blossom, deformed or scarred on flowers, colorless spot on petal. It rarely found severe infestation in the fields, but T. palmi is a problem of exported orchids because it can be carried on flowers and the risk that exported flowers found to be infested will be rejected by quarantine inspectors. Insecticide control is a common tool that farmers use to reduce the number of thrips on flowers. 

 

Figure a and b: The larval thrips were crawling on blossoms at early morning when it out break.
Figure c: The orchid blossom was damaged by thrips, causing heavily scars.
Figure D: The young blossom was damaged by thrips, it became distorted.