Category: Ailments

SCALE (GENERAL): Characteristics and Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There are two groups, the soft scales and the armored scales; different species require different controls; species common to California described; refer to AH6+; N328+; S192 Read More

SCALE (GENERAL): Control Experiments

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Foliar application of seven insecticides was tried on vandas for control of proteus scale, and on cattleyas for control of boisduval scale; dimethoate (Cygon) provided a complete control; phytotoxi... Read More

SCALE INSECTS: Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In Hawaii, use Diazinon WP or EC (emulsifiable concentrate) as a spray; use Malathion, or Cygon 2E. P69(l)-ll Read More

CYGON 2E: Systemic Insecticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Now considered unsuitable for some orchids; those injured include calanthes, Cycnoches ventricosum, Den. phalaenopsis, Den. moschatum. Neomoorea irrorata; "please do not use it on orchids". A86-506... Read More

MITES, TWO-SPOTTED: Spider, or Red Spider Mite

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They may be green, orange, pale yellow or red; the stippling is either whitish or brownish; damage is done on the underside of the leaves, with puncture wounds; sometimes the wounds acquire a water... Read More

MITES, TWO-SPOTTED: The Life Cycle

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago As temperature rises in the summer above 50 dF, the incubation period is reduced from 21 days at 60 dF to 6 days at 90 dF and their numbers increase in geometric proportion; use Kelthane (if you ca... Read More

MITES: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Kelthane is a constituent of several available sprays (possibly now banned in some areas); a contact spray, it should be applied to the underside of foliage; as mites have a four day cycle it is vi... Read More

CYGON 2E: Systemic Insecticides

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is the same as Cygon 2.67, or Dimethoate, or Meta-systox R. A76-795 Read More

SCALE: On a Single Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Control can be achieved by first scraping them off and then swabbing with methanol. A82-248 Read More

PESTICIDES: Shelf Life

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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