Coronalan has demonstrated that - AFE

It has been demonstrated that Coronalan has demonstrated that thrips and tospovirus. One or
petunia indicator plants can be these materials effectively more of the areas addressed by
used with directional traps to reduce feeding by western this research should have
locate sources of infective thrips. flower thrips on crops such as applicability regardless of what
Also that removal of these Lisianthus. crop is grown or where it is
sources could dramatically Biological Control. Research produced.
reduce virus incidence in field was initiated on two natural
cut flower and bulb crops (to enemies of thrips, the nematode IMPACT TO THE
less than 1%). Thus, by using Thripinema nicklewoodi, and the INDUSTRY
information obtained from commercially available 1. Simple user-friendly keys are
directional sticky cards and predatory mite, Amblysieus available to separate the
petunia indicator plants, cucumeris. The nematode is a different thrips species.
applications of highly effective “new” natural enemy of thrips. 2. Utilize 5-10 sticky traps per
pesticides, e.g. Conserve, were Efforts have concentrated on pest management unit (5,000­
minimized and tospovirus understanding its biology, 10,000 ft2).
incidence was maintained at potential for thrips suppression, 3. 25 thrips/card translates into
very low levels. and mass-rearing possibilities. 1-2 thrips/flower, which can be
Studies with the predatory mite tolerated with little or no injury.
Chemical Control/ have revealed that the use of 4. The biopesticide, Beauveria
Application Methodology. cherry pollen to supplement bassiana, is more effective when
A wide range of new reduced releases of N. cucumeris (instead applied through solid full cone
risk materials has been evaluated of the commonly used apple or flat fan nozzles.
while conducting this research. pollen) may increase the 5. Conserve, Marathon II, and
The inconsistent results obtained effectiveness of this natural Avid were among the most
with the fungus Beauveria enemy. effective insecticides evaluated.
bassiana across the country New products, which “induce” a
could be a function of Post Harvest Control plants natural defense, have
differences in application Technology. Various treatments potential to reduce thrips
methodology. Flat fan nozzles were evaluated for the control of feeding.
and solid full cone nozzles (FF western flower thrips on 6. Thrips control achieved using
8004, SFC-1 @ 40 psi) Dendrobium orchids. Exposure the predatory mite, Amblysieus
consistently provided excellent to 1.5% O2 at 35°C for 36 h cucumeris, can be enhanced
canopy penetration and coverage resulted in 99.8 % mortality for through the addition of cherry
on the undersides of leaves. western flower thrips and pollen.
Overall, the flat fan nozzle exposure to 1.5% acetaldehyde 7. Exposure to 1.5% O2 at 35°C
appeared to be the most effective (1 h exposure at 24°C) resulted for 36 h resulted in almost 100%
in delivering spores into the in 94.2 % mortality for western control of thrips on Dendrobium
interior section plants. flower thrips. Complete control orchids.
Laboratory and field trials of of western flower thrips required 8. As the public continues to
traditional pesticides suggest that a combined treatment of 1.0% or demand less pesticides in
Conserve, Marathon II, and Avid 1.5% Aa followed by exposure agriculture, retailers and
were among the most effective to 1.5% O2 at 35°C for between wholesalers can assure them that
insecticides evaluated for thrips 18 and 36 h. IPM programs are being
control. developed and implemented for
CONCLUSIONS control of one of the major pests
Initial research with products Progress has been made in each of floricultural crops – thrips.
that “induce” a plant’s natural area that is critical to developing
defensive system, e.g. Jasmonic an effective IPM program for 2002 (August) © Copyright The
Acid, polyphenol oxidase, and American Floral Endowment. All
Rights Reserved.