[mfgamembers] Results of Chlorpyrifos (Lorsban) survey

[Jon Clements]

Thanks to everyone who completed the survey, I have forwarded these results
to Dow. JC

*****

*Chlorpyrifos (Lorsban) survey results — Mass. Fruit Growers’ Association*

https://goo.gl/forms/ECKyh7B2fEmRKnbe2

*Responses = 20* (app. 20%)

*Have you used Lorsban (or generic equivalent, chlorpyrifos) in your
orchard in the last 3 years?*

YES - 19
No - 1

*For what pests did you use Lorsban (check all that apply)?*

Rosy apple aphid (apple) - 1
Dogwood borer (apple) - 13
Lesser peach tree borer (peach) - 4
Greater peach tree borer (peach) - 10
San Jose scale - 7
Pear psylla - 2
Mites (peach) - 0
Obliquebanded leafroller (apple) - 3

*Could you live without Lorsban if it went away?*

Absolutely not - 12
Maybe, we lived without Alar didn’t we? - 3
Yes, with Extension guidance on alternative management options - 5

*Comments*

We would need an effective, cost efficient/comparable alternative in order
to do without it.

There's nothing that works like Lorsban for trunk sprays!

nothing would be as effective for dogwood borer

Prefer to not lose materials that are already strictly controlled.

The buying public is going to have to be satisfied with less than perfect
fruit as our pesticide options are taken away.

I make IPM recommendations for orchard growers. We may not need to use
chlorpyrifos every year, but when we do need it, there is nothing that
compares with it for control of wood-infesting insects like boring insects
or scale insects. Mating disruption for *some* Sesiid moths is effective,
but this tactic is not available for all Sesiids nor for wood-boring
beetles, which are likely to increase as less insecticide is used overall.
Also, as tree fruit Extension entomology positions decline, research into
'alternative management options' will become increasingly difficult.


-- 
Jon Clements
aka 'Mr Honeycrisp'
University of Massachusetts Amherst Extension
UMass Cold Spring Orchard
393 Sabin St.
Belchertown, MA  01007
413-478-7219
umassfruit.com
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