Approximately 90% of the growers in
the Napa EGVM treatment area have picked up their Isomate pheromones and placed
these dispensers in their vineyards. If you have not done so already, now
is the time to put up these pheromones for mating disruption. These can
be obtained through your dealer or picked up at Wilbur-Ellis in St. Helena, and
will be paid for by the county of Napa. These should be applied at 200
per acre. For those who have extra pheromone dispensers please return
these immediately to the Agricultural Commissioners office or contact me and I
can pick them up at your vineyard. If you are in the treatment area, and
have a vineyard of 2 acres or less contact the Agricultural Commissioners
office or myself to set up an appointment to receive your material.
As a reminder all vineyards in the
Pope Valley, Chiles Valley, and Howell Mountain areas should not use pheromones
this season as these areas are targeted for deregulation and the use of
pheromones will hinder the ability to detect the moths in pheromone
traps. Growers in Gordon Valley are also discouraged from using the
pheromones in order to aid neighboring Solano County growers in the
deregulation of their vineyards.
Residential treatments will begin
shortly in the southern and eastern parts of the city of Napa, and also in
areas of American Canyon.
Spray treatments are recommended in
all vineyards that are in the treatment area, but should not be started until
just before bloom.
Thank you for all your cooperation
so far, and please call if you have any questions.
Martin Mochizuki
Napa County EGVM Grower Liaiosn
707-975-2133
707-252-9218 fax
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