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 When
will the spraying take place?
Depending on the rate of insect development, the first application will
probably be conducted sometime in April and ending as late as early
June. This period is highly weather dependent and relates to
timing the spray when the insects are in the most vulnerable life
stages.
Does
the aerial spraying involve one treatment or more? If more, why?
The aerial spray treatment will likely require three applications, spaced about a week
apart. This is because gypsy moth larvae would be hatching over a period of time and
repeated sprays would be necessary to ensure that emerging larvae would feed on the Btk
while it was still on foliage and still active. Btk is only effective for a short time
after application. Localized follow-up treatments in the second year may be necessary to
ensure eradication.
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