treated. Pesticide residues were detected on all the
seedlings taken from coastal sites in April 2007,
while no pesticides were detected on seedlings taken
from inland sites in May and June of 2006 (Table 4).
Fungicides detected were captan, chlorothalonil, and
iprodione. Insecticides detected were permethrin and
diazinon. The concentrations of pesticide residues
detected ranged from 0.06 to 1090 lg g1 seedling
mass. The highest concentration (1090 lg g1
)
found was of chlorothalonil on a Douglas-fir
seedling taken from Site N.
Among the seedlings that were pesticide treated,
the amounts applied were generally equivalent; however,
less than half the amount of permethrin was applied
to 2006 seedlings compared to 2007 seedlings.
Two inconsistencies between nursery records and
chemical analyses were found. Captan was detected
on a Sitka Spruce seedling taken from Site R although
captan application was not recorded in the
nursery records. Chlorothalonil and iprodione were
detected on a Coastal Douglas-fir seedling taken
from Site N while records do not show pesticide
application on this batch of seedlings.