Environmental Engineering Reference
In-Depth Information
Table 8
Acute risk results for birds exposed to granular chlorpyrifos
Birds protected (%)
Risk category
Crop
Use pattern
Species
a
5th
50th
95th
Actual
5th
50th
95th
Actual
Broccoli
California—2.52 kg ha
−1
(2.25 lb A
−1
)
applied T-band at-plant (10 cm
(4
″
) band, 75 cm (30
″
) row
spacing)
Horned lark
99.6
100
100
NA
De minimis
De minimis
De minimis
NA
Mourning dove
100
100
100
NA
De minimis
De minimis
De minimis
NA
Red-winged blackbird
NA
NA
NA
100
NA
NA
NA
De minimis
Corn and
sweet corn
Corn belt—1.46 kg ha
−1
(1.3 lb A
−1
)
applied T-band (15 cm (6
″
) band,
91 cm (36
″
) row spacing)
Horned lark
99.5
100
100
NA
De minimis
De minimis
De minimis
NA
Common pheasant
100
100
100
NA
De minimis
De minimis
De minimis
NA
Mourning dove
100
100
100
NA
De minimis
De minimis
De minimis
NA
Northern bobwhite
NA
NA
NA
100
NA
NA
NA
De minimis
Red-winged blackbird
NA
NA
NA
99.9
NA
NA
NA
De minimis
Corn and
sweet corn
Corn belt—1.46 kg ha
−1
(1.3 lb A
−1
)
applied in-furrow at-plant (7.5 cm
(3
″
) furrow, 91 cm (36
″
) row
spacing)
Horned lark
99.6
100
100
NA
De minimis
De minimis
De minimis
NA
Common pheasant
100
100
100
NA
De minimis
De minimis
De minimis
NA
Mourning dove
100
100
100
NA
De minimis
De minimis
De minimis
NA
Northern bobwhite
NA
NA
NA
100
NA
NA
NA
De minimis
Red-winged blackbird
NA
NA
NA
100
NA
NA
NA
De minimis
Corn and
sweet corn
Corn belt—1.12 kg ha
−1
(1 lb A
−1
)
applied broadcast post-plant
Horned lark
95.9
98.9
99.9
NA
Low
De minimis
De minimis
NA
Common pheasant
99.9
99.9
99.9
NA
De minimis
De minimis
De minimis
NA
Mourning dove
99.9
99.9
99.9
NA
De minimis
De minimis
De minimis
NA
Northern bobwhite
NA
NA
NA
100
NA
NA
NA
De minimis
Red-winged blackbird
NA
NA
NA
100
NA
NA
NA
De minimis
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