Environmental Engineering Reference
In-Depth Information
Table 5
Acute risk results for birds exposed to fl owable chlorpyrifos
Birds protected (%)
Risk category
Crop
Use pattern
Species
a
5th
50th
95th
Actual
5th
50th
95th
Actual
Alfalfa
Southern plains—1.05 kg ha
−1
(0.94 lb A
−1
) applied broadcast
4× with 10-d interval
Dickcissel
79.6
98.8
100
NA
Intermediate
De minimis
De minimis
NA
Mourning dove
100
100
100
NA
De minimis
De minimis
De minimis
NA
Red-winged blackbird
NA
NA
NA
93.0
NA
NA
NA
Low
Vesper sparrow
64.6
97.0
100
NA
Intermediate
De minimis
De minimis
NA
Western meadowlark
95.5
99.8
100
NA
Low
De minimis
De minimis
NA
Almond
California—2.11 kg ha
−1
(1.88 lb
A
−1
) applied airblast post-plant
2× (May, hull-split) with 10-d
interval
Abert's towhee
100
100
100
NA
De minimis
De minimis
De minimis
NA
Blue grosbeak
62.3
92.5
99.7
NA
High
Low
De minimis
NA
Common crow
100
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
82.8
NA
NA
NA
Intermediate
Apple/
Cherry
Northwest-California—2.11 kg ha
−1
(1.88 lb A
−1
) applied airblast
during dormant season/
Michigan—2.11 kg ha
−1
(1.88 lb
A
−1
) applied broadcast
post-plant
Blue grosbeak
73.7
95.8
99.9
NA
Intermediate
Low
De minimis
NA
Common crow
100
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
90.5
NA
NA
NA
Intermediate
Broccoli
California-California—2.36 kg ha
−1
(2.11 lb A
−1
) applied band
at-plant and post-plant 3× with
10-d interval
Common crow
100
100
100
NA
De minimis
De minimis
De minimis
NA
Horned lark
99.4
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
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