Pesticide Concentrations in Vacuum Dust from Farm Homes: Variation between Planting and Nonplanting Seasons
Table 2
Atrazine spraying intervals for planting and nonplanting seasons.
Planting season (April–July)
Nonplanting season (Nov-Dec)
Interval (days)
No. of homes
% of homes
Intervala (days)
No. of homes
% of homes
Number of days between end of atrazine application and sample collection
0
4
12
188–190
7
22
1-2
6
19
191–200
8
25
3-4
6
19
201–210
2
6
5-6
16
50
211–219
15
47
Number of days atrazine applied to cropland before sample collection
1-2
11
35
1-2
12
38
3-4
9
28
3-4
3
9
5-6
3
9
5-6
0
0
>6
9
28
>6
0
0
a Interval (days) in the nonplanting season represents the number of days between end of atrazine application in the planting season and sample collection in the nonplanting season.