marlboro - Central Mass. Mosquito Control
marlboro - Central Mass. Mosquito Control
marlboro - Central Mass. Mosquito Control
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DRACUT 2005<br />
LARVICIDE EFFICACY<br />
HOLLISTON 2005<br />
LARVICIDE EFFICACY<br />
AVG. LARVAE/DIP<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
6<br />
5<br />
5<br />
0<br />
0<br />
0<br />
pre post pre post pre post<br />
AVG. LARVAE/DIP<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
5<br />
4<br />
0<br />
0<br />
pre post pre post<br />
Dracut Site 1 Dracut Site 2 Dracut Site 3<br />
Holliston Site 1 Holliston Site 2<br />
LOCATION<br />
LOCATION<br />
HOPKINTON 2005<br />
LARVICIDE EFFICACY<br />
MARLBORO 2005<br />
LARVICIDE EFFICACY<br />
10<br />
10<br />
AVG. LARVAE/DIP<br />
8<br />
6<br />
4<br />
2<br />
0<br />
4<br />
4<br />
0<br />
0<br />
pre post pre post<br />
AVG. LARVAE/DIP<br />
8<br />
6<br />
4<br />
2<br />
0<br />
7<br />
4<br />
3<br />
2<br />
0<br />
0<br />
0<br />
0<br />
pre post pre post pre post pre post<br />
Hopkinton Site 1 Hopkinton Site 2<br />
Marlboro Site 1 Marlboro Site 2 Marlboro Site 3 Marlboro Site 4<br />
LOCATION<br />
LOCATION<br />
BILLERICA AERIAL 2005<br />
LARVICIDE EFFICACY<br />
CHELMSFORD AERIAL 2005<br />
LARVICIDE EFFICACY<br />
AVG. LARVAE/DIP<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
5<br />
0<br />
2<br />
0<br />
2<br />
pre post pre post pre post pre post pre post<br />
1<br />
4<br />
1<br />
3<br />
1<br />
AVG. LARVAE/DIP<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
2<br />
0<br />
2 2<br />
10<br />
pre post pre post pre post pre post pre post<br />
1<br />
5<br />
0<br />
4<br />
0<br />
Billerica Aerial Billerica Aerial<br />
Site 1 Site 2<br />
Billerica Aerial<br />
Site 3<br />
Billerica Aerial Billerica Aerial<br />
Site 4 Site 5<br />
Chelmsford<br />
Aerial Site 1<br />
Chelmsford<br />
Aerial Site 2<br />
Chelmsford<br />
Aerial Site 3<br />
Chelmsf ord<br />
Aerial Site 4<br />
Chelmsford<br />
Aerial Site 5<br />
LOCATION<br />
LOCATION<br />
RESULTS & DISCUSSION<br />
All sites done by hand showed 100% control. A wider study of hand applications would certainly show<br />
lower efficacy, but 90% on average is not unexpected based on previous results. The aerial application<br />
showed a range of 0% to 100% control. The wide range of results is not surprising; our aerial efficacy<br />
program is more intensive, with 20 dips per every 250 acres set up as recoverable dip stations. Dip<br />
stations near the perimeter of the wetlands, roads or residential areas will not show good control due to<br />
the buffer zone employed by the helicopter pilots. Hand applications around the perimeters are often used<br />
to increase total efficacy from an area. Surveys conducted by the ground crews during post-monitoring<br />
noted that where Bti granular product was observed, very effective larval control was achieved.<br />
NOTE: REFERENCES FOR CLAIMS STATED HEREIN ARE AVAILABLE UPON REQUEST