06.03.2015 Views

marlboro - Central Mass. Mosquito Control

marlboro - Central Mass. Mosquito Control

marlboro - Central Mass. Mosquito Control

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

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

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!