Mapping Sugarbeet Root Maggot Populations - 2002

The following maps represent an estimate of sugarbeet root maggot adult populations as monitored by sticky stakes in the Red River Valley (locations of which are denoted on the maps by grey stars). The estimates are kriged surfaces created in ArcMap 8.1. Trap locations were slecetd not only to reflect historical hotspots, but also to provide a somewhat even ocverage of the sugarbeet production area.

Mean catch per stake is presented for summed sample periods while the cumulative catch shows the running mean catch per stake.

Please feel free to contact us with questions, comments or suggestions. If you feel the maps do not accurately reflect the populations or you feel there is an important area that may be undersampled, please feel free to suggest trap locations. We are willing to add or adjust trap locations (within reason - we have limited resources). The contact information is at the bottom of the page.

Mean Stake Catch for dates up to July 10 - these maps estimate the total catch through the week. Click on any image for larger version.

Mean Catch Per Stake, May 30 - June 6.

Mean Catch Per Stake, June 6 - 17.

Mean Catch Per Stake, June 17-25.

Mean Catch Per Stake, June 25 - July 03.

Mean Catch Per Stake, July 03 - 10.

Cumulative Mean Stake Catch through July 10 - these maps estimate the total catch through the season. Click on any image for larger version.

Cumulative Mean Catch Per Stake, May 30 - June 17.

Cumulative Mean Catch Per Stake, May 30 - June 25.

Cumulative Mean Catch Per Stake, May 30 - July 03.

Cumulative Mean Catch Per Stake, July 03 - 10.

Visitors may notice a change in the maps; a new scale was adopted including blank areas within the trapping area representing regions where root maggot populations were estimated to be 0/stake.

This project is a collaborative effort between University of Minnesota, North Dakota State University, the Minnesota Department of Agriculture and American Crystal Sugar and has been funded by American Crystal Sugar and the Sugarbeet Research & Extension Board of Minnesota and North Dakota.

Questions? Comments? Contact us at:

imacrae@umn.edu