Mapping Sugarbeet Root Maggot Populations - 2003

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

Mean Catch Per Stake, May 30 - Jun 06.

Mean Catch Per Stake, Jun 06 - Jun 13 . Note the different scale from last week!!

Mean Catch Per Stake, Jun 13 - Jun 20.

Mean Catch Per Stake, Jun 20 - Jun 27.

Mean Catch Per Stake, Jun 27 - Jul 04.

Mean Catch Per Stake, Jul 04 - Jul 11.

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

Cumulative Mean Catch Per Stake, May 30 - Jun 06.

Cumulative Mean Catch Per Stake, May 30 - Jun 13. Note the different scale than last week!!

Cumulative Mean Catch Per Stake, May 30 - Jun 20. Note the different scale than last week!!

Cumulative Mean Catch Per Stake, May 30 - Jun 27. Note the different scale than last week!!

Cumulative Mean Catch Per Stake, May 30 - Jul 04. Note the different scale than last week!!

Cumulative Mean Catch Per Stake, May 30 - Jul 11. Note the different scale than last week!!

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.

2002 arvchives available here.

These 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 red dots).

Mean catch per stake = mean number of adult flies recovered from the stakes at a location for that particular sample period. Useful for identifying peak emergence.

Cumulative Catch = mean number of adult flies recovered from the stakes at a location since start of monitoring. Useful for estimating overall regional or local populations.

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 under-sampled, 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.

Coming Soon - Methods & Materials for the project - including evaluation of spatial autocorrelation for the data, sample placement and Kriging methods.

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