Tolerance Variation to Mexican Bean Beetles of Common Bean Cultivars

Final Report for FNE03-457

Project Type: Farmer
Funds awarded in 2003: $1,974.00
Projected End Date: 12/31/2004
Region: Northeast
State: Connecticut
Project Leader:
Bryan Connolly
Green Dragon Farm
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Project Information


Note to readers, attached is the complete final report for FNE03-457

The goal of this project was to test the tolerance of different bean cultivars to Mexican Bean beetle to identify varieties that produce well under intense pressure from this insect. Six varieties were planted in a randomized block design. Leaf damage was assessed during the middle of the growing season and yield data was collected at harvest.

Bryan found that variety predicted the number of beans, there was no difference in tolerance of the varieties to Mexican Bean beetle based on leaf damage, and that the combination of variety and amount of leaf damage affected the yield of the beans.

Bryan hypothesizes that the top two yielding varieties (Vermont Cranberry and Maine Yelloweye) may not be any more tolerant of Mexican Bean beetle, but they may mature faster or allocate more resources to fruit production, resulting in a higher yield. Bryan will continue to grow Vermont Cranberry and Maine Yelloweye for seed because he feels they perform well for him, despite a great deal of bean beetle damage.


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  • Diane Dorfer
  • Kimberly Stoner


Participation Summary
Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture or SARE.