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Sentinel Plot Program in Soybeans

Posted: July 12, 2012

Readers may recall that the Pennsylvania Soybean Board is funding a Sentinel Plot Program, which is being managed by Penn State Extension and The Dept. of Entomology.

Readers may recall that the Pennsylvania Soybean Board is funding a Sentinel Plot Program, which is being managed by Penn State Extension and The Dept. of Entomology.  In this effort, Penn State Extension Educators are regularly scouting fifteen ‘typical’ soybean fields across the state, reporting significant populations of plant pathogens and insect pests. For more details on this effort, see a previous article.  For all the reports thus far, see Penn State’s Field Crop Entomology website.  

Reports from the past week indicate that insect and disease populations remain low.  Pests being reported include potato leafhoppers, bean leaf beetle, grasshoppers, Japanese beetles, and just one mention of Septoria brown spot. Pests that were found during scouting are listed with their severity, which is rated on a 1-10 scale with 10 being the highest.

7 July 2012 – Dauphin County

Growth stage: R1

  • Potato leafhoppers active - Severity: 1
  • Grasshoppers active – Severity: 1
  • Lady beetles active
  • No diseases found

5 July 2012 – Lebanon County

Growth stage: R1

Field 1

  • Bean leaf beetle present – Severity: 1
  • Potato leafhopper active – Severity: 2
  • Japanese beetles active - Severity: 1
  • No diseases found

Field 2

  • Bean leaf beetle present – Severity: 1
  • Mexican bean beetle – Severity: 2
  • Potato leafhopper active – Severity: 3
  • Green cloverworm active – Severity: 5
  • Japanese beetles active - Severity: 1
  • Soybean aphid present - Severity: 3
  • Brown marmorated stink bug present – Severity: 1
  • Grasshoppers active – Severity: 4
  • Lady beetles, damsel bugs active
  • Bumble bees active
  • No diseases found

5 July 2012 – York County

Growth stage: V9/R1

  • Grasshoppers active – Severity: 1
  • Downey Mildew  - Severity: 2

Contact Information

John Tooker
  • Extension Specialist
Phone: 814-865-7082