Corn (South and Midwest)
Coordinated by Carl Bradley (carlbrad@uky.edu), Plant Pathology,
UK Research and Education Center at Princeton, University of Kentucky

Objectives

The main objectives of this project are:
  • To engage Extension professionals, crop consultants and/or producers in using this component of the iPIPE, addressing significant arthropod, pathogen and weed pest of corn and - in particular  - utilizing IPM for the emerging disease, southern corn rust.
  • To engage and mentor undergraduate summer interns each year. 
  • To update and make available management guidelines for important pests in corn (including targeted new, foreign or emerging pests).
  • To carry out pest observations during the growing season, and provide commentary when appropriate.
  • To use iPiPE to drive stakeholder education programs for frequently misidentified and new pests if relevant.


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Situation

Southern rust (Puccinia polysora) is one of two different rust diseases of corn impacting large geographical areas in the Southern US and the Midwest. The other rust disease of corn is common rust (Puccinia sorghi).  Since nearly every corn hybrid grown is susceptible to southern rust, yield reductions can occur if infection takes place early enough in the season.  Late-planted corn fields are at the highest risk for yield losses associated with southern rust. Warm and humid conditions are most favorable for the southern rust pathogen infection and disease spread. F
oliar fungicides are the only management tool currently available.  
 

Important Pests

Southern rust (Puccinia polysora)

Southern Corn Rust
Southern corn rust (Puccinia polysora) Underw.
Yuan-Min Shen, Taichung District Agricultural
Research and Extension Station, Bugwood.org