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Purdue Field Crop Pathology

To Understand the Future Risk on Your Farm Now is Time to Scout for Tar Spot

By Darcy Telenko | October 1, 2019 | 0 Comments

Tar spot of corn has been a concern this season after the localized epidemics we experienced last year in Indiana. At this point in the field season, there are a number of areas with active tar spot.We again would like…

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Mid-Season Field Crop Update for Indiana

By Darcy Telenko | August 15, 2019 | 0 Comments

Corn: Southern Rust is now confirmed in 11 counties in Indiana (figure 1). These include Daviess, Dubois, Gibson, Henry, Knox, Martin, Morgan, Posey, Spencer, Vigo and Washington counties and suspected in Sullivan and Putnam. Keep scouting and if you suspect…

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Instructions to Help Collect Foliar Corn Disease Samples in Indiana

By Darcy Telenko | July 31, 2019 | 0 Comments

We are tracking the movement of both southern corn rust and tar spot in Indiana. In order for an official designation of the disease in a county – myself or the Purdue Plant Pest Diagnostic Lab (PPDL) needs a physical…

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Southern Corn Rust and Tar Spot Update in Indiana: We need your help!

By Darcy Telenko | July 25, 2019 | 0 Comments

Southern Corn Rust: Southern corn rust was officially confirmed in Posey County this week. We currently have two positive counties and one probable in Indiana.  We need your help – if you are out scouting field in the surrounding counties…

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Foliar Fungicide Decisions for Late Planted Crops

By Darcy Telenko | July 18, 2019 | 0 Comments

A new article was just released to answer questions about making a decision to use a foliar fungicide in late planted corn and soybeans. In Indiana it will be very important to continue to monitor your crop and understand the…

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Update on Corn Diseases in Indiana: Part 2 Gray Leaf Spot and Southern Rust

By Darcy Telenko | July 17, 2019 | 0 Comments

Gray leaf spot is also active in the lower canopy at multiple sites across the state. The lesions are light tan in color and generally narrow and rectangular, and can be as long as 2 inches. As the lesions age…

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Tar Spot
Tar Spot
Grey Leaf Spot
Grey Leaf Spot
Frogeye Leaf Spot
Frogeye Leaf Spot
Sudden Death Syndrome
Sudden Death Syndrome

About Us

Our Field Crop Pathology Team is responsible for developing and executing an Extension programs that educates agribusiness clientele on the importance of effective and economical disease management for agronomic crops. Field crop diseases can significantly impact the health of these commodities, and result in losses in profitability. Additionally, over 20 diseases of corn, soybean, and wheat may affect crops in a single growing season, making disease identification and management a primary concern.

The program is focused on recognizing and understanding new diseases and their potential impact on Indiana agriculture, and quickly and effectively distributing information in the event of a disease threat to Indiana crop production.

2019 Tar Spot Distribution Map - Indiana

2019 Southern Rust Distribution Map - Indiana