Telenko Lab

Promoting sustainable and economically sound disease management in Indiana field crops

Telenko Lab

Our research program focuses on promoting sustainable and economically sound disease management practices in Indiana field crops. We have an interdisciplinary plant pathology research and extension program involved in studying the biology and management of soilborne and foliar pathogens of agronomic crops.

CONTACT US

Department of Botany and Plant Pathology
dtelenko@purdue.edu
915 W. State Street
Lilly Hall Room 1-317
West Lafayette, IN 47907
Tel: 765-496-5168

FEATURED RESEARCH

Update – Management of Sclerotinia sclerotiorum in soybean using the biofungicides Coniothyrium minitans and Bacillus amyloliquefaciens

May 5, 2022

Two biofungicides, Coniothyrium minitans and Bacillus amyloliquefaciens, are currently available and labeled to limit or suppress S. sclerotiorum in soybean. These biofungicides can be applied in place of synthetic foliar fungicides to provide an alternative mode of action for the control of Sclerotinia stem rot. However, limited information is available regarding the efficacy of C.…

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2022 Spring Poster Presentations

April 29, 2022

Great representation of our field crop pathology graduate research projects at the Purdue Ag and Engineering Convergence Networking Event.

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Statewide survey of Quinone Outside Inhibitor (QoI) fungicide resistant populations of frogeye leaf spot (Cercopsora sojina) in Indiana 

April 29, 2022

By Kaitlin Waibel Quinone outside Inhibitor (QoI) fungicides are effective against a wide range of pathogens on many crop species including C. Sojina in soybeans. QoI fungicides are at high risk of developing resistance. Frogeye leaf spot has become a key disease in the Midwest as a consequence of warmer winter temperatures, usage of susceptible…

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Statewide survey of tar spot (Phyllachora maydis) distribution and intensity in Indiana 

April 29, 2022

By Kaitlin Waibel In 2018, tar spot was the third highest yield reducing disease of corn despite only being confirmed in only six states, but in 2021, another tar spot epidemic resulted in higher yield losses than any other corn disease in the United States and Ontario, Canada. Even within Indiana, the number of counties…

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Field scale fungicide timing and efficacy trials for corn and soybean diseases in Indiana 

April 29, 2022

By Kaitlin Waibel Farmers use financial risk assessment to justify foliar fungicide applications, but yield losses and pesticide overuse can result from producers applying using inefficient timing, choosing ineffective fungicide products, or spraying in the absence of disease. It is generally more cost effective to apply a single application of fungicide than two or three…

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Graduate Ag Research Spotlight – Tiffanna Ross

October 1, 2020

https://ag.purdue.edu/arge/Pages/Spotlight-Ross.aspx

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Managing corn tar spot in northern Indiana.

April 27, 2020

Tar spot is a foliar disease of corn that has emerged as a dire economic threat to the United States Corn Belt. Tar spot is caused by an obligate fungal pathogen Phyllachora maydis which reduces corn grain yield and quality. The economic impact of tar spot in the U.S. is predicted at $231 Bil reduction in…

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Soybean Sudden Death Syndrome (SDS): Integrated Management Tactics for SDS, FvTox1 Expression and SDS Hyperspectral Sensing

April 27, 2020

Soybean Sudden death syndrome (SDS) is known to be one of the most yield limiting soybean diseases in the United States. SDS is caused by a soil borne pathogen (F. virguliforme) which results in a two-stage symptom development: i. root necrosis followed by ii. foliar symptoms of interveinal chlorosis and necrosis, that occurs late in…

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Quinone outside inhibitors (QoI) fungicide resistance in frogeye leaf spot of soybean in Indiana.

April 24, 2020

Frogeye leaf spot (FLS) is caused by the fungal pathogen Cercospora sojina Hara., and reduces soybean yields in most of the major soybean-producing countries in the world. FLS is commonly found in hot and humid regions of southern states in the United States. However, this disease has recently become a key disease in Indiana and…

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Management of Sclerotinia sclerotiorum in soybean using the biofungicides Coniothyrium minitans and Bacillus amyloliquefaciens

April 22, 2020

Sclerotinia sclerotiorum is a soilborne pathogen of soybean that causes Sclerotinia stem rot, alternatively called white mold. Sclerotinia stem rot can cause significant yield losses under cool and wet environmental conditions. Current management practices include selecting a resistant variety, increasing row spacing, decreasing planting populations, and rotating to a non-host crop as well as the…

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2020 Field Crops Pathology Research Activities

April 22, 2020

Welcome to the Telenko Lab Research Blog! We hope to use this space to provide updates on all the exciting research our team is undertaking. Year two of our field season is off to an interesting start working under new COVID-19 guidelines. Our lab is involved with a wide assortment of critical agricultural research on…

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Phyllachora maydis, population structure and basis of emergence and spread in U.S. Corn production

April 20, 2020

Phyllachora maydis, a fungal obligate pathogen is the causal agent of tar spot of corn. Tar spot of corn; a foliar disease reduces corn stover, stalk, silage, grain yield, and quality. P. maydis is endemic to Latin America where it was first documented in Mexico in 1904. P. maydis has been restricted there for hundreds of…

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