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Archive of the posts written by author: Nathan Kleczewski.

Fungicide Application Window for Fusarium Head Blight Suppression

Heavy rains coupled with high winds made it difficult for growers in Delaware and Maryland to apply fungicides for Fusarium head blight (FHB) suppression.  There has been discussion about waiting until this current weather front passes to make applications.  Fungicide applications for FHB…


Soybean Losses Due to Diseases

Diseases significantly impact soybean production throughout the United States.  In Delaware, diseases such as Soybean Cyst Nematode, Root Knot Nematode, and stem canker can cause significant annual yield losses.  Plant pathologists throughout the United States collect disease loss data each year.  This data…


Time to sign up for Fusarium Head Blight Prediction Updates

Now is the time to ensure that you are signed up for alerts from the Fusarium Head Blight Prediction Center, and you should be checking the map every 2-3 days as plants approach flowering to determine your potential need to apply a fungicide…


Stripe Rust Present in Virginia

Stripe rust has been confirmed in Shirley wheat in the Southern part of the Eastern shore of VA.  Shirley is highly susceptible to stripe rust.  Growers in MD and DE should check their wheat resistance ratings for stripe rust and plan on scouting…


Stripe Rust Present in North Carolina

Stripe rust was recently confirmed in wheat in Robeson County, NC on the boarder with South Carolina.  The disease was found in a wheat trial on a susceptible variety, SS 8404. Stripe rust is an obligate pathogen requiring cool, moist weather to infect…


New Factsheet of Barley Yellow Dwarf and Aphid Management in DE Available

Barley yellow dwarf is the most prevalent virus encountered in small grain production.  Last year, we composed a new factsheet on this virus and how to manage it and its vector, the aphid.  The factsheet can be found under the small grains tab…


Fungicide Profitability in Mid-Atlantic Wheat

A commonly asked question posed by many growers is, “Does it pay to apply a fungicide to my wheat?”  This question is particularly important with recent reductions in commodity prices.  Fungicide applications are useful in protecting wheat from fungal diseases affecting the foliage…


Prothioconazole vs Thiophanate-Methyl for Fusarium wilt control in watermelon

In a past article, I discussed recent research that examined drip application of prothioconazole and thiophanate-methyl for suppressing Fusarium wilt, caused by Fusarium oxysporium f.sp. niveum (FON). Ultimately, this research indicates that application of these fungicides can suppress FON, although they are not …


What is CRISPR?

You may be hearing a lot about a new molecular technology called CRISPR in the popular press.  This tool offers many opportunities, from curing debilitating diseases, to improving disease resistance of crops.  To learn more about CRISPR and it’s potential for disease management…


2017 Nematode Assay Service Note

The University of Delaware will not offer an open nematode assay service in 2017.  Growers and other professionals with urgent issues can contact their local extension agriculture agent or Dr. Nathan Kleczewski at 302-300-6962 or for assistance with nematode identification, enumeration, and…


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