Tag Archives

Archive of posts published in the category: Fusarium

Sudden Death Syndrome in Delaware and Maryland

Over the past three weeks there have been increasing reports of soybean sudden death syndrome (SDS) in full season soybeans. SDS is one of the top ten most important diseases affecting soybeans, but is still a minor player in the mid-Atlantic.  Yield loss…


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 …


Stalk Rots in Corn

Stalk rots are one of the most frequent and damaging issues for corn production.  Corn plants produce sugars (carbon) through photosynthesis.  These sugars are used as energy for growth and tissue maintenance.  Extra sugars are stored as free sugars and starch in the…


Fungicides for ear rot

This season I have had several questions on  controlling ear rots in corn.  Ear rots are caused by several different fungal species.  The most common in our area are Diplodia, Gibberella, and Fusarium ear rots.  Others, such as Aspergillus, and Penicillium ear rots…


Soybean seed treatment efficacy tables available

Seedling diseases in soybeans are not often a huge issue in Delaware. but can be problematic in other parts of the Midatlantic.  One reason we do not often have major issues with seedling diseases of soybeans is the texture of our soils.  Most…


New work on chemical management of Fusarium wilt in watermelon

Fusarium wilt of watermelon, caused by Fusarium oxysporum f.sp. niveum (FON), is the most important and severe soilborne disease of watermelons.  As growers know, this plant pathogen, once established in a field, is battled yearly.  This is because the fungus produces special overwintering…


Fusarium ear and kernel rot in corn

There have been a few reports of ear rots in some fields in Delaware and Maryland. The most common ear rot this season is Fusarium ear rot, which we have observed in trials at the Carvel Research Center in Georgetown, Delaware, and in…


Rehashing FHB Fungicide Resistance

I had several calls this week about a recent article that went out pertaining to FHB resistance.  You may recall that I discussed this particular set of results and implications on December 3rd, 2013 in the Field Crops Disease Management Blog.  In case…


Scouting for diseases in small grains

Scouting fields for plant diseases is a simple way to maximize profits and yields over time.  Scouting allows growers to assess stand losses early and replant as needed, determine what diseases are active and their potential to damage the crop at key growth…


Fusarium head blight resistance to fungicides in the Northeast USA

Recent research shows that the pathogen causing Fusarium head blight on barley and wheat may be developing resistance to the triazole (DMI-FRAC group 3) fungicides, in particular, the active ingredient tebuconazole.  Before I discuss this research, I believe it is important to provide…