Author Archives

Archive of the posts written by author: Nathan Kleczewski.
Aug
5

Stem Canker on Soybeans

Stem canker is a disease that has been observed at increasing levels in many regions where soybeans are produced.  In Delaware and Maryland we typically observe both Northern and Southern stem canker.  Although different in some aspects, their overall impacts and management are…

Jul
31

Southern Blight in Soybeans

Southern blight of soybeans, caused by the soilborne fungus Sclerotium rolfsii, is increasing in areas of Virginia and may be observed in some areas of Delaware and Maryland.  This is not the same as the white mold pathogen Sclerotinia sclerotiorum, although it is…

Jul
7

Foliar Fungicides for Corn- Yes or No

We are entering that time of year when growers start to think about fungicides for corn.  Depending on who you speak to you will hear that they range from being 100% necessary to 100% unneeded.  In reality, it’s likely somewhere in between.  Before…

Jun
24

Bacterial Stalk Rot on Sweet Corn

With the recent stretch of hot, dry weather, many producers have begun to irrigate their sweet corn.  Consequently, there have been reports of bacterial stalk rot in some areas where surface water or ponds have been used as water sources.  Bacterial stalk rot,…

Jun
8

Seedling diseases of soybeans

Soybeans grown in Delaware and Maryland can succumb to various diseases early in the growing season.  These diseases typically are favored by conditions that slow soybean emergence and favor pathogen growth, such as wet weather immediately following planting.   There are several pathogens that…

May
28

Hail damage and fungicides in field crops

With recent hail in the region, some growers may be wondering about the use of certain fungicides (specifically some containing strobilurin active ingredients (QoI FRAC group 11) for the mitigation of plant stress or to protect the plant against wounded plant tissues. Some…

May
5

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…

Apr
27

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…

Apr
19

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…

Mar
30

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…

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