Author Archives

Archive of the posts written by author: Nathan Kleczewski.
Oct
15

Thank you mid-Atlantic!

This will be my final blog entry, as I will be leaving to start a new position with the faculty at the University of Illinois as their field crop plant pathologist in November.  I would like to sincerely thank the agricultural community in…

Oct
2

Small vs large plots for fungicide research in field crops

Over the last 10-15 years there has been much discussion in the agricultural realm about the utility of fungicide trials conducted on small plots, vs those on larger plots.  Small plots typically are 5-10’wide, and 20-50’ long, depending on the crop and study. …

Aug
23

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…

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…

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