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2019 Corn Fungicide Field Trials Summary

This document contains results of corn field trials conducted during the 2019 growing season to evaluate foliar fungicides to manage various corn diseases.

a map of the United States with different colors showing the precipitation outlook variations.

Fall Frost and September Climate Outlook for 2019

September 2019 has been pleasantly warmer than usual, and our crops need every bit of that warmth to reach maturity before our first frost arrives. Fortunately, temperatures have cooled slightly this week but just to near average for this time of year.

Two leaves of corn, one showing signs of Southern Rust, the other with Common Rust.

Southern Rust Developing Late in Corn

Southern rust was found in a few corn fields scouted last week. This rust is developing very late in the season and therefore its impact on corn yield will be minimal.

A patch of western wheatgrass with ergot fungus growing throughout.

Ergot in Western Wheatgrass and the Potential Effects for Winter Grazing

2019 has been a year fraught with challenges for ranchers across South Dakota. Abundant precipitation is usually a blessing, however, wet conditions coupled with a cool spring followed by warmer temperatures has caused another problem across the rangelands of South Dakota: ergot poisoning.

A field of green winter wheat emerging from a layer of light snow.

Climate Adaptability of Winter Wheat

For most of us, wheat is wheat. However, there is a distinct difference between spring and winter wheat, even though the vegetative characteristics of these two wheat types are very similar.

A map of South Dakota with several colored boxes indicating areas of increased flood risk. For a complete description, visit the National Weather Service website at: https://water.weather.gov/ahps2/long_range.php?wfo=fsd

Get to Know Your Local Emergency Management Director

The warmer weather and spring migration this March have us all thinking of better days ahead. Unfortunately, it also has us thinking about flooding again this spring.

Gibberella ear rot and Fusarium spp. symptoms on two corn ears.

Gibberella and Fusarium Ear Rots Developing in Corn

Corn ear rots are one of the last diseases to scout for in the corn growing season, and sometimes they are ignored or forgotten entirely. Ear rots can cause yield loss in the form of grain quality at harvest, but also cause losses during storage.

A producer loading a planter with fungicide-treated soybean seeds.

Pre-Plant Disease Management Considerations

If the forecast holds true, it looks like it is going to be another year of excessive soil moisture and possible flooding come this spring. The increased level of soil moisture has implications with regards to plant stand establishment as well as root rot and nematode infestations.

measuring honey using a tablespoon and filling a glass liquid measuring cup

iCook

Curriculum intended for out-of-school settings with the goal of promoting healthy lifestyles for 9- and 10-year-old youth and the adult who prepares their meals

green plant growing in a field with small grains growing on the ends

Proso Millet Trial Results

In 2020, proso millet trials were conducted in 1 location in South Dakota.