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corn field with sunrise in the background

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.

Woody looking zucchini plant.

What’s Killing My Zucchini and Squash Plants?

For many of us, this time of year is tough for our zucchini, squash and pumpkin plants. A close inspection of wilting plants may reveal a sawdust-like substance around the soil surface or on the base of the stem. When pushed, the plants typically break and reveal clear evidence of insect feeding through the stem.

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.

Brown beetle with hairy body with black mottled pattern.

What are Those Large Beetles in My Garden?

One of the insects that starts to attract attention this time of year is the bumble flower beetle.

Black beetles with orange or yellow spots feeding on a ripe tomato.

Insects are Invading My Produce!

Ripe fruit that has been injured as well as ground fall fruits often attract undesirable insects into an area.

Black beetles with heads as wide as thorax on brown soybean pods.

Broad-Headed Bugs in Soybean: Should You Be Worried?

This week we received a report of insects infesting a soybean field. However, they weren’t insects that we generally think of when the term "soybean insect pests" comes up.

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.

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.