Soybean Gall Midge

Five-state map showing counties with confirmed infestations of soybean gall midge

Mid-Season Update on Soybean Gall Midge

August 7, 2019
Soybean gall midge infestations have been confirmed in six new Nebraska counties since 2018.Treatment is not recommended at this time, but scouting and reporting infestations will continue to be important to plan for management next year.

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Counties documented as infested in 2018 (red) and 2019 (orange).
Figure 2. Counties documented as infested in 2018 (red) and 2019 (orange).

Soybean Gall Midge Adults Emerge from this Year’s Soybean Fields

July 17, 2019
A significant number of soybean gall midge adults have been collected from this year’s soybean fields in east-central and northeast Nebraska. Dead and dying plants have been observed near infested sites in both northeast and east central Nebraska.

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Figure 1. Soybean plant showing signs of wilting from soybean gall midge infestation.
Figure 1. Soybean plant showing signs of wilting from soybean gall midge infestation. (Photo by Justin McMechan)

Soybean Gall Midge: New Counties Infested and Second Generation Adults Emerging

July 8, 2019
Since June 30, low levels of adult emergence have been observed from east-central and northeast Nebraska counties from last year’s soybean fields. On July 2 and July 4 adults were found emerging from this year's soybeans in east-central Nebraska.

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Soybean gall midge larvae inside a soybean stem
Soybean gall midge larvae inside a soybean stem

Soybean Gall Midge Larvae Found in Soybean Plants

June 29, 2019
In Nebraska, soybean gall midge larval injury to soybean has been found in most areas where adult soybean gall midge activity occurred over the past two weeks It is unlikely foliar insecticides will affect this insect.

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Soybean gall midge larvae inside a soybean stem
Soybean gall midge larvae inside a soybean stem

Soybean Gall Midge: Management Window Changing for Nebraska Growers

June 26, 2019
Soybean gall midge larvae found feeding within soybean plants in east central Nebraska mean foliar applications will likely no longer be effective. In northeast Nebraska, however, they may still be effective for a short time.

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Soybean Gall Midge Emergence Update in Nebraska

June 21, 2019
Soybean gall midge numbers continue to increase at a number of monitoring sites in the state.

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Figure 1. Male soybean gall midge (left) and female soybean gall midge (right). Female has a point abdomen due to its ovipositor whereas males have a clasping organ at the end of the abdomen. Males are of no threat to this year’s soybean crop.
Figure 1. Male soybean gall midge (left) and female soybean gall midge (right). Female has a point abdomen due to its ovipositor whereas males have a clasping organ at the end of the abdomen. Males are of no threat to this year’s soybean crop.

Soybean Gall Midge Emergence Continues in Nebraska

June 18, 2019
Emergence of soybean gall midge continues to increase in eastern Nebraska. Traps are being monitored daily and will be reported to allow growers to plan insecticide application for highest efficacy. (June 18, 2019)

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Soybean gall midge adult

Emergence of Soybean Gall Midge in Southern Cass County, NE

June 15, 2019
Soybean gall midge adults were collected June 14 and 15 in Cass County, but have not yet been found elsewhere in Nebraska traps. This article addresses when and where treatment is warranted. (June 15, 2019)

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