Be on Lookout for Stink Bugs in Soybean in 2025

Dec 19, 2024

Missouri soybean farmers should be on the lookout for several species of stink bugs in 2025, says University of Missouri Extension state crops entomologist Ivair Valmorbida.

According to a 2024 survey, green stink bug was the most prevalent in Missouri soybean crops, accounting for a little more than 70% of the stink bugs. The one-spotted stink bug and brown stink bug are also present in Missouri crops, and they are similar in appearance. All overwinter as adults and emerge in the spring when temperatures and day length increase.

Stink bugs damage crops with their piercing mouthparts. They feed on blooms, pods and developing seeds within the pods. They can cause significant yield losses and reduce seed quality.

They vary in size and shape, but they are generally described as having shield-shaped bodies. Adult green stink bugs are usually light green. Eggs are barrel-shaped, change from light green to yellow and are usually found on the underside of the leaves.

Stink bugs move from field edges, and numbers increase during soybean reproductive growth stages. Females lay their eggs in masses; after hatching, young nymphs remain in the same area during their first instars. By fourth and fifth instars and adult stages, they move throughout soybean fields.

Valmorbida says insecticide application is warranted only when numbers and damage exceed thresholds. Based on sweep net samples, the threshold for grain soybean is 0.4 bugs per sweep (40 in 100 sweeps); for seed beans, it is 0.2 bugs per sweep (20 in 100 sweeps).

Valmorbida recommends weekly scouting when soybean begin to bloom. Some guidelines:

• Break large fields into units of 40-50 acres. Consider soil type, history of pest incidence and previous crop.

• Assess the whole field by walking in a U, X or W pattern. Avoid good or bad spots in the field that may not be representative of the overall field.

• Start sampling at a different location each time you scout.

• Avoid sampling only at field edges.

• If you find an infested area, try to determine whether it is isolated or widespread.

MU’s Pest Monitoring Network offers free text alerts to notify farmers when insects are active in specific locations. To sign up, go to https://ipm.missouri.edu/pestmonitoring or email ipm@missouri.edu.

Photos

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https://extension.missouri.edu/sites/default/files/wysiwyg/Extensiondata/NewsAdmin/Photos/2024/1000002717.jpeg

https://extension.missouri.edu/sites/default/files/wysiwyg/Extensiondata/NewsAdmin/Photos/2024/1000082575.jpeg

Stink bugs vary in size and shape, but they are generally described as having shield-shaped bodies. Adult green stink bugs are usually light green. The barrel-shaped eggs change from light green to yellow and are usually found on the underside of the leaves. They can cause significant yield losses and reduce seed quality in soybean. Photos by Ivair Valmorbida, University of Missouri Extension crops entomologist.

Source : missouri.edu

Video: Four Great Reasons to Love Canola

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Canola oil is your local choice for oil. Grown right here in Canada! Canola oil is the best blend of fats for good health. Canola oil is low in saturated fat and contains zero trans fat and cholesterol. Canola oil is a source of omega-6 which is important for the brain and essential for the growth and development of infants. Canola oil is also high in omega-3 fat which helps to protect against heart attacks and strokes. Canola oil is high in monounsaturated fats, which reduce the risk of coronary heart disease.

** When and where can I use canola oil? **

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Generally speaking, canola oil has a very mild or neutral flavour making it an excellent carrier for other ingredients in your dish. It allows for seasonings to shine and for key ingredients to be showcased. However, if you are looking for an oil to pack a punch you should try out a cold-pressed canola oil. Cold-pressed canola oil packs flavour and is excellent for bread dips, salad dressings or a quick drizzle to finish a dish for a great presentation.

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Did you know you can make some of your favourite recipes even healthier by replacing solid fats with canola oil? Not only do you make the type of fat in the recipe healthier you also decrease the caloric content of the recipe because you will decrease the amount of fat needed. Basically, anytime a recipe calls for a solid fat to be melted you can replace it with canola oil.