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SDSU Research Shows Effects Of Volunteer Corn In Corn And Soybeans
In 2007, researchers at South Dakota State University indicated that volunteer corn is much less competitive in corn than soybean. The South Dakota study (Alms et al. 2007) evaluated the full season effect of a range of volunteer corn densities (800-14,000 plants/acre) on both corn and soybean and reported yield losses that ranged from 0% to 13% in corn and 0% to 54% in soybean.
Small red maggots under your soybean plants’ epidermis? We have answers.
In 2015, we received plant samples of soybean that had small red maggots under the epidermis. Now, in 2017, we are starting to receive reports of these same insects being found under the epidermis of soybean in different parts of South Dakota.
Crop Hour
SDSU Extension will deliver a series of virtual Crop Hour webinars starting January 9 through March 7, 2024, every Tuesday, Wednesday and Thursday from 10:00 a.m.-11:00 a.m. CST.
Fall is a Good Time to Test Your Soil for SCN
Is your yield monitor indicating low yielding areas in your soybean field? Soybean Cyst Nematode (SCN) could be the problem. Get to the root of the problem by testing your soil for the soybean cyst nematode. SCN management starts with a soil test to determine the presence or absence of this nematode in the soil. Absence may indicate either the SCN has not established in the field or could be present in non-detectable levels.
Forecasted Cold Temperatures Can Be Used To Cool Down Stored Grain
If temperatures are forecasted as being well below freezing, it would probably be a good time to start thinking about cooling stored grain. Cooling grain reduces the activity of stored grain insect pests and suppresses any mold growth that may otherwise occur.
Consider SCN Sampling This Spring
Soybean cyst nematode management starts with a soil test to determine the presence or absence of this nematode in the soil.
Gall Midge Larvae in Soybean Stems
Gall midge larvae were observed recently in soybean stems from a field in South Dakota. These insects were found under the epidermis of the stem that was slightly above the soil line.
Low-Level Aphid Populations Present in Wheat
Reports of aphid populations in wheat fields have been slowly increasing in the past week. Most of these populations are well below the economic threshold, but there is a potential for them to increase.
Scout Soybean for Black Cutworm Activity
Typically, we are concerned with black cutworm activity in corn fields. However, 2020 has been anything but a typical year and we are instead concerned with black cutworm activity in soybean fields.
Army Cutworm Moths Among the Recently Reported Western Bean Cutworm Moths
Last week, we published an article about the presence of western bean cutworm moths being very abundant throughout Central and Western South Dakota. However, when talking with an entomologist from a neighboring state, they suggested the moths could also be army cutworm moths.