Category Archives: Insects

Shifting Gears for Plant Bugs

Author: Scott Stewart, IPM Extension Specialist No Comments

We need to make some adjustment in managing plant bugs as we near bloom. Much of the cotton is at or beyond the third week of squaring, and thus, the suggested sweep net threshold can be relaxed to 15 bugs/100 sweeps. However, you should be more aggressive in situations where overall square retention is at or below 80%. Continue reading

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Sugarcane Aphid Update

Author: Scott Stewart, IPM Extension Specialist No Comments

Grain sorghum acres are way down this year, but those who are growing sorghum should start scouting for sugarcane aphids now. Based on my counterparts reports in more southern states, I suspect there are already low numbers of aphids in some fields. This pest thrives in hot weather, so populations can spread and build quickly. Serious infestations that go untreated can cause catastrophic yield loss. Continue reading

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Critter Calls

Author: Scott Stewart, IPM Extension Specialist No Comments

Threecornered alfalfa hoppers, snails, Japanese beetles, and plant bugs … should you be worried? I’ve had a variety of calls this week, but the most frequent call has been about  Continue reading

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Threecornered Alfalfa Hopper on Soybean.

Author: Scott Stewart, IPM Extension Specialist Comments Off on Threecornered Alfalfa Hopper on Soybean.
TCAH adult
TCAH adult

Recent research in the Mid-South has convinced me that threecornered alfalfa hopper (TCAH) is almost exclusively a pest of only small soybeans. We’ve had a relatively mild winter. Tennessee is on the northern edge of threecornered alfalfa hopper home range, and warm winters generally means higher populations. That appears to be the case in 2016. Late planted soybean such as Continue reading

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Dates for Soybean Scout Schools in July

Author: Scott Stewart, IPM Extension Specialist Comments Off on Dates for Soybean Scout Schools in July

New UT EXTENSION logoUT’s Soybean Scout Schools are scheduled in July for the dates and locations below. The programs are supported by the Tennessee Soybean Promotion Board and include basic information about crop development, scouting procedures, and Continue reading

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Cotton Insect Update (mostly thrips)

Author: Scott Stewart, IPM Extension Specialist Comments Off on Cotton Insect Update (mostly thrips)

Other than a few calls about slugs, thrips are the primary pest of concern. Although there seems to be a lot of excitement out there, I’m not seeing anything too out of the ordinary. Thrips populations seemed to have peaked, and Continue reading

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