Category Archives: Insects

Wheat, Aphids, and Barley Yellow Dwarf Virus

Author: Scott Stewart, IPM Extension Specialist No Comments

It’s the time of year.  A late winter insecticide application for the control of aphids in wheat often results in a yield increase.  I typically recommend an application before the end of the month. UT data suggests this reduces or delays barley yellow dwarf virus. A late winter insecticide application  Continue reading

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Upcoming Crop Production Meetings

Author: Scott Stewart, IPM Extension Specialist Comments Off on Upcoming Crop Production Meetings

Meeting season is in full swing, and there are several educational opportunities fast approaching (see below). Pesticide re-certification points and CCA points will be available at all these meeting. Additional details will be provided soon! Continue reading

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Weed and Insect Control Recommendations Now Available

Author: Scott Stewart, IPM Extension Specialist Comments Off on Weed and Insect Control Recommendations Now Available

The 2016 Weed Control Manual for Tennessee (PB1580) and the 2016 Insect Control Recommendations for Field Crops (PB1768) are now available online.  As always, hard copies will be made available at various county and state production meetings and at Extension county offices.  But they are always a couple of clicks away at UTcrops.com.

Insect Control Guide
Insect Control Guide
Weed Control Manual
Weed Control Manual
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New Sorghum Insect Scouting Video

Author: Scott Stewart, IPM Extension Specialist Comments Off on New Sorghum Insect Scouting Video

A new, 12-minute video on the scouting of common insect pests in sorghum is now available at UTcrops.com, or you can directly link to the video below.  Thanks to UT’s own Ginger Rowsey for her hard work putting this together.

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Wheat insecticide seed treatments: Are you getting what you thought?

Author: Scott Stewart, IPM Extension Specialist Comments Off on Wheat insecticide seed treatments: Are you getting what you thought?

In wheat, rates of insecticides labeled for seed treatment vary considerably. Gaucho 600, NipsIt Inside, and Cruiser are recommended at rates of about 0.8 – 1.3 oz of product per hundred weight of seed when used for the control of aphids (and better protection from the barley yellow dwarf virus they transmit). My experience is Continue reading

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Stink Bugs and Soybean Aphids in Late Soybean

Author: Scott Stewart, IPM Extension Specialist Comments Off on Stink Bugs and Soybean Aphids in Late Soybean

Soybean Aphids are occurring in some very late soybean fields in the northwest corner of West Tennessee. I’ve had several reports from Dyer and Lake Counties. This is the first time we’ve seen significant soybean aphid numbers in this part of the state. In some years, we’ve seen treatment levels in Middle Tennessee. This invasive pest drifts down from the north and Continue reading

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Soybean and Sorghum

Author: Scott Stewart, IPM Extension Specialist Comments Off on Soybean and Sorghum

Soybean

Although stink bug populations remain generally light, there are now some reports of populations exceeding the treatment threshold of 9 per 25 sweeps. Remember you should probably double this threshold once a field reaches R6. Calls are also trickling in about defoliation Continue reading

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