Category Archives: Sorghum

Sorghum Hybrids with Tolerance to Sugarcane Aphid

Author: Scott Stewart, IPM Extension Specialist Comments Off on Sorghum Hybrids with Tolerance to Sugarcane Aphid

Linked below is a list of sorghum hybrids that have exhibited at least some tolerance to the sugarcane aphid. This was shared by Brent Bean of the Sorghum Checkoff program. To be included on this list, the seed company first must recommend the hybrid as having sugarcane aphid tolerance. Second, there must be independent data, usually from university or USDA trials, that confirm tolerance. Check the Sorghum Checkoff website under hybrid selection for updates to the list. It is important to note that some hybrids will have more tolerance than others. Also, just because a hybrid in on the list does not mean it is suitable for our geography.

2018 Sorghum Hybrids with SCA Tolerance

 

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UT Insect Management Guide for Field Crops

Author: Scott Stewart, IPM Extension Specialist Comments Off on UT Insect Management Guide for Field Crops

The 2018 Insect Control Recommendations for Field Crops (cotton, corn, soybean, wheat, sorghum, and pastures) can be found online on UTcrops.com.  Insect and disease management recommendations for cotton and soybean are also available on the mobile-friendly Field Guide website at http://guide.utcrops.com/.

Suggestions: Add the  UTcrops News Blog to your home screen for easy access to all these resources.

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UT Extension County Meeting Schedule, January/February

Author: Tyson Raper, Cotton & Small Grains Specialist Comments Off on UT Extension County Meeting Schedule, January/February

In addition to the East, Middle and West TN Grain Conferences and the Cotton Focus event, UT Extension is hosting a series of meetings to be held throughout the state to prepare growers for the upcoming season. These meetings will focus on variety selection, insect and plant disease management, weed management, and other current crop production topics.

Below is a list of the production meetings to be held in January and February. Please contact your local UT Extension office for more details on time and location. Continue reading

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Bollworm moth flight kick off

Author: Scott Stewart, IPM Extension Specialist Comments Off on Bollworm moth flight kick off

The bollworm moth flight is kicking off now in some areas. Of course this has implications for managing bollworm in cotton, soybean, and grain sorghum. Hot spots this week included traps located near Whiteville, Goldust, south Jackson, and Ridgley. Please keep in mind that local populations may vary considerably. You can check out this week catches at the link below. I’ve had another report of 100+ west of Covington in the Hatchie Bottoms in 3 nights.

http://www.utcrops.com/BlogStuff/2017MothTrappingData.pdf

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Sugarcane Aphids in Sorghum

Author: Scott Stewart, IPM Extension Specialist Comments Off on Sugarcane Aphids in Sorghum

Just a quick update … sugarcane aphids are now present statewide at some level, and there are some fields where treatment of grain, forage or sweet sorghum is needed. As for insecticide options, only Sivanto prime is labeled for use.  The label in grain and sweet sorghum allows application at rates up to 10.5 oz/acre, however, I suggest a rate of 4 oz/acre.  I’ve had excellent success with this rate.

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Moth traps and southwestern corn borers

Author: Scott Stewart, IPM Extension Specialist Comments Off on Moth traps and southwestern corn borers

As always, moth trapping data for the season can be found on the quick links menu (http://www.utcrops.com/BlogStuff/2017MothTrappingData.pdf). We are now catching a few more corn earworm (bollworm) moths, but nothing too startling. However, it is clear that the second generation moth flight for southwestern corn borer is underway, and we will catch even more moths next week. Keep in mind that there is a lot of variation among locations. It can be a waste of money to treat for southwestern corn borers based on trap catches that are not near your fields. You should be running a few Continue reading

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Section 18 (Emergency Exemption) Label for Sivanto Prime in Sweet Sorghum

Author: Scott Stewart, IPM Extension Specialist Comments Off on Section 18 (Emergency Exemption) Label for Sivanto Prime in Sweet Sorghum

The EPA has granted our request for an emergency exemption, allowing the use of Sivanto prime in sweet sorghum for the control of sugarcane aphids.  The section 18 label allows for use up to 10.5 oz/acre in a single application. However, testing in grain sorghum indicates 4-5 oz/acre provides excellent control. Application restrictions are Continue reading

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Fall Armyworms Look to Make and Early Start (again)

Author: Scott Stewart, IPM Extension Specialist Comments Off on Fall Armyworms Look to Make and Early Start (again)

It seems that fall armyworms have gotten a running start in recent years. This species does not overwinter in Tennessee, but it may survive warm winters in the extreme southern areas of coastal states during mild winters. It migrates into Tennessee each year. Often, fall armyworms don’t show in substantial numbers until late July or August. However, they are being found Continue reading

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