Category Archives: Sorghum

Private Applicator Certification Deadline Approaching

Author: Scott Stewart, IPM Extension Specialist Comments Off

One of our County Agents, Walter Battle, had the good idea of asking me to post this information.

Producers as the 2014 harvest continues, be mindful that on October 21st, Tennessee Department of Agriculture Private Applicator Certifications will expire. With that in mind, many University of Tennessee Extension offices are providing re-certification trainings. Call or check with your Continue reading

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Fall Armyworm Onslaught Continues

Author: Scott Stewart, IPM Extension Specialist Comments Off

Fall armyworms attack a wide range of grasses and other crops. Outbreaks have been reported on soybeans, sorghum, pastures and several other crops for over a month. We are having a biblical year with fall armyworm, especially in pastures and lawns. However, many are also wandering into the edges of soybean fields. My colleague, Dr. Frank Hale, recently sent the following information. Continue reading

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Updated Sugarcane Aphid Distribution

Author: Scott Stewart, IPM Extension Specialist Comments Off

Below is the updated, known distribution of sugarcane aphids in 2014, including confirmed finds on sorghum in Tennessee. This aphid is certainly present in at least low numbers in other areas. The second map shows the distribution of this invasive pest in 2013, showing the impressive spread Continue reading

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Moth Trapping Report (Corn Earworm are Flying)

Author: Scott Stewart, IPM Extension Specialist Comments Off

This will be the last week that moth trapping data will be reported (link here).  Results from last week indicate the the corn earworm (bollworm) flight has finally kicked off, but trap catches last week varied considerably from 2 – 213 moths per trap.  The hot spots appear to be Continue reading

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Grain Sorghum Harvest Aid Options

Author: Angela McClure, Extension Corn and Soybean Specialist Comments Off

Desiccant options for grain sorghum are more limited than other crops.  Basically we are limited to glyphosate or sodium chlorate.  Aim herbicide can be included with another material where morningglory vines are dense enough to interfere with the combine.  Gramoxone is not labeled for desiccation of grain sorghum.

Glyphosate products:  apply only after seed have reached 30% moisture content or less and harvest is at least 7 days out.  Rates are from 32 oz to 64 oz/A in 10 to 20 gallons water per acre by ground or 3 to 10 gallons water per acre by air.  Glyphosate is a slow acting material and has not been shown to measurably reduce seed moisture in small plot research.  It should not be used on sorghum grown for seed production.

Sodium chlorate products:  apply 7 to 10 days before harvest at labeled rate.  There are a number of products available that have different rates of active ingredient.  Consider using the higher recommended rate if applying when weather is cloudy and/or damp.

 

 

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