Category Archives: Sorghum

Application Time of Day Effects Gramoxone

Author: Garret Montgomery 2 Comments

With planting hopefully right around the corner, many people are thinking about using Gramoxone (paraquat) as a last minute burndown for its effectiveness and lack of replant interval.  Gramoxone is a very good broad spectrum herbicide that is “money” on many winter annual broadleaf weeds and also quite good on poa.  On the main winter annual weed horseweed (marestail) though, control can range from 30 to 90%.  The question is why?  So we conducted research this spring to see if time of day Gramoxone is applied has an effect on horseweed control. Continue reading

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Common Herbicides Used in Soybean That Could Carryover into Grain Sorghum

Author: Larry Steckel, Extension Weed Specialist Comments Off

I have written a couple of pieces on fomesafen carryover into grain sorghum. I emphasized fomesafen because it is used on almost all soybean acres in Tennessee.  However, I would be remiss if I did not add that some other herbicides commonly used in soybean have lengthy plant backs to grain sorghum as well.  Continue reading

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Grain Sorghum as Alternative in 2015

Author: Angela McClure, Extension Corn and Soybean Specialist 2 Comments

I have had a number of calls about grain sorghum this week as lower production costs compared to corn and the latest increased premium offered for Memphis delivery have driven up interest in this crop.  Check out our newest regional sorghum production guide at utcrops.com.  Some pre-plant reminders are included about sorghum for those who have not grown sorghum lately (or ever): Continue reading

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Does Adding a Residual to Burndown Make Sense?

Author: Larry Steckel, Extension Weed Specialist Comments Off

When planning your burndown does a residual make sense?  That depends on if a follow-up burndown is planned at planting, the expected planting date and what is the intended crop. If the expected planting date is 3 weeks or so off and the plan is to burndown with something at planting then a residual in with the burndown now is probably not warranted. However, if the intended planting date is more than 30 days away, then a residual can provide the advantage of not having a big, grown up mess to have to plant into. Continue reading

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