UACES Facebook Effective Treatment of Pigweed in Soybean - July 8, 2009

Effective Treatment of Pigweed in Soybean - July 8, 2009

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Audio/Video     Script: 

Dr. Ken Smith
Weed Scientist

[Title Slide – Effective Treatment of Pigweed in Soybean, Dr. Ken Smith, Weed Scientist , Number 6 - July 8, 2009, Your Arkansas Soybean Podcast, University of Arkansas Division of Agriculture, Arkansas Soybean Promotion Board]

[Ken Smith standing in a soybean field] Hello I’m Ken Smith University of Arkansas Division of Agriculture Weed Scientist, here today in Marianna, Arkansas in a soybean research plot where we are looking at different technologies for control of Paler Amaranth [picture of pigweed] or Pigweed in soybean. [Ken Smith] I’m standing in the untreated check plot. As we can see, [pictures of pigweed] no herbicide has been applied, many Pigweeds other weeds or grasses, eucalyptus, etc. [Ken Smith] I’d like to walk through these with you on this podcast and show you some of our more effective treatment and some things that we can do to control Pigweed in soybeans in Arkansas.

[Picture of soybean field looking at plants and between rows, clean, no weeds present] In our first treatment plot here [Ken Smith] this is Authority first followed by one application of Ignite. And as we can see this is a very clean plot only a few grasses and a couple of nut sage plants that have escaped our application of Ignite. We made one application of Ignite twenty-two days after planting and a really clean plot, a nice plot here for residual herbicide.

Another of our pre-emerge herbicides, Prefix. Prefix is a combination of Reflex plus Dual a nice plot for us, [Picture of soybean field looking at plants and between rows, clean, no weeds present] one that had preformed very well for us in Arkansas soybeans here. [Ken Smith] Prefix followed by one application of Ignite, totally clean plot, very good application.

Our next plot is Authority first followed by Ignite. [Picture of soybean field looking at plants and between rows, clean, no weeds present] Again, a very clean plot with the exception of only one or two grass escapes. A very nice pre-emerge with Authority first, Authority plus First Rate. [Ken Smith] Authority first followed by Ignite, very nice plot.

And moving from our pre-emerge herbicides into a total post-program. Plant, no pre-emerge, come back this has had one application of Ignite twenty-two days after planting, a very common practice but not yet one that we will recommend and not one that is going to be effective because of the Pigweed [Picture of soybean field looking at plants and between rows, several weeds present] that are going to survive. [Ken Smith] Again too much weed pressure for the level of control that we’ve got. One application way too late.

Announcer

[Narrator] Your Arkansas Soybean Podcast is a production of the University of Arkansas Division of Agriculture and was funded in part by the Arkansas Soybean Promotion Board. For more information on soybean farming in Arkansas contact your local county Extension Office. [Title slide - For more information contact your local county Extension office. Your Arkansas Soybean Podcast, University of Arkansas Division of Agriculture, Arkansas Soybean Promotion Board].

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