Effective Crop Rotation for Managing Palmer Pigweed - August 2011
[U of A University of Arkansas Division of Agriculture]
[Title Slide – Effective Crop Rotation for Managing Palmer Pigweed, August 2011. Your Arkansas Soybean Podcast, University of Arkansas Division of Agriculture, Arkansas Soybean Promotion Board Harvesting the Potential.]
[Dr. Bob Scott, Extension Weed Scientist] Corn can be an effective crop for managing glyphosate-resistant Palmer pigweed. It can be a very good rotational crop with soybeans. Herbicides such as Dual and Atrazine will provide very good early season control of palmer pigweed in corn.
[Video of a corn harvester harvesting corn in a field. Slide - Action must be taken to prevent pigweed from entering soils seed banks.] However, post-harvest, or at harvest, growers may find that pigweed has re-infested in many of these cornfields and action needs to be taken in order to prevent as much of this pigweed from going into the soil seed bank as possible.
This can include tillage, mechanical bush-hogging or shredding, or chemical control means with a product such as Gramoxone, we recommend at least 40 ounces of Gramoxone often time tank mix-Dual herbicide, to provide some residual control of pigweed. [Video of a corn harvester harvesting corn in a field. Slide - This can include: tillage, shredding, or chemical controlling (40 ounces Gramoxone Inteon® tank mixed with Dual.]
[Vide shows a corn field infested with pigweed.] There is plenty of time in Arkansas, between corn harvest and the first freeze to produce a second crop of pigweed, so care should be taken to prevent this from happening.
[Dr. Scott standing in a corn field with pigweeds. Slide - For more information contact your county agent, consult MP 44, go to www.uaex.edu.] For more information on managing the soil seed bank for pigweed contact your county agent, check out the recommendations in the MP44 or go to www.uaex.edu for more information.
[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 about soybean farming in Arkansas, contact your local county Extension office. [U of A University of Arkansas Division of Agriculture]