|Blog written by Burrus, co-owner, Tim Greene|
Glyphosate resistant weeds are becoming a painful reality for many growers. Several species of weeds have evolved to form resistance to the common glyphosate herbicide. Many growers use the term “Roundup resistant” when referring to this not so uncommon phenomenon. Glyphosate was once heralded to be immune from resistance issues. The thought was it was so effective in killing so many different types of weed species that no one would need to worry. Over time some growers abused the simplicity and efficiency the product offered and now the effectiveness has started to wane. Growers are now more interested than ever in other alternatives to help keep their bean fields weed free.
Herbicide resistant beans like LibertyLink® beans have started to gain considerable marketshare in many areas. There are two other new herbicide resistant technologie that will soon be emerging into the marketplace. 2,4-D resistant beans and dicamba resistant beans will be entering the market. These two “old faithful” traits (both have been in use for 40 years) will be stacked with glyphosate tolerance in new premix formulations. The 2,4-D platform of herbicide resistance will be part of Dow AgroScience’s Enlist™ Weed Control System. Roundup Ready® 2 Xtend™ will be the name of the dicamba resistant beans that are coming from Monsanto. The technology is a collaborative effort between Monsanto and BASF. Another herbicide trait in the pipeline that will increase the options for multiple modes of action. Syngenta and Bayer CropScience are collaborating on herbicide resistance and crops tolerant of even more herbicides are getting closer to market, too. Enlist E3™ is another new option coming in the pipeline. The Enlist E3™ is a collaboration between MS Technologies and Dow AgroScience that will confer tolerance to the new 2,4-D choline, glyphosate and glufosinate according to the MS Technologies website.
Growers are searching for ways to change how they handle their weed control management. Experts agree that growers should examine all options for weed control including the use of non-chemical methods. Considerations should include options such as crop rotation or tillage. It is believed that growers should not just depend on a two herbicide blend. Both new blends are designed to decrease volatility and increase the flexibility growers have for application.New products will help with control options but they won’t necessarily provide the “silver bullet” for eternity. The new products will be a management tool in the fight against weed resistance. Growers will continue to be advised to rotate chemicals and include non- chemical methods whenever possible. If you are battling some weed resistance issues on your farm, talk to your Burrus or Hughes Account Manager to discuss all of the management options that are available to you.