Glyphosate Resistance is Real

There are many things in life that have to be seen to be believed.  In the case of glyphosate resistance, it can be much easier to believe that weeds can’t or won’t become resistant to glyphosate if you haven’t seen it in your own fields.  In central Minnesota, Extension Agronomist Jeff Gunsolus is making sure growers have the opportunity to see glyphosate resistance first-hand.  He is traveling across the state with pots of giant ragweed, each of which was treated with varying levels of glyphosate, from the label rate to eight times the label rate.  According to Gunsolus, the pot containing the ragweed that was treated with eight times the label rate of glyphosate, although short and bushy, is still capable of producing seed.  To read the full article, click here.

Even for those who do believe glyphosate resistance is a real and growing threat, sometimes seeing it up close is the best way to prompt action. It is a great example for how easy it can be to spread knowledge about glyphosate resistance and start talking about strategies to combat it.

Have you been in fields with glyphosate resistance and seen it first-hand?  Did it cause you to change any management practices or adopt any resistance management strategies?  What do you think is the best way to educate about the reality of glyphosate resistance?  Share photos you have that show resistance by commenting with pictures.

Glyphosate-resistant marestail found in Illinois

Glyphosate-resistant giant ragweed found in Minnesota

Glyphosate-resistant waterhemp found in Nebraska