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Management Plan Crucial when fighting Resistant Weeds

The last few years it’s been all out war against resistant weeds, and Dr. Alan York, Professor Emeritus with NC State’s Weed Science Department says the work farmers have done thus are is admirable, but its way too early to quit:

“Everyone knows we have resistance problems. Most of our people have done a really good job of trying to take it seriously and get on top of the situation. We need to not let up on this effort.”

In combating resistant weeds, York says diversity is the name of the game:

“Diversity can come from a lot of places. If tillage cultivation fits in somewhere, than that puts more diversity into the program. Crop rotation lets you diversity your herbicide programs so you are not always relying on the same thing. Cover crops, if they fit into your system, can be a major benefit.”

And part of the success is to go into the season with a weed management plan in place says York:

“When it comes to actually planning the herbicide program, we want diversity in those as well. Regardless of what the crop is, we are saying to start off with something residual, either pre-plant or at planting.”

In the battle against resistant weeds, it’s been learned that timeliness of post emergent herbicide application is crucial explains York:

“A lot of our guys still need to work on the timeliness of their post, somewhere 18-21 days after you drop the seed in the ground its good to look at the field, because whatever escaped the pre, they are going to be ready to treat. For palmer if we are looking at an alternative to glyphosate or something to mix, then we need to get to it when its very small because it grows so fast, so timeliness is something we really need to tighten up on.”

Dr. Alan York, NC State Weed Science Professor Emeritus. is dedicated to serving the agricultural industry in the Carolinas and Virginia with the latest ag news, exclusive regional weather station readings, and key crop market information. The website is a companion of the Southern Farm Network, provider of daily agricultural radio programming to the Carolinas since 1974. presents radio programs, interviews and news relevant to crop and livestock production and research throughout the mid-Atlantic agricultural community.