What is in this article?:
- Georgia-based researcher looks at dealing with glyphosate-resistant pigweed with non-selective/wick applicators.
- Types of applicators discussed and critiqued.
- Report from the Pigposium.
Over the last two years, Prostko and colleagues have been “actively researching in the area of non-selective use. I thought there were a lot of things going on, and we didn’t have good science behind some of the recommendations being made. That’s how I got into it.
“So, we’ve looked at different applicators and I’ll share what we’ve found.”
• A traditional rope wick and gravity flow.
“This is one of the earliest designs and can be effective under certain situations. But things have come a long way since.”
• WickMaster Ropewick
“Another applicator we’ve looked at is the WickMaster Ropewick. This was made in Georgia and it’s a pressurized rope wick. Behind the apparatus there’s a small electrical pump that percolates the solution from the bottom to the top to keep the wicks more uniformly moist.”
• GrassWorks WeedWiper
“We probably have the most data on this particular implement. It’s a ‘carpet roller.’ Basically (it employs) a carpet-type material that turns in the opposite direction the tractor is traveling.”
• TopCrop Super Sponge Weed Wiper
This NSA is made by a company in Oregon and utilizes a sponge-like material to hold the herbicide solution.
“It was shipped in a box — the company wanted to make an implement that is easily shippable.
“We pulled it out of the box and kind of chuckled. It just didn’t look as stout as we might need.”
After testing the applicator, researchers found that “surprisingly, it turned out to be a very effective applicator. So, don’t always” go with your first impression.
• LMC-Cross Wick Bar
The LMC-Cross Wick Bar, made in Albany, Ga., “makes use of a pressurized system. The frame that holds the wick is sealed and it’s filled with air, which can be regulated. That keeps the wicks saturated to the point they need to be.”