About 67 percent of dry edible bean growers in North Dakota and Minnesota plow their soybean fields at some point, according to a survey of farmers, says Joe Eakley of North Dakota State University’s Weed Control Center. emergence or post-emergence experts.
Roll out about halfway before the grains appear. Speaking at Bean Day 2024, he said some beans roll before they are planted, and about 5% roll after the beans are established.
“Every year I get a question. You know, basically, when can I roll as it relates to my application of residual herbicide? Is there any advantage to spraying the herbicide first and then rolling, or spraying the herbicide first?” and then roll it in?” – he said.
The rotation pushes the rocks down and away from the harvester, but the action also causes compaction of the soil, like a “tire track incident,” Yackley said.
“Where there is some compaction, we tend to experience more weed pressure,” he explains. “So wheel rolling looks something like this. So we really wanted to look at the effect of rolling on weed pressure in the field, and then look again at the sequence of rolling versus applying residual herbicide.”
Eakley and his team conducted the first “just for fun” tests on soybeans, but he says the moral of the story is the same as what they later discovered in tests with edible beans.
“Where we don’t have rollers or herbicides, we have about 100 grasses and 50 deciduous trees per square yard,” he said of the first trial in 2022. “Where we rolled, we actually had double the grass pressure and triple the broadleaf pressure.” “
Eakley’s advice was simple: “Basically, if you’re going to be prepared and act, whatever works best logistically, we don’t see any difference in time.”
He goes on to explain that rolling and applying residual herbicide at the same time means more weeds emerge but are kept under control.
“That means we can kill more weeds this way,” he said. “So one of my takeaways is, if we’re going to get going, make sure we have some backlog of bids, which could be beneficial for us in the long run.”
“We don’t really see much of a postemergence impact on weed control within the crop itself,” he said. “So it looks good to us too.”
Post time: Mar-25-2024