With a delay in soybean planting, NDSU Extension Agronomist Hans Kandel reminds farmers to consider soybean bloom when applying herbicides. “If someone planted soybeans May 19, they were basically ahead compared to normal heat units. Based on that information, I’d expect the plants will still develop normally as we continue in the season,” he says. “Anything planted the last week of May is a little behind, but development is ok.” Kandel says if a farmer planted soybeans around mid-May, the plants would be in bloom around the first week of July. “If the crop was planted later, we would expect bloom to be somewhere between July 10 and July 13. These are rough estimates, but we are fairly close to a normal bloom period.” If farmers choose to apply dicamba, Kandel says be mindful of the Special Local Needs label. In North Dakota, the label allows soybeans to be sprayed up to June 30 or R1 stage, whichever comes first.
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