Soybean aphids are still showing up in some North Dakota fields. “This year we scouted a total of 395 soybean fields in North Dakota and 16 percent of the fields that were scouted had soybean aphids in them,” explained NDSU Extension Entomologist Jan Knodel. Aphid numbers ranged from one to 406 aphids per plant, with an average of 25 per plant, and the top spots were the northeast and southeast parts of the state. Knodel reminds farmers to remain vigilant with their scouting. “You need to continue to scout until the soybean at least reaches the R6 whole seed stage. The aphids are moving down now to the lower mid canopy, so if you’re doing some late-season scouting, be sure to look at that lower-to-middle canopy for the aphids.”
