Take advantage of the elevated view from the combine cab to survey and assess the effectiveness of your weed management program this fall.
“A field free of weeds during harvest is very desirable and represents an outcome that will require increased management as weeds continue to adapt to modern crop production practices,” said Aaron Hager, University of Illinois Extension weed specialist.
Many observations have been made recently that waterhemp and horseweed are frequently appearing in corn and soybean fields across Illinois. Hager’s recent field visits have indicated that seed production on these mature plants has been successful, suggesting a preharvest herbicide application may do little to reduce the viability of these mature seeds.
“There are many reasons that these two particular weed species have successfully completed their life cycle in corn and soybean fields,” he said. “One reason is the occurrence of herbicide resistance. Glyphosate resistance in Illinois waterhemp and horseweed populations is known to occur, and we suspect this will become increasingly common in future growing seasons.… Continue readingRead More »