- Unusual twisted growth of whorls noted in some fields.
- Likely caused by sudden return to good growing conditions.
- Yield effects are minimal, if any.
Whilst walking corn fields today (like every good corn grower should be doing regularly early in the season, I might add!), I noticed something that I had not seen just a few days ago. Scattered plants throughout the field were exhibiting unusual twisted growth. The whorls of the affected plants were tightly twisted, often bent over severely, and not unfurling on a timely basis.
One’s natural instincts would blame the twisted growth on herbicide injury, especially those characterized by the cell growth inhibitor mode of action. Where such herbicides are applied pre-plant or pre-emergence, shoot uptake of the herbicide by the emerging seedling can result in twisted growth. But, in some cases, the cause is something entirely different.
For more information: https://www.agry.purdue.edu/ext/corn/news/articles.00/Twisted_Whorls-0527.html