– Rapid growth syndrome (RGS) describes a situation where random plants across a corn field exhibit tightly rolled upper plant leaves that do not unfurl normally.
– Within a week, twisted leaves usually unfurl and affected plants resume normal growth.
– RGS has been observed in years when cool, cloudy weather was followed by a sharp transition to warm, sunny weather, exposing corn plants to a rapid change in improved growing conditions.
The corn growth stage chart is an update to a previous chart. The 22 inch row width 1/1000 of an acre value for measuring plant stands was changed from 23’5″ to 23’9.”