R3 Corn Growth Stage Explained: Why Late-Season Tissue Sampling MattersVideo: R3 Corn Growth Stage Explained: Why Late-Season Tissue Sampling Matters
Corn pollination may be behind us, but the work isn't over.
In this field update from the Nutrien Innovation Farm in Champaign, Illinois, agronomist Tim Sickman discusses why growers should stay engaged with field scouting during the R3 (milk) stage of corn development. While favorable weather, strong pollination, and early grain fill are encouraging signs, important questions about crop nutrition and yield potential still remain.
Tim explains: What the R3 corn growth stage looks like
Why successful pollination isn't the finish line
The importance of late-season field scouting
How tissue sampling can identify nutrient deficiencies
The role of sulfur, zinc, potassium, and other nutrients during grain fill
Using tissue analysis to improve future fertility management plans
As corn moves through grain fill, understanding nutrient availability and plant health can provide valuable insights for maximizing yield potential and planning for next season.