Learning More About the Corn Control System
To develop a healthy crop, the corn control system works day and night within the plant.
What is the control system of the plant? The nodal root system.
The nodal root system is the second set of roots that emerge from the seed. First is the radical root, followed by five to six rings of nodal roots.
Roots Run Deep
These roots grow above the seed that was planted. That’s why planting depth is so important. Ideally, we like to see planting depth at 1.5-2.5 inches to give the nodal root system room to grow.
We do not want the nodal roots to show above the ground. You may see some roots attached to the stalk of the plant, but those are brace roots that only emerge when the plant has been stressed. If your fields have been impacted by stronger winds this growing season, your corn likely has brace roots.
The nodal root system won’t be damaged if it grows above the surface, but this system is very good at absorption and could absorb a herbicide that could damage the plant. Additionally, when these roots are above ground, we lose the anchor that this system provides to the plant, especially during the summer storms we’ve had the last couple of years.
With drought conditions throughout recent years, we’ve also seen that more shallow nodal roots correlate with more signs of increased drought stress. This is because roots absorb moisture and nutrients.
We need nodal roots to grow deep into the ground to absorb as much as possible to provide for the plant. From planting to V3, the seed can provide for the plant. But once the corn plant gets to V4, the nodal roots are established to provide for the plant until harvest.
KEY BENEFITS OF BW MELTDOWN
To learn more, reach out to us and we’ll show you how you can maximize your fields and your root systems!