Corn root system development - John Kempf

During the establishment phase, plants expand their seminal root system as widely and deeply as possible. This phase lasts for about 40 days, until the ear embryo begins to form. The outer root system boundaries are established during this phase. Future root growth does not expand past the established borders. What might this mean for cultivation close to the 40 day mark ? Disturbing root systems at this point doesn’t seem like a wise idea.

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