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Restricted root growth caused by sidewall compaction at planting
Limited brace root development due to dry soil
The corn plant has 3 different stages of root development during its life cycle.
The earlier that root lodging occurs, the less of an impact it is likely to have on yield.
Left to right, control (no lodging) and plants with simulated wind lodging at V10, V12, and V16 stages. Lodging occurred in July, photos were taken in early September.
Corn plants are particularly susceptible to brittle snap damage at V5 to V8, when the growing point is emerging from the soil line.
Brittle snap observed at V5 to V8 often follows a surge in corn growth and development stimulated by favorable rainfall and temperature.
Carter, P.R. and K.D. Hudelson. 1988. Influence of simulated wind lodging on corn growth and grain yield. J. Prod. Agric. 1:295-299.
Mid-Season Root Lodging and Brittle Snap