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Impacts of Flooding on Crop Development

Flooded field

The recent warm weather has accentuated the adverse effects of waterlogging on any emerged crops. Generally, the oxygen levels in saturated soils reach a point that is harmful to plant growth after 48 to 96 hours. In an effort to survive, tissues growing under reduced oxygen levels use alternate metabolic pathways that produce byproducts that can be toxic at elevated levels. Waterlogged conditions also reduce root growth and can predispose the plant to root rots, so the results of excess moisture may not be known until late in the season.

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