Flooding means lost N
Jan 19, 2011 | 6:04 AM
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What does last year’s flooding mean to soil nitrogen levels? Viterra did a bunch of soil sampling in the fall to compare flooded versus non-flooded parts of fields and they’ve summarized the data to come up with some conclusions.
On fields where a crop was seeded and some of the crop was subsequently flooded out, you’d expect more nutrients to be available where there was little or no crop growing. However, the soil testing came up with very little difference.
The flooding caused nitrogen losses and since the nitrogen wasn’t lower down in the soil profile, it was probably lost due to denitrification in the waterlogged soil.
