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OMAFRA: Soil nitrogen supply and 2023’s weather

June 13, 2023  By Field Crop News

Throughout the growing season, microbes within the soil break down organic nitrogen contained in soil organic matter and release it as plant-available ammonium.  This process is known as nitrogen mineralization.

Nitrogen mineralization is favoured by warm soil temperatures with adequate soil moisture and aeration.  Excess moisture can slow mineralization or increase the potential for losses through denitrification (especially under warm conditions) on heavier-textured soils or leaching in lighter soils.  Droughty conditions may slow mineralization as well, due to lack of a habitable environment for soil microbes.

So, what does 2023’s weather tell us about anticipated soil nitrogen supply? |READ MORE




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