Ammonia-oxidizing archaea are integral to nitrogen cycling in a highly fertile agricultural soil.

Although crop N uptake is not steady and peaks particularly during mid-season shoot growth, and nitrogen leaching may be significant during these wet summer month in the EAA, the estimated net nitrification rate would be well in the range to supply sufficient N throughout the growth season for a predominantly nitrification-derived, NO 3 − -based sugar cane growth.

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