EAS Publisher | Critical Review on the Inclusion of the Measurement of Nitrogen Produced in Short Incubations (Nan) in the Diagnostic Protocol of Nitrogenous Fertility in Cordoba (Argentina)

Critical Review on the Inclusion of the Measurement of Nitrogen Produced in Short Incubations (Nan) in the Diagnostic Protocol of Nitrogenous Fertility in Cordoba (Argentina)

DOI : https://doi.org/10.36344/ccijavs.2023.v05i01.002

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N is the nutrient that is applied in the greatest quantity to increase crop yields. Having a soil analysis that allows estimating the N needs of the crop would have economic and environmental benefits. The measurement of total C, total N and the content of N-nitrates are part of the analytical protocol that is carried out in pre-sowing for diagnostic purposes. However, the relationship between these measurements and actual N mineralization in the field is only approximate. To improve the estimation of N availability, it is necessary to consider the initial inorganic N and the mineralized N (Nmin) during the growing season. The search for an accurate predictor of Nmin that can be done quickly in the laboratory has sparked interest in measuring N in short anaerobic incubations or Nan. In this article, the soil properties that intervene in the N mineralization process that affect the measurement of Nan are exposed to know the scope: advantages and disadvantages of the inclusion of Nan in the routine protocol for diagnostic purposes for its use as a predictor of mineralized N during the crop cycle.

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