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Nitrogen Dynamics in the No-Tillage System Soils

Author

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  • Karen Andreon Viçosi

    (Master in plant production from the State University of Goiás, Brazil)

Abstract

Nitrogen is an extremely important nutrient in no-till system, but its dynamics in the soil is influenced by several factors, including the crops used in rotation system and its C/N ratio, nitrate and ammonium content, fertilizer use, biological nitrogen fixation, depth and time of system implantation. Knowledge of these dynamics is critical to promote N availability during crop demand, reduce fertilizer use and improve sustainability. The crops used and their respective C/N ratio plays a fundamental role in the decomposition rate and nutrient cycling, directly influencing the relationship between mineralization and N immobilization, as well nitrate and ammonium content in soil. The highest nitrogen values are in surface layer, with its values decreasing in the soil profile and stratifying between the soil layers. Fertilizer use tends to increase the nitrate content of soil, while biological nitrogen fixation is favoured in the NTS and may supply the necessary N in some legumes. In addition, the increase in soil nitrogen content increases with the time of no-tillage system implementation.

Suggested Citation

  • Karen Andreon Viçosi, 2020. "Nitrogen Dynamics in the No-Tillage System Soils," JOJ Wildlife & Biodiversity, Juniper Publishers Inc., vol. 2(4), pages 85-87, July.
    • Handle: RePEc:adp:jjojwb:v:2:y:2020:i:4:p:85-87
    DOI: 10.19080/JOJWB.2020.02.555593
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