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Urease Inhibitors Effects on the Nitrogen Use Efficiency in a Maize–Wheat Rotation with or without Water Deficit

Author

Listed:
  • Raúl Allende-Montalbán

    (Environment and Agronomy Department, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA, CSIC), Ctra. de la Coruña km. 7,5, 28040 Madrid, Spain
    Department of Agricultural Chemistry and Food Science, Universidad Autónoma de Madrid, Av. Francisco Tomás y Valiente 7, 28049 Madrid, Spain)

  • Diana Martín-Lammerding

    (Environment and Agronomy Department, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA, CSIC), Ctra. de la Coruña km. 7,5, 28040 Madrid, Spain)

  • María del Mar Delgado

    (Environment and Agronomy Department, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA, CSIC), Ctra. de la Coruña km. 7,5, 28040 Madrid, Spain)

  • Miguel A. Porcel

    (Environment and Agronomy Department, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA, CSIC), Ctra. de la Coruña km. 7,5, 28040 Madrid, Spain)

  • José L. Gabriel

    (Environment and Agronomy Department, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA, CSIC), Ctra. de la Coruña km. 7,5, 28040 Madrid, Spain
    Centro de Estudios e Investigación para la Gestión de Riesgos Agrarios y Medioambientales (CEIGRAM), Paseo de la Senda del Rey 13, 28040 Madrid, Spain)

Abstract

The use of urease inhibitors in irrigated systems decreases both soil ammonium (NH 4 + ) and nitrate (NO 3 − ) availability, and, thus, could be an easy tool to reduce N loss due to ammonia volatilization and NO 3 − leaching. The main goal of this experiment was to assess the effect of urease inhibitors on N use efficiency, N losses, and their economic impact in a maize-wheat field experiment. In this study, 10 treatments were compared, combining the urea fertilizer with or without urease inhibitor, applied in one or two dressings, and under optimal or sub-optimal irrigation. A single application of urease inhibitor (IN 1d ), coupled with the conventional urea, helped to reduce the nitrate leaching risk both during the maize period (even when compared to the two dressing treatment) and after harvest. In addition, this improvement was achieved together with an increase in economic benefit, even when compared with the application of the same amount of regular urea split into two dressings. Under low water availability systems, the benefits of applying urease inhibitors increased with respect to the application of regular urea, making this technique a very promising strategy for adaptation to climate change in arid and semiarid regions.

Suggested Citation

  • Raúl Allende-Montalbán & Diana Martín-Lammerding & María del Mar Delgado & Miguel A. Porcel & José L. Gabriel, 2021. "Urease Inhibitors Effects on the Nitrogen Use Efficiency in a Maize–Wheat Rotation with or without Water Deficit," Agriculture, MDPI, vol. 11(7), pages 1-17, July.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:7:p:684-:d:597482
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    Cited by:

    1. Raúl Allende-Montalbán & Diana Martín-Lammerding & María del Mar Delgado & Miguel A. Porcel & José L. Gabriel, 2022. "Nitrate Leaching in Maize ( Zea mays L.) and Wheat ( Triticum aestivum L.) Irrigated Cropping Systems under Nitrification Inhibitor and/or Intercropping Effects," Agriculture, MDPI, vol. 12(4), pages 1-18, March.

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