Wheat nitrogen utilization efficiency and yield as affected by nitrogen management and environmental conditions

نویسندگان

چکیده

Nitrogen (N) is the main nutrient for plant nutrition, however, its fertilization management still very complex. To evaluate wheat N utilization efficiency (NUtE) and yield in response to considering influence of environmental conditions, an experiment was carried out three field conditions Southern Brazil: Londrina rainfed irrigation Ponta Grossa rainfed. A complete (2 × 2 2) + 1 factorial arrangement evaluated two rates (40 80 kg ha-1), sources (ammonium nitrate urea), timings (at sowing or at beginning tillering), additional treatment without fertilization. Agronomic characteristics related productivity nutrition were evaluated. Irrigation increased density fertile spikes accumulated shoot dry matter anthesis, which partially explained better grain irrigated condition. The higher accumulation essential increase environments with lower water deficit, based on their NUtE yield. reduced (in conditions), production all environments. In a colder condition (i.e. Grossa), use rate provided greater yield, thousand-grain weight, spikes. can be warmer wetter that favor mineralization soil organic decomposition soybean straw. choice urea ammonium economic criteria low deficit potential NH3 volatilization. exclusively may suitable supply spring requirements.

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ژورنال

عنوان ژورنال: Emirates Journal of Food and Agriculture

سال: 2022

ISSN: ['2079-0538', '2079-052X']

DOI: https://doi.org/10.9755/ejfa.2021.v33.i11.2788