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Soil Sulfur Deficiency Restricts Canola ( Brassica napus ) Productivity in Northwestern Russia Regardless of NPK Fertilization Level

Author

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  • Aleksei Dobrokhotov

    (Agrophysical Research Institute, Grazhdanskiy Prospect 14, 195220 Saint-Petersburg, Russia
    Digital Twins Laboratory of Agrolandscapes (AgroDT Lab), V.V. Dokuchaev Soil Science Institute, Pyzhyovskiy Lane 7 Building 2, 119017 Moscow, Russia
    Agro-Technology Institute, Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia)

  • Ludmila Kozyreva

    (Agrophysical Research Institute, Grazhdanskiy Prospect 14, 195220 Saint-Petersburg, Russia)

  • Mariia Fesenko

    (Agrophysical Research Institute, Grazhdanskiy Prospect 14, 195220 Saint-Petersburg, Russia)

  • Victoria Dubovitskaya

    (Agrophysical Research Institute, Grazhdanskiy Prospect 14, 195220 Saint-Petersburg, Russia)

  • Sofia Sushko

    (Agrophysical Research Institute, Grazhdanskiy Prospect 14, 195220 Saint-Petersburg, Russia
    Agro-Technology Institute, Peoples Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia
    Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Institutskaya 2, 142290 Pushchino, Russia)

Abstract

Canola cultivation at high latitudes is becoming more promising in terms of modern climate change. Sustainable crop production requires an understanding of yield-limiting factors, which need to be adjusted in agricultural management first. Therefore, our study was aimed at examining the effect of climate and soil fertility factors on the canola yield from 2012 to 2015 in northwestern Russia. Simultaneously, effectiveness of chemical fertilizer (N 65 P 50 K 50 and N 100 P 75 K 75 ) rates was tested. Studied soils had light texture, high acidity and severe sulfur deficiency. Canola yield (Y) varied from 0.81 to 1.60 t·ha − 1 for the observed period. Applied fertilizer increased Y by around 30%, but this change was not significant. Climate effect testing with the FAO-AquaCrop simulation showed no noticeable water and heat stresses for the study period (0% to 20% reduction in potential Y). Among the tested soil properties, the content of organic carbon, available nitrogen and sulfur significantly correlated with Y (r = 0.58–0.66). Combining these factors together with soil pH in a path model explained 60% of variability in Y. Importantly, sulfur had the highest and most significant effect in this model. Thus, this soil parameter is the main yield-limiting factor in the study area, which must be the first to be adjusted in agricultural practice.

Suggested Citation

  • Aleksei Dobrokhotov & Ludmila Kozyreva & Mariia Fesenko & Victoria Dubovitskaya & Sofia Sushko, 2023. "Soil Sulfur Deficiency Restricts Canola ( Brassica napus ) Productivity in Northwestern Russia Regardless of NPK Fertilization Level," Agriculture, MDPI, vol. 13(7), pages 1-13, July.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:7:p:1409-:d:1194931
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    References listed on IDEAS

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    1. Tinashe Lindel Dirwai & Aidan Senzanje & Tafadzwanashe Mabhaudhi, 2021. "Calibration and Evaluation of the FAO AquaCrop Model for Canola ( Brassica napus ) under Varied Moistube Irrigation Regimes," Agriculture, MDPI, vol. 11(5), pages 1-18, May.
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