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Effect of Elemental Sulfur as Fertilizer Ingredient on the Mobilization of Iron from the Iron Pools of a Calcareous Soil Cultivated with Durum Wheat and the Crop’s Iron and Sulfur Nutrition

Author

Listed:
  • Dimitris L. Bouranis

    (Plant Physiology Laboratory, Crop Science Department, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece)

  • Styliani N. Chorianopoulou

    (Plant Physiology Laboratory, Crop Science Department, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece)

  • Miltiadis Margetis

    (Plant Physiology Laboratory, Crop Science Department, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece)

  • Georgios I. Saridis

    (Botanical Institute, Cologne Biocenter, University of Cologne, D–50674 Cologne, Germany)

  • Petros P. Sigalas

    (Plant Physiology Laboratory, Crop Science Department, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece)

Abstract

The granules of conventional fertilizers have been enriched recently with 2% elemental sulfur (S 0 ) via a binding material of organic nature and such fertilizers are suitable for large scale agriculture. In a previous work, we demonstrated that a durum wheat crop that received the enriched fertilization scheme (FBS 0 -crop) accumulated a higher amount of Fe compared to the durum wheat crop fertilized by the corresponding conventional fertilization scheme (F-crop). In this study, we investigated the effect of S 0 on the contingent mobilization of iron from the iron pools of the calcareous field that affiliated the durum wheat crop and the corresponding effect on the crop’s iron nutrition and sulfur nutrition. A sequential extraction of Fe from root zone soil (rhizosoil) was applied and the fluctuations of these fractions during crop development were monitored. The fertilization with FBS 0 at sowing affected the iron fractions of the rhizosoil towards iron mobilization, thus providing more iron to the crop, which apart from the iron nutrition fortified the crop’s sulfur nutrition, too. No iron was found as iron attached to carbonates of the rhizosoil. Fluctuations of the iron pool, bound or adsorbed to the organic matter, were exactly the opposite to those of the iron pool associated with the clay particles in both treatments, suggesting iron exchange between the two pools. Replenishment of the F-crop’s Fe content and a deficit in the FBS 0 -crop’s Fe content in the rhizosoil were found at the end of the cultivation period. Furthermore, the initiation of the fast stem elongation stage (day 125) constituted a turning point. Before day 125, the use of FBS 0 increased the iron concentration in the main stems and this was an early fortification effect, followed by an increase in the organic S concentration. Following day 125, the FBS 0 -crop consisted of plants with higher main stems and less tillers. A late fortification effect was observed in the iron concentration of the main stems and their heads after the stage of complete flowering. Prior to harvesting in the FBS 0 -crop, all plant parts were heavier, with more iron and organic sulfur accumulated in these plant parts, and the obtained commercial yield of the FBS 0 -crop was higher by 27.3%.

Suggested Citation

  • Dimitris L. Bouranis & Styliani N. Chorianopoulou & Miltiadis Margetis & Georgios I. Saridis & Petros P. Sigalas, 2018. "Effect of Elemental Sulfur as Fertilizer Ingredient on the Mobilization of Iron from the Iron Pools of a Calcareous Soil Cultivated with Durum Wheat and the Crop’s Iron and Sulfur Nutrition," Agriculture, MDPI, vol. 8(2), pages 1-17, February.
  • Handle: RePEc:gam:jagris:v:8:y:2018:i:2:p:20-:d:129784
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    Cited by:

    1. Urs Feller & Stanislav Kopriva & Valya Vassileva, 2018. "Plant Nutrient Dynamics in Stressful Environments: Needs Interfere with Burdens," Agriculture, MDPI, vol. 8(7), pages 1-6, July.

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