Co-fertilization of Sulfur and Struvite-Phosphorus in a Slow-Release Fertilizer Improves Soybean Cultivation

Co-fertilization of Sulfur and Struvite-Phosphorus in a Slow-Release Fertilizer Improves Soybean Cultivation

In face of the alarming world population growth predictions and its threat to food security, the development of sustainable fertilizer alternatives is urgent. Moreover, fertilizer performance should be assessed not only in terms of yield but also in root system development, as it impacts soil fertil...

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Published in:Frontiers in plant science Vol. 13; p. 861574
Main Authors: Valle, Stella F, Giroto, Amanda S, Guimarães, Gelton G F, Nagel, Kerstin A, Galinski, Anna, Cohnen, Jens, Jablonowski, Nicolai D, Ribeiro, Caue
Format: Journal Article
Language:English
Published: Switzerland Frontiers Media S.A 10-05-2022
Subjects:
fertilizer
Plant Science
polysulfide
root
soybean
struvite
sulfur
soybean
struvite
rhizotron
root
sulfur
polysulfide
fertilizer
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Summary:In face of the alarming world population growth predictions and its threat to food security, the development of sustainable fertilizer alternatives is urgent. Moreover, fertilizer performance should be assessed not only in terms of yield but also in root system development, as it impacts soil fertility and crop productivity. Fertilizers containing a polysulfide matrix (PS) with dispersed struvite (St) were studied for S and P nutrition due to their controlled-release behavior. Soybean cultivation in a closed system with St/PS composites provided superior biomass compared to a reference of triple superphosphate (TSP) with ammonium sulfate (AS), with up to 3 and 10 times higher mass of shoots and roots, respectively. Root system architectural changes may explain these results, with a higher proliferation of second order lateral roots in response to struvite ongoing P delivery. The total root length was between 1,942 and 4,291 cm for plants under St/PS composites and only 982 cm with TSP/AS. While phosphorus uptake efficiency was similar in all fertilized treatments (11-14%), St/PS achieved a 22% sulfur uptake efficiency against only 8% from TSP/AS. Overall, the composites showed great potential as efficient slow-release fertilizers for enhanced soybean productivity.
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These authors share senior authorship
ORCID: Stella F. Valle, orcid.org/0000-0002-8874-7349; Amanda S. Giroto, orcid.org/0000-0003-4279-2053; Gelton G. F. Guimarães, orcid.org/0000-0001-9029-5241; Kerstin A. Nagel, orcid.org/0000-0003-3025-0388; Anna Galinski, orcid.org/0000-0002-7335-8105; Jens Cohnen, orcid.org/0000-0003-1069-0212; Nicolai D. Jablonowski, orcid.org/0000-0002-5298-5521; Caue Ribeiro, orcid.org/0000-0002-8908-6343
Reviewed by: Elke Bloem, Julius Kühn-Institut, Germany; Shayan Shariati, University of Tehran, Iran
Edited by: James Stangoulis, Flinders University, Australia
This article was submitted to Plant Nutrition, a section of the journal Frontiers in Plant Science
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2022.861574