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Synergism of sulfur availability and agronomic nitrogen use efficiency

OAR@ICRISAT

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Relation http://oar.icrisat.org/12510/
https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/agj2.21535
https://doi.org/10.1002/agj2.21535
 
Title Synergism of sulfur availability and agronomic nitrogen use efficiency
 
Creator Agyin-Birikorang, S
Boubakry, C
Kadyampakeni, D M
Adu-Gyamfi, R
Chambers, R A
Tindjina, I
Fuseni, A A
 
Subject Soil Fertility
 
Description Nutrient management strategies that exploit nutrient elements’ synergistic interaction to enhance nitrogen use efficiency (NUE) are needed for economic and environmental reasons. A field study was carried out during the 2020–2022 growing seasons at six locations in three countries: two each in the United States, Ghana, and Mali using three sulfur (S) sources with different bioavailability levels (micronized elemental S, untreated elemental S, and ammonium sulfate); applied at five S application rates: site-specific recommended S rate (SR), 25%, 50%, 75%, and 125% of SR; and a single nitrogen (N) application rate (site-specific recommended N rate) to comprehensively investigate the influence of S availability on NUE. Specific objectives were to evaluate the impact of S availability on corn (Zea mays L.) yield, N uptake, and NUE. Regardless of the S source and experimental site, the aboveground S and N uptake were strongly and positively correlated (r > 0.88). Increases in apparent N recovery efficiency and agronomic NUE occurred with corresponding increases in S application rate, irrespective of the site and S source. The combined data showed that the agronomic efficiency of applied N fertilizer sources could be enhanced significantly by increasing S availability in soils. With the rising N fertilizer costs in recent times, N losses from the applied fertilizer are a drain on farmers’ income and of environmental concern. Thus, increasing NUE is a needed strategy to safeguard against excessive N application, increase farm profits, and minimize N losses to the environment that could disrupt the ecosystem function.
 
Publisher American Society of Agronmy
 
Date 2023-12-30
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12510/1/Agronomy%20Journal_1-12_2023.pdf
Agyin-Birikorang, S and Boubakry, C and Kadyampakeni, D M and Adu-Gyamfi, R and Chambers, R A and Tindjina, I and Fuseni, A A (2023) Synergism of sulfur availability and agronomic nitrogen use efficiency. Agronomy Journal. pp. 1-12. ISSN 1435-0645