Macro and Micro-Nutrient Accumulation and Partitioning in Soybean Affected by Water and Nitrogen Supply

Authors

Ingrid Silva Setubal, Federal University of Piauí
Aderson Soares de Andrade Júnior, Brazilian Agricultural Research Corporation
Silvestre Paulino da Silva, Federal University of Piauí
Artenisa Cerqueira Rodrigues, Federal University of Piauí
Aurenívia Bonifácio, Federal University of Piauí
Evandro Henrique Figueiredo Moura da Silva, University of São Paulo
Paulo Fernando de Melo Jorge Vieira, Brazilian Agricultural Research Corporation
Rafael de Souza Miranda, Federal University of Piauí
Nicolas Cafaro La Menza, University of Nebraska-LincolnFollow
Henrique Antunes de Souza, Brazilian Agricultural Research Corporation

Date of this Version

5-6-2023

Citation

Setubal, I.S.; Andrade Júnior, A.S.d.; Silva, S.P.d.; Rodrigues, A.C.; Bonifácio, A.; Silva, E.H.F.M.d.; Vieira, P.F.d.M.J.; Miranda, R.d.S.; Cafaro La Menza, N.; Souza, H.A.d. Macro and Micro-Nutrient Accumulation and Partitioning in Soybean Affected byWater and Nitrogen Supply. Plants 2023, 12, 1898. https://doi.org/10.3390/ plants12091898

Comments

Open access.

Abstract

This study aimed to investigate the influence of water availability and nitrogen fertilization on plant growth, nutrient dynamics, and variables related to soybean crop yield. Trials were performed in Teresina, Piauí, Brazil, using randomized blocks in a split-split plot arrangement. The plots corresponded to water regimes (full and deficient), the split plots to N fertilization (0 and 1000 kg ha^-1 N-urea), and the split-split plots to harvest times of soybean plants (16, 23, 30, 37, 44, 58, 65, 79 and 86 days after emergence), with three replicates. In general, the accumulation and partitioning of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulphur (S), copper (Cu), iron (Fe), manganese (Mn), zinc (Zn) and boron (B) were decreased in plants subjected to water deficit and without N fertilization. Although nitrogen fertilization promoted elevated N accumulation in tissues, it did not result in any significant yield gain, and the highest seed yields were found in plants under full irrigation, regardless of N supplementation. However, deficient irrigation decreased the seed oil content of N-fertilized plants. In conclusion, N fertilization is critical for nutrient homeostasis, and water availability impairs biomass and nutrient accumulation, thereby limiting soybean yield performance.