Effect of sources and doses of sulfate on soybean crop

Authors

DOI:

https://doi.org/10.5216/pat.v47i3.45394

Keywords:

Glycine max, sulfur, grain yield.

Abstract

Crop demands for the macronutrient sulfur (S) are similar or greater than those for phosphorous. However, S is often overlooked in the management of crop fertilization. This study aimed to evaluate the effect of sources and doses of S on soybean cultivation under field conditions. A randomized block design, with 4 replications, was used. The treatments were arranged in a factorial scheme with one additional treatment (3 x 5 + 1), totaling 64 experimental units. Sources (elemental sulfur, single superphosphate and agricultural gypsum) and doses (20 kg ha-1, 40 kg ha-1, 60 kg ha-1, 80 kg ha-1 and 100 kg ha-1) of S were used, in addition to one control (without fertilizer). The following parameters were assessed: plant height at flowering, 1,000-seed weight, yield and agronomic efficiency, which were affected by the doses and sources of S; number of pods per plant, only affected by the sources of S; and number of pods with 3 seeds, with no statistical difference for any of the treatments. The highest yield recorded was 1,927 kg ha-1, at the dose of 80 kg ha-1 of S for gypsum, and the greatest agronomic efficiency was observed for the single superphosphate, at the dose of 20 kg ha-1 of S.

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Author Biographies

  • Liliane Oliveira Lopes, Federal University of Piauí
    Engenheira Agronoma, mestrado em Solos e nutrição de plantas, trabalha na linhas de pesquisa fertilidade do solo, nutrição de plantas, cultivo de grandes culturas e experimentos a campo.
  • Márcio Clero Soares de Moura, Federal University of Piauí
    Professor doutor da UFPI campus Teresina-PI, departamento de Química do Solo
  • Sammy Sidney Rocha Matias, Universidade Estadual do Piauí
    Professor doutor da UESPI campus Corrente-PI, departamento de pedologia e topografia
  • Ricardo dos Santos Lopes, Federal University of Piauí
    Graduado em Geografia pela UESPI, mestrado em solos e nutrição de plantas pela UFPI com linha de pesquisa em fertilidade do solo.
  • Marcos Paulo Rodrigues Teixeira, Federal University of Piauí
    Aluno de graduação do curso de Engenharia Florestal pela UFPI, campus Bom Jesus-PI, com linha de pesquisa metais pesados e fertilidade do solo.

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Published

2017-09-25

Issue

v. 47, n. 3, Jul./Sep. 2017

Section

Research Article

License

Authors will not be paid for published articles and must waive their copyright in favor of the PAT journal. On the other hand, they are solely responsible for the content of those articles, even if the Editor holds the right to adjust them to the norms of the journal. Authors are allowed to publish their articles simultaneously in their institutional repositories, as soon as the original publication at the PAT journal is mentioned.

How to Cite

LOPES, L. O. et al. Effect of sources and doses of sulfate on soybean crop. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], v. 47, n. 3, p. 296–302, 25 Sep.2017.