Field corn yield in response to humic acids application in the absence or presence of liming and mineral fertilization

Authors

  • Marihus Altoé Baldotto Universidade Federal de Viçosa
  • Raphael Oliveira de Melo Universidade Federal de Viçosa
  • Lilían Borges Baldotto Universidade Federal de Viçosa

DOI:

https://doi.org/10.5433/1679-0359.2019v40n6Supl2p3299

Keywords:

Plant production, Soil chemistry and fertility, Plant nutrition, Humic substances.

Abstract

Corn cultivation continually demands new technologies, since average yields can still be increased. This study aimed to evaluate the response of high-yield corn to humic acids, isolated from organic manure compost, with or without the application of lime and fertilizer. The experiment was conducted at Milhão® (http://www.omilhao.com.br) in Florestal, Minas Gerais State, Brazil. Three treatments were used: (a) control, without liming, fertilization, or humic acids; (b) conventional farm cultivation, with liming and fertilization; (c) liming, fertilization, and humic acids applied to seeds. The experiment design was a randomized block with five replicates (fifteen experimental units). Lime was applied at 1.6 Mg ha-1, incorporated into total area. Fertilization treatments included 300 kg ha-1 NPK 08-28-16 at sowing, and 500 kg ha-1 NPK 20-00-20 in coverage. The concentration of humic acids used in both seed treatment was 10 mmol L-1 of C. Biometrics and biomass productivity were evaluated at harvest time. Humic acids, whether applied as a seed coating, increased yield by ~15% higher than conventional farm cultivation, and this difference was statistically significant. Therefore, the use of humic acids based plant regulators is positive and complementary to the inputs generally used for corn yield.

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Author Biographies

Marihus Altoé Baldotto, Universidade Federal de Viçosa

Prof. Dr., Universidade Federal de Viçosa, UFV, Campus Florestal, Instituto de Ciências Agrárias, Florestal, MG, Brasil.

Raphael Oliveira de Melo, Universidade Federal de Viçosa

Discente, Curso de Doutorado do Programa de Pós-Graduação em Solos e Nutrição de Plantas, UFV, Viçosa, MG, Brasil.

Lilían Borges Baldotto, Universidade Federal de Viçosa

Profa. Dra., Universidade Federal de Viçosa, UFV, Campus Florestal, Instituto de Ciências Agrárias, Florestal, MG, Brasil.

References

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Published

2019-09-30

How to Cite

Baldotto, M. A., Melo, R. O. de, & Baldotto, L. B. (2019). Field corn yield in response to humic acids application in the absence or presence of liming and mineral fertilization. Semina: Ciências Agrárias, 40(6Supl2), 3299–3304. https://doi.org/10.5433/1679-0359.2019v40n6Supl2p3299

Issue

Section

Communication

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