MAIZE PRODUCTIVITY AS A RESULT OF APPLICATION OF CONTROLLED AND SLOW RELEASE UREA

Authors

  • SAMUEL STREGE CARLOS Instituto Federal Catarinense Campus Santa Rosa do Sul.
  • ELIETE DE FÁTIMA FERREIRA DA ROSA Instituto Federal Catarinense Campus Santa Rosa do Sul.
  • JÉSSICA FERNANDES KASEKER Instituto Federal Catarinense Campus Santa Rosa do Sul.
  • THAIS FRANCINI SOKAL Instituto Federal Catarinense Campus Santa Rosa do Sul.
  • MARCOS ANDRÉ NOHATTO Instituto Federal Catarinense Campus Santa Rosa do Sul.

DOI:

https://doi.org/10.18512/rbms.2020.v19.e1116

Keywords:

Nitrogen, dicyandiamide, NBPT, polymer-coated urea, Zea mays.

Abstract

Nitrogen (N) is the main limiting nutrient for productivity and yield
components of maize crop. Urea is the main nitrogen source used, which, despite the high N concentration (45%), presents many losses through leaching and volatilization.
In view of that, the purpose of the experiment was to evaluate the effect of applying N doses with urease inhibitor, nitrification inhibitor and slow-release urea, in relation to the conventional urea, on productivity and yield components of maize crop. The experiment was conducted in the municipality of Santa Rosa do Sul, state of Santa Catarina, in a 4x5 factorial scheme, where factor A corresponded to four nitrogen protection mechanisms (urea with urease inhibitor, urea with nitrification inhibitor, slow-release urea and conventional urea) and factor B corresponded to the surfaceapplied nitrogen percentage for the aforementioned protection mechanisms (0%, 25%, 50%, 75% and 100%). Under the edaphoclimatic conditions of the present study, fertilizers with inhibitors (nitrification and urease) and with slow release do not significantly increase maize productivity in relation to the conventional urea and, regardless of the source used, it is possible to reduce the recommended dose by 25%, based on soil analysis, without significantly impacting maize productivity.

Downloads

Published

2020-03-12

How to Cite

CARLOS, S. S., FERREIRA DA ROSA, E. D. F., KASEKER, J. F., SOKAL, T. F., & NOHATTO, M. A. (2020). MAIZE PRODUCTIVITY AS A RESULT OF APPLICATION OF CONTROLLED AND SLOW RELEASE UREA. REVISTA BRASILEIRA DE MILHO E SORGO, 19, 11. https://doi.org/10.18512/rbms.2020.v19.e1116

Issue

Vol. 19 (2020)

Section

Scientific Communication

License

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution License that allows the sharing of work and recognition of the work of authorship and initial publication in this journal.

Authors are able to take on additional contracts separately for non-exclusive distribution of the version of the paper published in this journal (eg, in an institutional repository or publish as a book), with acknowledgment of its initial publication in this journal.

Authors are permitted and encouraged to post their work online (eg, in institutional repositories or on their website) at any point before or during the editorial process, as this may leadto productive exchanges, as well as increase the impact and citation of published work.