Forms of urea and nitrogen levels in top dressing in the agronomic performance of wheat genotypes

Authors

  • André Mateus Prando Universidade Estadual de Londrina
  • Claudemir Zucareli Universidade Estadual de Londrina
  • Vanoli Fronza Embrapa Soja/Epamig
  • Manuel Carlos Bassoi Embrapa Soja
  • Fábio Álvares de Oliveira Embrapa Soja

DOI:

https://doi.org/10.5433/1679-0359.2012v33n2p621

Keywords:

Triticum aestivum L., Urease inhibitor, Protected urea, Nitrogen fertilization.

Abstract

The objective of this study was to evaluate the effect of nitrogen fertilization in top dressing from various forms of urea in wheat genotypes on no-till system. Wheat genotypes developed by EMBRAPA (cultivars BRS 208 and BRS Pardela and line IWT 04008) were evaluated in three independents experiments in Ponta Grossa, State of Paraná, Brazil in 2008. Three forms of urea were evaluated (conventional urea, urea with urease inhibitor and protected urea) with four levels of N (0, 40, 80 and 120 kg ha-1) applied in top dressing in early tillering. Randomized block design, in a 3 x 4 factorial experiment, with four replications were used. The increase in the levels of nitrogen in any form of urea used, increase the dry mass of the flag leaf, the number of spikes m-2 and yield, but reduces hectoliter mass. The form of urea applied in top dressing does not influence the agronomic characteristics of the evaluated genotypes. Cultivars BRS 208 and BRS Pardela were more productive and had higher N content grain than line IWT 04008.

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Author Biographies

André Mateus Prando, Universidade Estadual de Londrina

Doutorando do Programa de Pós-Graduação em Agronomia, UEL, Londrina, PR.

Claudemir Zucareli, Universidade Estadual de Londrina

Prof. Adjunto do Deptº de Agronomia, UEL. Londrina, PR.

Vanoli Fronza, Embrapa Soja/Epamig

Pesquisador Embrapa Soja/Epamig, Uberaba, MG.

Manuel Carlos Bassoi, Embrapa Soja

 Pesquisador Embrapa Soja, Londrina, PR.

Fábio Álvares de Oliveira, Embrapa Soja

Pesquisador Embrapa Soja, Londrina, PR.

Published

2012-05-14

How to Cite

Prando, A. M., Zucareli, C., Fronza, V., Bassoi, M. C., & Oliveira, F. Álvares de. (2012). Forms of urea and nitrogen levels in top dressing in the agronomic performance of wheat genotypes. Semina: Ciências Agrárias, 33(2), 621–632. https://doi.org/10.5433/1679-0359.2012v33n2p621

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