African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Nitrogen fertilization for summer corn in succession to cover crops under direct drilling system in Western Paraná - Brazil

Doglas Bassegio*, Ivan Wernecke, Reginaldo Ferreira Santos, Samuel Nelson Melegari de Souza1, Patrícia Perreira Dias and Deonir Secco
UNIOESTE – Western Paraná State University – Post-graduation Program, Master Course of Energy in Agriculture. Rua Universitária, 2069, CEP: 85.819-130 Bairro Faculdade, Cascavel, Paraná, Brasil.
Email: [email protected]

  •  Accepted: 15 May 2013
  •  Published: 16 May 2013

Abstract

The quality of vegetal residues from crops and green manure can influence the mineralization/immobilization rate of nitrogen and the subsequent utilization of this nutrient by the following crops. The aim of this study was to evaluate the effect of nitrogen rates applied to the cover of summer corn, succeeding winter cover crops under direct drilling system. The experimental design consisted of randomized blocks with four replications in a scheme with subdivided plots. The main plot was composed of two crops previous to corn: Common oat (Avena strigosa Schieb), forage turnip (Raphanus sativus) and a fallow area (weed). The subplot consisted of four rates of nitrogen (0, 30, 60 and 120 kg ha-1). The production components analyzed were: Ear diameter, rows of grains/ear, mass of 100 grains and yield. Cover crops did not affect the components of corn production. The corn cultivated in succession to forage turnip showed responses to nitrogen fertilization.

 

Key wordsAvena strigosa Schieb, Raphanus sativusZea mays.