African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6693

Full Length Research Paper

Cucurbita pepo nitrogen fertigation in greenhouse environments

André Maller*, Roberto Rezende, Paulo Sérgio Lourenço de Freitas, Ânderson Takashi Hara and Jhonatan Monteiro de Oliveira
Universidade Estadual de Maringá, Av. Colombo, no 5790, Jd. Universitário, Maringá, Paraná, CEP 87020-900, Brazil. 
Email: [email protected]

  •  Received: 04 September 2013
  •  Accepted: 15 October 2015
  •  Published: 22 October 2015

Abstract

Greenhouse crops afford higher quality and competitiveness. The objective of this work was to evaluate the effect of nitrogen doses (80, 110, 140 and 170 kg ha-1) applied through fertigation in the yield of two cultivars of Cucurbita pepo (Anita F1 and Novita Plus), in a 4 × 2 factorial design. The experiment was carried out in an entirely randomized design with eight replications. The study evaluated the sum of the fresh biomass of fruits per plant, number of fruits per plant and mean fruit biomass. Analysis of the collected data made it possible to assume that increasing doses of N led to a linear yield increase for cultivar Anita F1 and a quadratic increase for cultivar Novita Plus.

 

Key words: Cucurbita pepo, nitrogen, drip fertigation, vegetables.