African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6849

Full Length Research Paper

An agronomic and economic evaluation of lettuce cultivars intercropped with rocket over two cultivation seasons

Andre Prechlak Barbosa
  • Andre Prechlak Barbosa
  • Departamento de Ciencias Agronomicas, Universidade Estadual de Maringa. Estrada da Paca, s/n, CEP: 87507-190, Bairro Sao Cristovao, Umuarama, PR, Brazil.
  • Google Scholar
Jailson de Oliveira Arieira
  • Jailson de Oliveira Arieira
  • Departamento de Ciencias Agronomicas, Universidade Estadual de Maringa. Estrada da Paca, s/n, CEP: 87507-190, Bairro Sao Cristovao, Umuarama, PR, Brazil.
  • Google Scholar
Rerison Catarino da Hora
  • Rerison Catarino da Hora
  • Departamento de Ciencias Agronomicas, Universidade Estadual de Maringa. Estrada da Paca, s/n, CEP: 87507-190, Bairro Sao Cristovao, Umuarama, PR, Brazil.
  • Google Scholar
Andre Felipe Moreira Silva
  • Andre Felipe Moreira Silva
  • Departamento de Ciencias Agronomicas, Universidade Estadual de Maringa. Estrada da Paca, s/n, CEP: 87507-190, Bairro Sao Cristovao, Umuarama, PR, Brazil.
  • Google Scholar
Philipp Naoki Yokoyama Kondo
  • Philipp Naoki Yokoyama Kondo
  • Departamento de Ciencias Agronomicas, Universidade Estadual de Maringa. Estrada da Paca, s/n, CEP: 87507-190, Bairro Sao Cristovao, Umuarama, PR, Brazil.
  • Google Scholar
Magnum Rodrigo da Silva
  • Magnum Rodrigo da Silva
  • Departamento de Ciencias Agronomicas, Universidade Estadual de Maringa. Estrada da Paca, s/n, CEP: 87507-190, Bairro Sao Cristovao, Umuarama, PR, Brazil.
  • Google Scholar
Jose Junior Severino
  • Jose Junior Severino
  • Departamento de Ciencias Agronomicas, Universidade Estadual de Maringa. Estrada da Paca, s/n, CEP: 87507-190, Bairro Sao Cristovao, Umuarama, PR, Brazil.
  • Google Scholar
Tiago Roque Benetoli da Silva
  • Tiago Roque Benetoli da Silva
  • Departamento de Ciencias Agronomicas, Universidade Estadual de Maringa. Estrada da Paca, s/n, CEP: 87507-190, Bairro Sao Cristovao, Umuarama, PR, Brazil.
  • Google Scholar


  •  Received: 17 December 2013
  •  Accepted: 21 February 2015
  •  Published: 05 March 2015

Abstract

The objective of this study was to investigate the agronomic and economic viability of lettuce intercropped with rocket over two cultivation seasons. The experimental designs were in randomized blocks in 3 × 3 + 2 factorial arrangement with four repetitions. The treatments were made up of a combination of three lettuce cultivars (Elisa, Veronica and Lucy Brown) and three cultivation systems (monocrop, intercrop with transplanted rocket and intercrop with seeded rocket) plus two other treatments (monocrop of seeded rocket and monocrop of transplanted rocket). Measurements of plant height were taken for the lettuce, number of leaves per plant were taken for both and stand count for the rocket. Total fresh matter per hectare was evaluated for both cultures. To evaluate the efficiency of the intercrop systems, the land equivalent ratio, total operating cost, gross revenue and economic results were determined. The intercropped rocket produced higher values for leaf area, and productivity and revenues were higher for the transplanted rocket mono cropping in both cultures. The characteristics of the lettuce were affected by the different cultivation systems and the treatments with loose-leaf lettuce, mainly in the first cultivation cycle, demonstrated higher productivity, land equivalent ratio and economic results compared to the lettuce mono cropping.

 

Key words: Lactuca sativa, Eruca sativa, viability.