AGRO-ECONOMIC EFFICIENCY OF THE INTERCROPPING OF CARROT X COWPEA-VEGETABLE UNDER DIFFERENT SPATIAL ARRANGEMENTS AND POPULATION DENSITIES

Authors

  • Giorgio Mendes Ribeiro Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Francisco Bezerra Neto Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Jailma Suerda Silva de Lima Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Maiele Leandro da Silva Universidade Estadual de Mato Grosso do Sul, Aquidauana, MS
  • Aurélio Paes Barros Júnior Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Elizangela Cabral dos Santos Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN

DOI:

https://doi.org/10.1590/1983-21252017v30n404rc

Keywords:

Daucus carota. Vigna unguiculata. Intercropping system.

Abstract

The objective of this study was to evaluate the agro-economic efficiency of the intercropping of carrot with cowpea-vegetable under different spatial arrangements and population densities in the semi-arid conditions of the Brazilian Northeast. The study was conducted at the "Rafael Fernandes" Experimental Farm of the Universidade Federal Rural do Semi-Árido (UFERSA) during the period July 2013 to February 2014. The experimental design was of randomized complete blocks with four replications and treatments arranged in a 3 × 4 factorial scheme, where the first factor consisted of spatial arrangements (2:2; 3:3 and 4:4) and the second factor by population densities of cowpea-vegetables (100, 80, 60 and 40% of the recommended population in sole crop [RPSC]). All treatments were fertilized with roostertree (Calotropis procera [Ait.] R.Br.), which is a spontaneous species of the Caatinga biome. The indices of agronomic efficiency of the intercropping systems assessed were: land equivalent ratio, productive efficiency index and score of the canonical variable. The following economic indicators were also evaluated: gross income, net income, rate of return and profit margin. The agro-economic efficiency of the intercropping system of carrot with cowpea-vegetable was influenced by the spatial arrangements, with the 2:2 arrangements standing out from the others. The greatest agro-economic efficiency of the intercropping of carrot with cowpea-vegetable was obtained in the population density of 100% of the RPSC when the value of the productive efficiency index was 0.75.

Author Biographies

  • Giorgio Mendes Ribeiro, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
    Possui graduação em Agronomia pela Universidade Federal Rural do Semi-Árido (1995) e mestrado em Irrigação e Drenagem pela Universidade Federal Rural do Semi-Árido (2008). Atualmente é assistente em administração da Universidade Federal Rural do Semi-Árido e doutorando em fitotecnia pe UERSA. Tem experiência na área de Engenharia Agrícola, com ênfase em Irrigação e Drenagem, Produção de Hortaliças, atuando principalmente nos seguintes temas: empreendedorismo, incubadora, extensão, analise foliar e nutrição de plantas e implantação de hortas.
  • Francisco Bezerra Neto, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
    Phd em agronomia. Departamento de Ciências Vegetais
  • Jailma Suerda Silva de Lima, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
    Doutora em Agronomia
  • Maiele Leandro da Silva, Universidade Estadual de Mato Grosso do Sul, Aquidauana, MS
    Doutora em Agronomia
  • Aurélio Paes Barros Júnior, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
    Doutor em Agronomia
  • Elizangela Cabral dos Santos, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
    Doutora em Agronomia

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Published

14-06-2017

Issue

Section

Agronomy