Path analysis of soybean yield in the micro region of Alto Médio Gurguéia

  • Francisco de Alcantara Neto Universidade Federal do Piauí
  • Geraldo de Amaral Gravina Universidade Estadual do Norte Fluminense Darcy Ribeiro
  • Marinete Martins de Sousa Monteiro Universidade Federal do Piauí
  • Fernanda Brito de Morais Universidade Federal do Piauí
  • Fabiano André Petter Universidade Federal do Piauí
  • José Anchieta Alves de Albuquerque Universidade Federal de Roraima
Keywords: Glycine max, phosphorus, cerrado

Abstract

The objective of this work was to evaluate, by using path analysis, the influence of some agronomic characters on soybean yield. An experiment was conducted in cerrado soil, in Serra do Quilombo, Bom Jesus, Southern of Piaui State, from december 2007 to april 2008, in an Oxisol. The experimental design was randomized blocks, with treatments consisting of six levels of phosphorus (0, 40, 60, 100, 120 and 140 kg P2O5 ha-1) with four replications. Some characteristics were evaluated: plant height, height of first pod insertion, number of nodes per plant, number of string beans per plant, 100 grains weight, dry weight and total grain production per plant. The number of pods per plant was the yield component that showed the greatest direct effect on dry matter and total grain production per plant. The number of nodes per plant had a strong indirect effect on dry matter production. The variable height of first pod insertion showed lower correlation with the other variables.

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Author Biographies

Francisco de Alcantara Neto, Universidade Federal do Piauí

Campus Universitário Profa. Cinobelina Elvas

Departamento de Engenharia Agronômica

Geraldo de Amaral Gravina, Universidade Estadual do Norte Fluminense Darcy Ribeiro

UENF/CCTA/LEAG

Marinete Martins de Sousa Monteiro, Universidade Federal do Piauí

Campus Universitário Profa. Cinobelina Elvas

Departamento de Engenharia Agronômica

Fernanda Brito de Morais, Universidade Federal do Piauí

Campus Universitário Profa. Cinobelina Elvas

Departamento de Engenharia Agronômica

Fabiano André Petter, Universidade Federal do Piauí

Campus Universitário Profa. Cinobelina Elvas

Departamento de Engenharia Agronômica

José Anchieta Alves de Albuquerque, Universidade Federal de Roraima

Campus do Cauamé

Departamento de Engenharia Agronômica

Published
31-08-2011
How to Cite
Alcantara Neto, F., Gravina, G., Monteiro, M., Morais, F., Petter, F., & Albuquerque, J. (2011). Path analysis of soybean yield in the micro region of Alto Médio Gurguéia. Comunicata Scientiae, 2(2), 107-112. https://doi.org/10.14295/cs.v2i2.74
Section
Original Article