Agronomic performance of soybean cultivars under two sowing times in the savanna of Piauí State, Brazil

  • Francisco de Alcântara Neto Universidade Federal do Piauí-UFPI
  • Fabiano André Petter Universidade Federal do Piauí-UFPI
  • Bruno Ettore Pavan Universidade Federal do Piauí-UFPI
  • Cirio Régis Schmitt Universidade Federal do Piauí-UFPI
  • Fernandes Antônio de Almeida Universidade Federal do Piauí-UFPI
  • Leandro Pereira Pacheco Universidade Federal do Piauí-UFPI
  • Adelfran Cavalcante Piauilino Universidade Federal do Piauí-UFPI
Keywords: Glycine max, grain yield, competition of cultivars

Abstract

The objective of this study was to evaluate the agronomic performance of soybean cultivars in anagricultural area located in the Serra do Quilombo (Cerrado of Piaui State, Brazil), in two growingseasons (2008/2009 and 2009/2010) and two sowing dates (15/12 and 03/01) were conducted fieldtrials of varieties, with randomized block design with four replications in a factorial 4 x 2. The cultivarswere M9144RR, M9056RR, M8867RR and P99R01. We evaluated the height of first pod, plant heightand grain yield. There was no significant effect on the parameters evaluated for sowing dates.The joint analysis between growing seasons and showed similar behavior in times of cultivars. Theaverage yield was not affected for sowing times within each season. The 2009/2010 season hadgrain yields significantly lower than those of the 2008/2009 season, due to the occurrence of waterdeficit during the vegetative stage to the beginning of the beginning of flowering and grain filling in2009/2010. We conclude that it is possible to soybean planting until early January in the area of Piauisavanna approached, indicating little effect of the photoperiod for that region.

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Author Biographies

Francisco de Alcântara Neto, Universidade Federal do Piauí-UFPI
Professor do Programa de Pós-Graduação em Agronomia - Fitotecnia da UFPI/CPCE
Fabiano André Petter, Universidade Federal do Piauí-UFPI
Professor do Programa de Pós-Graduação em Agronomia - Fitotecnia da UFPI/CPCE
Bruno Ettore Pavan, Universidade Federal do Piauí-UFPI
Professor do Programa de Pós-Graduação em Agronomia - Fitotecnia da UFPI/CPCE
Cirio Régis Schmitt, Universidade Federal do Piauí-UFPI
Graduando em Agronomia UFPI/CPCE
Fernandes Antônio de Almeida, Universidade Federal do Piauí-UFPI
Professor do Programa de Pós-Graduação em Agronomia - Fitotecnia da UFPI/CPCE
Leandro Pereira Pacheco, Universidade Federal do Piauí-UFPI
Professor do Programa de Pós-Graduação em Agronomia - Fitotecnia da UFPI/CPCE
Adelfran Cavalcante Piauilino, Universidade Federal do Piauí-UFPI
Mestrando do Programa de Pós-Graduação em Agronomia - Fitotecnia da UFPI/CPCE
Published
18-09-2012
How to Cite
Alcântara Neto, F. de, Petter, F. A., Pavan, B. E., Schmitt, C. R., Almeida, F. A. de, Pacheco, L. P., & Piauilino, A. C. (2012). Agronomic performance of soybean cultivars under two sowing times in the savanna of Piauí State, Brazil. Comunicata Scientiae, 3(3), 215-219. https://doi.org/10.14295/cs.v3i3.107
Section
Scientific Note