EFFECTS OF ROW SPACING ON AGRONOMIC CHARACTERS OF THREE DOUBLE CROPPED SUNFLOWER HYBRIDS

Authors

  • Alessandro Guerra da Silva Fesurv
  • Eduardo Bezerra de Morães
  • Rodrigo Pires
  • Cláudio Guilherme Portela de Carvalho
  • Ana Cláudia Barneche de Oliveira
  • Itamar Rosa Teixeira

Keywords:

Helianthus annuus, plant arrangement, yield components, double cropping

Abstract

The objective of the research was to evaluate the effects of row spacing on agronomic characteristics of three sunflower hybrids. The trial was carried out in Rio Verde, Goiás State, Brazil. The hybrids tested were Agrobel 960, BRHS 5, and Hélio 251, in four row spacing (40 cm, 50 cm, 70 cm, and 80 cm), in a population of 45.000 plants ha-1. The hybrids were planted in March 12, 2005, after bean grown in the summer season, and harvested in July 5. Achene yield and thousand weight, capitulum size, number of achenes per capitulum, and plant height were evaluated. The Agrobel 960 hybrid presented the largest achene yield and the smallest height. The larger yield of Agrobel 960 was attributed to the higher number of achenes per capitulum. The sunflower hybrids did not present significant differences for achene thousand weight and capitulum size. The 40 cm row spacing presented larger achene yield and number of achenes per capitulum. However, it did not influence the achene thousand weight, capitulum size, and plant height.

 

KEY-WORDS: Helianthus annuus; plant arrangement; yield components; double cropping.

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Author Biographies

Alessandro Guerra da Silva, Fesurv

Programa de Pós-Graduação em Produção Vegetal, Fesurv-Universidade de Rio Verde, Campus Universitário Fazenda Fontes do Saber, Caixa Postal 104, CEP: 75901-970, Rio Verde, GO. E-mail: silvaag@yahoo.com.br.

Telefone: 064 3620 2211

Eduardo Bezerra de Morães

Programa de Pós-Graduação em Produção Vegetal, Fesurv-Universidade de Rio Verde, Campus Universitário Fazenda Fontes do Saber, Caixa Postal 104, CEP: 75901-970, Rio Verde, GO.

Rodrigo Pires

Programa de Pós-Graduação em Produção Vegetal, Fesurv-Universidade de Rio Verde, Campus Universitário Fazenda Fontes do Saber, Caixa Postal 104, CEP: 75901-970, Rio Verde, GO.

Cláudio Guilherme Portela de Carvalho

Embrapa Soja, Londrina, PR.

Itamar Rosa Teixeira

Universidade Estadual de Goiás, Ipameri, GO.

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Published

2009-05-27

How to Cite

SILVA, A. G. da; MORÃES, E. B. de; PIRES, R.; CARVALHO, C. G. P. de; OLIVEIRA, A. C. B. de; TEIXEIRA, I. R. EFFECTS OF ROW SPACING ON AGRONOMIC CHARACTERS OF THREE DOUBLE CROPPED SUNFLOWER HYBRIDS. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 39, n. 2, p. 105–110, 2009. Disponível em: https://revistas.ufg.br/pat/article/view/3551. Acesso em: 17 jul. 2024.

Issue

v. 39, n. 2, Apr./Jun. 2009

Section

Research Article

License

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