AGRONOMIC AND PRODUCTIVE CHARACTERISTICS OF SUNFLOWER INTERCROPPED WITH FORAGE IN A CROP-LIVESTOCK INTEGRATION SYSTEM

Authors

  • Jamile Maria da Silva dos Santos Center for Agricultural, Environmental and Biological Sciences, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA http://orcid.org/0000-0002-7509-3147
  • Clovis Pereira Peixoto Center for Agricultural, Environmental and Biological Sciences, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA http://orcid.org/0000-0002-6618-1700
  • Marcos Roberto da Silva Center for Agricultural, Environmental and Biological Sciences, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA http://orcid.org/0000-0001-5808-9130
  • Ademir Trindade Almeida Center for Agricultural, Environmental and Biological Sciences, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA http://orcid.org/0000-0001-5233-7607
  • Ana Maria Pereira Bispo dos Santos Center for Agricultural, Environmental and Biological Sciences, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA http://orcid.org/0000-0001-8898-2624

DOI:

https://doi.org/10.1590/1983-21252019v32n224rc

Keywords:

Helianthus annuus L. Intercropping. Forage plants. Grass.

Abstract

The objective of this study was to evaluate the agronomic characteristics and yield of a sunflower crop grown together with forages in a crop-livestock integration system. The experiment was carried out in a randomized complete block design, in a 3×3 + 1 factorial scheme. Three sunflower intercropping with forage plants [sunflower + Urochloa ruziziensis (SB); sunflower + Panicum maximum cv. Tanzania (SP); sunflower + Urochloa ruziziensis + Cajanus cajan (SBGu)], sown in three ways [simultaneous sowing (SS), delayed sowing (DS), and simultaneous sowing with herbicide/graminicide (SSH) application], with the monocroped sunflower as a control, with three years of cultivation (2013, 2014, and 2015). The following characteristics were evaluated: plant height, stalk diameter, head diameter, number of achenes per heads, the mass of thousand achenes, harvest index, and the productivity of achenes. Data were submitted to analysis of variance, and the means were compared by the Tukey and Dunnett tests at 5% probability. The SB and SBGu intercropped promote greater sunflower productivity. The forage Panicum maximum cv. Tanzania in intercropped with sunflower reduces plant production components and productivity. Lapsed sowing delayed and simultaneous sowing with herbicide/graminicide application promote higher productivity of sunflower.

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Published

22-05-2019

Issue

Section

Zootechnics