African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Response of broccoli to sulphur application at topdressing in the presence or absence of organic compost at planting

Carla Veronica Correa*
  • Carla Veronica Correa*
  • Faculdade de Ciências Agronômicas, Rua Doutor José Barbosa de Barros, 1780, 18610-307, Botucatu-SP, Brazil.
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Aline Mendes de Sousa Gouveia
  • Aline Mendes de Sousa Gouveia
  • Faculdade de Ciências Agronômicas, Rua Doutor José Barbosa de Barros, 1780, 18610-307, Botucatu-SP, Brazil.
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Bruno Novaes Menezes Martins
  • Bruno Novaes Menezes Martins
  • Faculdade de Ciências Agronômicas, Rua Doutor José Barbosa de Barros, 1780, 18610-307, Botucatu-SP, Brazil.
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Ana Emília Barbosa Tavares
  • Ana Emília Barbosa Tavares
  • Faculdade de Ciências Agronômicas, Rua Doutor José Barbosa de Barros, 1780, 18610-307, Botucatu-SP, Brazil.
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Natalia de Brito Lima Lanna
  • Natalia de Brito Lima Lanna
  • Faculdade de Ciências Agronômicas, Rua Doutor José Barbosa de Barros, 1780, 18610-307, Botucatu-SP, Brazil.
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Antonio Ismael Inacio Cardoso
  • Antonio Ismael Inacio Cardoso
  • Faculdade de Ciências Agronômicas, Rua Doutor José Barbosa de Barros, 1780, 18610-307, Botucatu-SP, Brazil.
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Regina Marta Evangelista
  • Regina Marta Evangelista
  • Faculdade de Ciências Agronômicas, Rua Doutor José Barbosa de Barros, 1780, 18610-307, Botucatu-SP, Brazil.
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  •  Received: 05 July 2016
  •  Accepted: 17 August 2016
  •  Published: 01 September 2016

Abstract

The literature has confirmed the efficacy of sulphur (S) when growing Brassicaceae. However, there are no studies with this nutrient on broccoli. Therefore, the aim of this study was to evaluate the response of broccoli (hybrid Avenger) to sulphur rates applied at top dressing in the presence or absence of organic compost at planting. The experimental design was a randomized complete block, with ten treatments (5 x 2 factorial design) and four repetitions. Treatments consisted of five S (ammonium sulphate) rates (0, 31, 62, 93 and 124 kg ha-1); with organic compost (100 t ha-1) in planting or without organic compost in planting. After harvesting, head fresh matter, head diameter and number of leaves were evaluated. In general, head diameter, head height and fresh matter increased in all treatments by adding organic compost. A quadratic effect was observed for head fresh matter and head height by applying organic compost (100 tha-1), as the maximum values were 620.6 g and 17.2cm at the rate of 66.9 and 49.2 kg S ha-1, respectively.

Key words: Brassica oleracea var. italica, fertilization, sulphate.