African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Effect of seed component ratios and cutting regime on the performances of annual ryegrass and burr medic mixtures

Giovanni Antonio Re*
  • Giovanni Antonio Re*
  • Consiglio Nazionale delle Ricerche, Istituto per il Sistema Produzione Animale in Ambiente Mediterraneo, Traversa La Crucca 3, località Baldinca, 07100 Sassari, Italy.
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Claudio Porqueddu
  • Claudio Porqueddu
  • Consiglio Nazionale delle Ricerche, Istituto per il Sistema Produzione Animale in Ambiente Mediterraneo, Traversa La Crucca 3, località Baldinca, 07100 Sassari, Italy.
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Federico Sanna
  • Federico Sanna
  • Consiglio Nazionale delle Ricerche, Istituto per il Sistema Produzione Animale in Ambiente Mediterraneo, Traversa La Crucca 3, località Baldinca, 07100 Sassari, Italy.
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Leonardo Sulas
  • Leonardo Sulas
  • Consiglio Nazionale delle Ricerche, Istituto per il Sistema Produzione Animale in Ambiente Mediterraneo, Traversa La Crucca 3, località Baldinca, 07100 Sassari, Italy.
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Antonio Franca
  • Antonio Franca
  • Consiglio Nazionale delle Ricerche, Istituto per il Sistema Produzione Animale in Ambiente Mediterraneo, Traversa La Crucca 3, località Baldinca, 07100 Sassari, Italy.
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Giovanna Piluzza
  • Giovanna Piluzza
  • Consiglio Nazionale delle Ricerche, Istituto per il Sistema Produzione Animale in Ambiente Mediterraneo, Traversa La Crucca 3, località Baldinca, 07100 Sassari, Italy.
  • Google Scholar
Simonetta Bullitta
  • Simonetta Bullitta
  • Consiglio Nazionale delle Ricerche, Istituto per il Sistema Produzione Animale in Ambiente Mediterraneo, Traversa La Crucca 3, località Baldinca, 07100 Sassari, Italy.
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  •  Received: 21 April 2016
  •  Accepted: 08 July 2016
  •  Published: 04 August 2016

Abstract

A research was carried out in Sardinia (Italy) to identify the best combination and management in binary mixtures of Lolium rigidum Gaudin Nurra (L) and Medicago polymorpha L. Anglona (P) new released varieties of both species. Two pure stands (L100P0 and L0P100) and three mixtures (L75P25, L50P50 and L25P75) were compared under two cutting regimes; a commercial mixture was also included in the experiment as test. Forage yield and quality, biological efficiency, interspecific interference and competitive ability of both species were assessed. Total dry matter yield ranged from 2.2 to 5.6 t ha-1 (two-cuttings) and from 2.3 to 4.9 t ha-1 in commercial mixture and L25P75 (three-cuttings). The association grass-legume showed positive effects on the control of unsown species. Crude protein yield, neutral detergent fibre, acid detergent fibre and acid detergent lignin concentration significantly varied between mixtures. The highest protein yield was obtained in the L25P75 mixture, reaching 1308 kg ha-1 in two-cuttings, as well as the best combination for quality and yield that maximised the synergic interaction effects between species.

Key words: Annual self-reseeding species, forage quality, grass legume competition, mixtures.