African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6693

Full Length Research Paper

Study of the influence of physico-chemical characteristics of cassava (Manihot esculenta Crantz) stem on its varietal vulnerability to termites ravaging cuttings Odontotermes sp. aff. Erraticus

Abdoulaye FAYE*
  • Abdoulaye FAYE*
  • Department of Plant Biology, Faculty of Science and Technology, University Cheikh Anta Diop, BP: 5005 Dakar-Fann, Senegal.
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Dieynaba SALL SY
  • Dieynaba SALL SY
  • Senegalese Institute of Agricultural Research (ISRA), BP: 3120 Dakar, Senegal.
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Papa Demba KANE
  • Papa Demba KANE
  • Senegalese Institute of Agricultural Research (ISRA), BP: 3120 Dakar, Senegal.
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Demba Farba MBAYE
  • Demba Farba MBAYE
  • USAID/ERA, Street 26-Ngor, BP: 24690 Ouakam, Dakar, Senegal.
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Djibril SANE
  • Djibril SANE
  • Department of Plant Biology, Faculty of Science and Technology, University Cheikh Anta Diop, BP: 5005 Dakar-Fann, Senegal.
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  •  Received: 24 November 2014
  •  Accepted: 07 April 2015
  •  Published: 07 May 2015

Abstract

Cassava (Manihot esculenta Crantz) includes a multitude of varieties different by several parameters, each of them with specific characteristics. Some of these varietal specificities may constitute the seat of an influence on the vulnerability of this plant to stresses. In this present study, we proposed to assess the impact of physico-chemical parameters of the cassava stem on its varietal sensitivity to termites ravaging cuttings Odontotermes sp. aff. erraticus in Senegal. At the end of experiments conducted in laboratory, we have seen that the cassava varieties in which the stem bark was thick and hard with a reduced diameter of the marrow were more tolerant to the action of these pests, while those with thin and fragile bark and large stem marrow were more sensible. However the pH of the cassava stem did not affect the incidence of attack of the cuttings by the termites.

 

Key words: Cassava, cuttings, tolerance, physico-chemical parameters, Odontotermes sp.