Practical identification key of Digitaria ciliaris (Retz.) Koeler and Digitaria horizontalis Willd. (Poaceae): two harmful weeds of crops in Senegal

Ablaye Ngom; Mame Samba Mbaye; Madiop Gueye; Abdoul Aziz Camara; Kandioura Noba

doi:10.30574/gscbps.2019.8.2.0144

Authors

Ablaye Ngom Laboratoire de Botanique - Biodiversité, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005, Dakar-Fann, Sénégal.
Mame Samba Mbaye Laboratoire de Botanique - Biodiversité, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005, Dakar-Fann, Sénégal.
Madiop Gueye Laboratoire de Botanique - Biodiversité, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005, Dakar-Fann, Sénégal.
Abdoul Aziz Camara Laboratoire de Botanique - Biodiversité, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005, Dakar-Fann, Sénégal.
Kandioura Noba Laboratoire de Botanique - Biodiversité, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005, Dakar-Fann, Sénégal.

DOI:

https://doi.org/10.30574/gscbps.2019.8.2.0144

Keywords:

Discriminant traits, Key, Digitaria ciliaris, Digitaria horizontalis, Weeds

Abstract

Digitaria ciliaris and D. horizontalis are among the most common and harmful weed species of crops in Senegal. Their identification by taxonomists and agronomists is not easy because of their close similarity. The objective of this study is to define their morphological differences and to provide a practical identification key. The results of the study show that Digitaria ciliaris and D. horizontalis are differentiated from three characters in the vegetative and reproductive systems. An illustrated table of these discriminating traits, serving as a key of practical determination, is proposed.

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