Document Type: Original Article

Author

University of August 20 Skikda 1955. Faculty of Science. Department of Agronomy, Algeria

Abstract

The study of citrus weeds in the Skikda region during the 2017/2018 crop year included 40 phytoecological surveys of different crops. They were distributed throughout the study area in order to take into account the variability of ecological and Agronomic factors. The results obtained by the Correspondence Factor Analysis (CFA) highlight two groups of surveys including two groups of species. These results explain the distribution of citrus weeds in the Skikda region according to climate and edaphic conditions. The appearance of weed species was selective, for example, Oxalis Latifolia. Kunt. is a very common and abundant species in the more or less humid northern zone, whereas it is almost absent in the southern zone of the study area. On the other hand, Papaver rhoeas. was frequent and abundant in the southern zone, which is a somewhat dry zone, was almost absent in the northern zone.

Keywords

Aymonin G. 1965. The phenomenon of ‘adventicity’. 2e Colloque sur la Biologie des Mauvaises Herbes, p. 18, Grignon (In French).

Barralis G. 1976. Methods of studying adventitious groupings of annual crops: Application to the Coast Golden. V Coll. Inter. Biol., Ecol. And Syst. Weeds, Dijon : pp 59-68.

Buhler S, Leroux G.D. 1997. Use of autumn rye (Secale cereale) against weeds in the pumpkin. Department of Plant Science, Laval University, Quebec, G1K 7 (Cannada): 4 p.

Fenni M. 2003. Study of Weeds of Winter Cereals of the Constantine High Plains. dynamics, phenology and biology of bromes. Ph.D. thesis, University of Setif Algeria. 165 p.

Jauzein P. 2001. Biodiversity of cultivated fields: floristic enrichment. INRA environmental file, 21: 22 p.

Jauzein P. 2001. Floristic Depletion of Cultivated Fields Agriculture and Plant Biodiversity. INRA environmental file, 21: 43-64.

Le Bourgeois T. 1993. Weeds in cotton rotation in North Cameroon (Africa). Amplitude of habitat-Degree of infestation, Thesis Doc, Montpellier II, Montpellier (France) : 249 p.

Le Bourgeois T, Marnotte P. 2002. La lutte contre les mauvaises herbes Memento de l’Agronome, CIRAD-GRET, Ministère des Affaires Etrangères, Paris. pp. 663-684

Lebreton G, Le bourgeois T. 2005. Analysis of the adventitious flora of the lentil in Cilaos - Réunion. Cirad- Ca / 3P; UMR PVBMT : 20 p.

Legendre L, Legendre P. 1984. Digital ecology. 1: multiple processing of ecological data. 2nd ed. Masson, Paris : 260 p.

Loudyi M.C, Gordon M, El-Khairy D. 1995. Influence of ecological factors on the distribution of Weeds of Sais cultures (Central Morocco). Weed Res. 35: 225-240.

Maillet J. 1981. Evolution of the adventitious flora in Montpelliérais under the pressure of techniques farming. Thesis Doc, USTL, Montepellier (France): 200 p.

Soufi Z. 1988. Les principales mauvaises herbes des vergers dans la région maritime de Syrie. Weed Res. 199-206.

Statistica 2007. Statistica 8.0 CD-ROM, Copyright © Stat soft, INC. 1984-2007.

Traore K, Mangara A. 2009. Phyto-Ecological Study of Weeds in Agro-Ecosystems of the Mé and Dabou. Euro J Sci Res. 31: 519-533.