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L’objectif de ce travail etait de definir un itineraire de culture favorable a la croissance des plants d’ananas MD2 en fonction des saisons de mise en culture dans la localite de Bonoua, au Sud - Est de la Cote d’Ivoire. Les effets de trois lits de plantation (terrain plat, billon sans un film polyethylenique et billon recouvert avec un film polyethylenique) ; de deux densites de plantation (50000 et 70000 plants/ha) ; de quatre types de fumure [F1 (Uree + Potasse) ; F2 (Uree + Potasse + Oligoelements) ; F3 (Uree + Potasse + Engrais complet) et F4 (Uree + Potasse + Engrais complet + Oligoelements)] et de deux frequences d’application de fertilisants (3AP et 7AP) ont ete testes. Au terme de la phase vegetative du cycle, les comparaisons intersaisons des parametres mesures ont montre que quels que soient les traitements appliques, le nombre de feuilles vivantes et la longueur de la feuille D les plus importants, ont ete obtenus lorsque les plantings ont ete realises a la grande saison pluvieuse. Les masses des feuilles D ont ete superieures au seuil de 70 g pour les plantings effectues pendant la petite et la grande saison pluvieuse, ainsi qu’a la grande saison seche. La confection de billons a permis aux plants d’ananas MD2 d’avoir une bonne croissance vegetative en saison seche dans la localite de Bonoua.Mots cles : Ananas MD2, croissance, feuille D, saison, Fertilisant, Cote d’Ivoire. English Title: Effects of bedding, planting density and fertilization on the vegetative growth of pineapple (Ananas comosus L., var. MD2) at different planting seasons in the Bonoua zone in Cote d'Ivoire The objective of this work was to define a cultivation itinerary favorable to the growth of MD2 pineapple plants according to the growing seasons in the locality of Bonoua, in the South - East of Cote d'Ivoire. The effects of three planting beds (flat ground, ridge without a polyethylene film and ridge covered with a polyethylene film); two planting densities (50,000 and 70,000 seedlings/ha); four types of manuring [F1 (Urea + Potash)]; F2 (Urea + Potash + Trace elements); F3 (Urea + Potash + Complete fertilizer) and F4 (Urea + Potash + Complete fertilizer + Trace elements)] and two fertilizer application frequencies (3AP and 7AP) were tested. At the end ofthe vegetative phase of the cycle, inter-season comparisons of the measured parameters showed that, regardless of the treatments applied, the most important number of live leaves and leaf length D were obtained when the plantings were carried out during the long rainy season. The D-leaf masses were above the threshold of 70 g for plantings carried out during the short and long rainy seasons, as well as during the long dry season. The making of ridges allowed the MD2 pineapple plants to have a good vegetative growth during the dry season in the locality of Bonoua.Keywords: Pineapple MD2, growth, leaf D, season, Fertiliser, Cote d’Ivoire.

international journal of biological and chemical sciences

Effets du lit, de la densité de plantation et de la fertilisation sur la croissance végétative de l’ananas (Ananas comosus L., var. MD2) à différentes saisons de planting dans la zone de Bonoua en Côte d’Ivoire