Abstract
The paper aims to quantify the difficulties in the transplantation and development of argan tree in the Algerian Western Sahara. A diagnosis of the regeneration by reforestation was established on two experimental stations: Tindouf and Adrar, during six consecutive years. The relation between the bioclimatic conditions and the rates of resumption, the phenology and the growth of Argania spinosa were analysed. The results showed the possibilities of introducing the species by seeding in both sites of plantations which belong to a dry and hyper dry Mediterranean continental and semi continental climate. The success rates vary between 26.4 and 33.8%, in Adrar and Tindouf respectively. Our results also showed the effect of watering on the growth of plants. Indeed, a regular regime of irrigation gave plants with an average height of 185 cm, in the station of Adrar, against 125 cm to Tindouf. The monthly description of phenological stages of the Argan tree represents a biennial cycle with delayed flowering of the floral buds during the hottest summer period of the year.
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