The study on the effect of soil fertility and the supply of mineral and organic fertilizers on the success of argan transplantation in the real field was conducted for the first time in the field by the INRA Agadir team. Three sites were chosen Taksbit (Massa); Anzad (Ait Baha) and Tinzert (Taroudant). For the knowledge of the soil fertility status of the 3 sites, soil analyzes were carried out per site. Overall, the results recorded showed that the soils studied have very limited fertility. Indeed, they have a rate of organic matter, a nitrogen content, phosphorus, potassium assimilable, trace elements that are below normal values. Similarly, the soils of the different sites have an alkaline pH and in the presence of a plant material with an undeveloped root system, the assimilation of nutrients becomes more difficult. In this sense, two trials in the Taksbit and Tinzert sites were conducted on the effect of inputs of organic (local manure) and mineral fertilizers. These field trials have shown that the contribution of mineral (N, P, K) and organic fertilizers improves the transplantation of young argan plants by promoting their survival and growth in height and diameter. In the medium term, manure and biocomposte improve soil fertility.

Key words: Argan tree, soil fertility, transplants, organic and minerals fertilizers