VEGETATIVE REPRODUCTION OF STEM FRAGMENTS OF SENEGALIA SENEGAL (L.) BRITTON UNDER CONTROLLED CONDITIONS IN CHAD

Vegetative reproduction remains poorly understood and rarely mastered by local producers, limiting its integration into the Sahelian agricultural system. This study, conducted in the locality of Koundoul, 20 km south of N Djamena, aimed to contribute to the understanding of the vegetative reproduction of Senegaliasenegal by evaluating two approaches: stem segment cuttings and air layering, with and without the application of compost. The experiment was carried out on a 300 m 150 m plot of Senegaliasenegal. Air layering consisted of making incisions in young stems and applying compost to them, while other methods were left untreated. The success rate was 6.66%, compared to 0% without compost. Cuttings showed a higher rate of bud emergence in the presence of compost (60% vs. 30%), a survival rate of 68.41% with compost versus 33.3% without, and better leaf growth, with an average of 20 to 21.40 leaves observed. However, this superiority did not translate into actual success. However, none of the cuttings developed roots. Cuttings induced vegetative stimulation without sufficient rooting. A dissociation between leaf growth and rhizogenesis was observed, indicating physiological instability and low viability of the cuttings. Air layering suggested an ability to produce viable plants that could be transferred to a natural environment.