Speaker
Description
In Morocco, Rosmarinus officinalis is among the most coveted aromatic plants for its leaves and essential oil. Nevertheless, the process of extraction of the latter generates a large quantity of residual water whose valorization will ensure the sustainable management of the territories of rosemary and the development of the networks associated with this resource. In this context, we evaluated the fertilizing efficiency of this co-product resulting from the hydrodistillation of rosemary on certain agronomic and biochemical parameters of the tomato. In this context, treatment tests with residual water were carried out on the tomato under the greenhouse. Two treatment methods at different concentrations (12.5% 25% 50%) were made. The culture was followed for 60 days and the treatment was applied once a week. After that, the agronomic and biochemical parameters of all treatments were evaluated. The physicochemical characterization of the rosemary residual water showed a richness in mineral elements, namely nitrogen, phosphorus, potassium, calcium, and macromolecules such as sugars, proteins, and polyphenols, as well as salinity and slight acidity. Foliar application of the 50% extract had significant effects on the parameters studied compared to the control, including aerial size (21.32%), aerial fresh biomass (94.75%), aerial dry biomass (69.42%), and chlorophyll (28.24%). Similarly, the plants irrigated with the residual extract at 12.5%, were improved in the aerial size (44.51%), aerial fresh biomass (38.84%), leaf area (29.62%), and chlorophyll content (33.33%). However, irrigation with 50% residual water significantly reduced the above parameters compared to the control. Therefore, applying residual water, either at a concentration of 12.5% for irrigation, or 50% per spraying would be a promising approach for improving the growth and yield of the tomato, using an ecological product for sustainable agriculture and adding value to rosemary.
