[en] Production of leafy-green crops in indoor multi-layer hydroponic system with artificial light and controlled environment can be economically challenging. Cultivating high-added value crops such as medicinal plants may not be economically as difficult. Euphorbia peplus and Artemisia annua are medicinal plants with potential applications in para- and pharmaceutical sectors. Growing indoors in a controlled environment requires appropriate adjustment of abiotic factors to optimize crop growth. The objectives of the study were the optimization of the biomass of E. peplus and A. annua and the calculation of their cost price under indoor hydroponic cultivation systems. Shoot biomass, apical height, dry matter, foliar surface and the maximum quantum yield of primary photochemistry were measured under two nutrient solutions and three substrates for E. peplus, and under two light intensity and CO2 levels for A. annua. Experiments on E. peplus were realized on 24-plants tray with 6 tray-repetitions per combination, for a total of 864 plants tested. Experiments on A. annua ‘s were realized on 12-plants tray with 2 tray-repetitions per combination, for a total of 96 plants tested. Results for E. peplus showed that no combination of substrates and nutrient solutions seems to be more effective for all the parameters tested, but the combination of one nutrient solution and rockwool allowed a better accumulation of shoot biomass and apical height. In the case of A. annua, a light intensity of 500 PPFD combined with CO2 concentration at 900 µmol mol-1 allowed an increase of shoot biomass by 94% as compared to 250 PPFD and same CO2 level. The cost of producing 1 kg of fresh shoot E. peplus and A. annua varied respectively from €146 to €198, and €66 to €121. Factors that influence the cultivation cost are discussed.
Disciplines :
Agriculture & agronomy
Author, co-author :
Bafort, Françoise ; Université de Liège - ULiège > TERRA Research Centre > Gestion durable des bio-agresseurs
Bouhadada, A.; Integrated and Urban Plant Pathology Laboratory, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
Ancion, N.; Integrated and Urban Plant Pathology Laboratory, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium ; Smart City Institute, Liège, Belgium
Crutzen, Nathalie ; Université de Liège - ULiège > HEC Liège : UER > UER Management : Sustainable Strategy ; Smart City Institute, Liège, Belgium
Jijakli, Haissam ; Université de Liège - ULiège > TERRA Research Centre > Gestion durable des bio-agresseurs
Language :
English
Title :
Optimization of hydroponic production of the medicinal plants Euphorbia peplus and Artemisia annua in container
This research work was funded by the European Union and the Walloon Region with the European Funds for Regional Development within the framework of the VERDIR Tropical Plant Factory program (Optibiomasse project) (form number: 814687-481490). Economic analysis support was funded by the Interr-eWgeNstorEtuhrope Groof project (form number: NWE 474).
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