Effects Of Different Cultivation Media On Vegetative Growth, Ecophysiological Traits And Nutrients Concentration In Strawberry Under Hydroponic And Aquaponic Cultivation Systems

摘要

Aquaponics is the science of integrating the production of fish and plants in a symbiotic environment inwhich fish waste is used as fertilizer. The characteristics of the materials used as substrate in soilless culturesystems, directly and indirectly affect the plant growth and production. Therefore, in order to study the effect ofdifferent substrates (various ratios of perlite and cocopeat) on growth and development of strawberry inhydroponic and aquaponic cultivation systems, a greenhouse experiment was conducted as factorial experimentbased on a completely randomized design with three replications. The results of statistical analysis revealed thatdry weight (leaf, crown and root), the number of runners, leaf area, SPAD index for old leaves, Fv/Fm, theconcentrations of N, K, P, Fe and Mg in leaves and the yield was significantly higher in hydroponic than inaquaponic (except for the substrate of sole perlite). The concentrations of Ca, Zn (except for the substrate of solecocopeat) and Mn (except for the substrates of sole perlite or cocopeat) in leaves and SPAD index of youngleaves were higher in aquaponic than in hydroponic. The remaining measured traits were not affected by theculture system. In hydroponic system, the substrates of sole perlite or cocopeat were not recognized as optimumsubstrates; therefore, it is recommended to use their mixture as substrate, while in aquaponic system, thesubstrates with higher percentage of perlite had better performance and are recommended for strawberrycultivation.