Providing Fast Fodder Technology from Barley Crop by Using a Hydroponic System with Different Gibberellin Concentrations

Background and Objective: Because of the lack of feed in Iraq, this article studied the effect of the cultivation method and different concentrations of gibberellin for getting quick feed with a high green yield of barley over the year. Materials and Methods: Two technology experiments were conducted during the autumn season of 2019-2020 in the laboratories and experimental field of the College of Agriculture, Al-Qasim Green University. This study included two factors: The first is the cultivation method (A1: Hydroponics, A2: Cultivation in the field as a comparative treatment) and the second included three concentrations of gibberellin (C0: 0 ppm, C1: 50 ppm, C2: 100 ppm), the study traits were: Number of leaves per plant, leaf area, chlorophyll content, green fodder yield, dry fodder yield and protein contents. A Randomized Complete Block Design was used with three replications, a factorial experiment was used as an arrangement of the experiment within the Randomized Block Design with three replications. The plants were cut after 8 days after planting. Results: The hydroponic treatment was superior in leaf area, chlorophyll content, green fodder yield, dry fodder yield and protein content, the 100 ppm concentration of GA was superior in leaf area, green fodder yield, dry fodder yield and protein content, the interaction between the hydroponic system and 100 ppm concentration of GA was given higher leaf area, green fodder yield, dry fodder yield and protein content. Conclusion: The use of the hydroponics system as a cultivation method of barley gave a significant superiority compart to field cultivation with gibberellin 100 ppm.