The effect of foliar spraying with some natural extracts and gibberellin on the growth and productivity of faba bean (Vicia faba L.)

Najwa Bassam Ahmed*(1), Nour Mohamed Rashad Alqabbani(1), Luna Mohsen Ahmad(2), and Safaa Fahed Najla(1)

(1). Department of Horticulture Science, Faculty of Agriculture, University of Damascus, Syria.

(2). General Commission for Scientific Agricultural Research, Damascus, Syria.

(*Correspondent: Dr. Najwa Ahmed najwa.ahmed@damascusuniversity.edu , phone: 0966695318)

Received: 12/6/2024          Accepted: 28/7/2024

Abstract: 

The research was carried out at Abi Jerash Farm – Faculty of Agricultural, Damascus University, during the 2023-2024 season, to study the effect of foliar spraying with wood vinegar (10 ml/l), seaweed (10 g/l), and gibberellin (50 mg/l) on the growth of faba bean, some components of productivity and seed content of proteins and NPK. The experiment was designed according to completely randomized blocks, with 3 replicates per treatment. The results showed that foliar spraying with wood vinegar, seaweed and gibberellin at the aforementioned concentrations led to a significant increase in the studied vegetative growth indicators, which was reflected positively on the productivity indicators. These treatments significantly exceeded the productivity index of green pods (317.51, 331.79, and 296.46 kg/1000m2, respectively) compared with the control treatment (212.79 kg/1000m2). The efficiency of the fertilizer was 32.98, 35.87, and 28.22%, respectively. Foliar spray treatments with wood vinegar, seaweed and gibberellin also contributed to a significant increase in the protein content of bean seeds (24.24, 24.37, and 23.89%, respectively), nitrogen (23.08, 23.61 and 22.63%, respectively), and phosphorus (1.54, 1.53 and 1.67%, respectively) compared to the control (22.38, 21.03 and 1.17, respectively). In conclusion, the positive effect of foliar spraying with both wood vinegar and seaweed as natural materials is clear in improving the growth and productivity of faba beans compared to the gibberellin, with the aim of preserving the environment and humans.

Keywords: wood vinegar, seaweed, beans, productivity, proteins.
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