Increasing food productivity is one of the most important requirements to meet the growing demand for it. Therefore, this study aimed to study the improvement pf the productivity and quality of some varieties of faba bean grown in sandy soil by foliar spraying with algae and wood vinegar during the two winter seasons (2021–22 and 2022–23). The results showed that the Nubaria-2 variety was superior to the Giza-716 variety in all characters except harvest index in both seasons. The results showed that the foliar spraying with wood vinegar and algae had a substantial impact on yield, its components, and the quality indices of faba bean varieties. Also, the results showed that foliar spraying with high rates of wood vinegar enhanced the seed yield and quality of faba bean varieties. Foliar spraying at a rate of 4 ml/l wood vinegar was superior to all other rates in yield, yield components, P%, K %, protein and total carbohydrates in the two seasons. The results of the study had important effects on the cultivation of faba bean in modern sandy soil. Foliar spray treatments with wood vinegar and algae can be a successful technique for increasing crop productivity and nutritional content, contributing to food security. The results obtained revealed the superiority of the Nubaria-2 variety over the Giza-716 in terms of yield and its components, and foliar spraying at a rate 4 ml/l of wood vinegar gave better results than other rates.