The specialized book "Soya in Circulation" offers a comprehensive analysis of soybeans as one of the four main crops in global agriculture. It highlights the challenges associated with soybean cultivation, particularly regarding the consistent yields, which in Ukraine range between 1.00 and 1.40 t/ha. The book examines the effects of climatic conditions, fertilizers, soil cultivation, inoculants, and bioprotectors on yields and the quality of soybean production. It also analyzes various soybean varieties and their productivity depending on cultivation systems and weed control methods. The results are based on long-term data and are of interest to agricultural managers, students, educators, and researchers.