Bioenergy productivity of sugar beet and the balance of nutrients in the soil under biological cultivation

Abstract

It has been established that sugar beet, when grown in conditions of unstable moisture on podzoliс chernozem, form a high energy productivity of biomass under the use of alternative organic-mineral fertilization systems and require the application of increased doses of nitrogen and potassium fertilizers to form their balanced balance in the soil. The maximum energy productivity of the ‘Bulava’ hybrid was achieved with the application of nitrogen fertilizers in the spring in the pre-sowing cultivation at a dose of 90 kg/ha on the background of 5 t/ha of straw + Filazonite, 10 l/ha + P90K90 under deep ploughing in autumn: bioethanol energy output — 118 GJ/ha, biogas — 54 GJ/ha, total energy output — 172 GJ/ha, exceeding control without fertilizers — by 37, 16 and 53 GJ/ha, respectively.