Abstract
It was found that sugar sorghum for growing in conditions of insufficient moisture on typical chernozem responds positively to the application of mineral fertilizers. The use of fertilizers increased the accumulation of sugars in plant stems in the phase of wax ripeness by 0.5−2.3%, biomass yield by 3.0−18.1 t/ha, bioethanol yield by 0.2−1.1 t/ha, solid fuel by 1.2−6.8 t/ha, total energy yield by 24−135 GJ/ha. The maximum bioenergy productivity of sugar sorghum was reached by growing hybrid ‘Nektarnyi’ and applying N120P120K120. The yield of bioethanol was 3.7 t/ha, solid fuel 22.2 t/ha, total energy yield 446 GJ/ha with excess of control without fertilizers by 1.1 t/ha, 6.8 t/ha and 135 GJ/ha, respectively.
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