Journal
AGRICULTURE-BASEL
Volume 11, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/agriculture11080695
Keywords
biomass; energy inputs; energy output; energy efficiency ratio; sorghum; yield
Categories
Funding
- Guangdong University of Petrochemical Technology
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The search for environmentally friendly renewable energy sources is driven by global climate changes and fossil fuel reserve depletion. Biomass, including sorghum, is a promising alternative to fossil fuels in Europe. Field experiments in Southern Ukraine showed that sweet sorghum can achieve a yield of 40.6 t/ha with an energy efficiency ratio of 11.18 under certain precipitation conditions, while grain sorghum's yield and energy efficiency ratio varied.
Global climate changes and fossil fuel reserve depletion are drivers for the search for environmentally friendly renewable energy sources. In Europe, biomass represents the main alternative to fossil fuels. Among energy crops, sorghum is a promising crop for arid regions. The biomass yield and energy efficiency of sorghum (both silage and grain) were studied based on field experiments conducted in Southern Ukraine. The following climate changes were identified: an increase in temperature and a decrease in precipitation. The total energy inputs for sweet sorghum were estimated at 11.256 GJ/ha. The main contributors to the energy inputs are mineral fertilizers (56.99%). The experiment showed that a yield of 40.6 t/ha could be achieved with annual precipitation of 350 mm. The energy efficiency ratio was determined to be 11.18. The total energy inputs for grain sorghum was 16.081 GJ/ha. Its yield (grain) varied from 1.92 to 7.05 t/ha. The energy efficiency ratio of grain sorghum ranged from 2.8 to 16.7.
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