Morpho-physiological characteristics of Miscanthus x giganteus in the first year of development
2012
Mitić, Nenad (University Singidunum, Belgrade (Serbia). Faculty of Applied Ecology Futura) | Đorđević, Ana (University Singidunum, Belgrade (Serbia). Faculty of Applied Ecology Futura) | Dražić, Gordana (University Singidunum, Belgrade (Serbia). Faculty of Applied Ecology Futura) | Milovanović, Jelena (University Singidunum, Belgrade (Serbia). Faculty of Applied Ecology Futura)
Miscanthus giganteus (elephant grass, Chinese grass) is a rapidly growing hybrid crop that produces a high annual yield of biomass and achieves a high energy value during incineration. It is grown as an energy source for combustion in thermal power systems, 1 ha of planted miscanthus replaces 6t of coal or 75 000 kWh of electricity. Miscanthus growing season starts in the first half of April, while the maximum biological yield is established at the beginning of October. Because of the high moisture content and lower biomass quality at the time of maximum biological yield, harvest is done in February, when the moisture content decreases to 20%. Field trials with treatments that include planting density (1, 2 and 3 plants/m2 ), increasing doses of mineral fertilizers (0, 50 and 100 kg/ha NPK) and irrigation (with and without irrigation), were used for the study of morpho-physiological features and determination of optimal agroecological conditions, necessary to achieve the maximum yield of biomass. In the first year of development and with the treatment of 100 kg N/ha and the density of three planted rhizomes / m ², the highest yield of 0.58 t / ha dry matter, was achieved. It has a wide ecological valence, the possibility of growing on poor quality soils with unfavorable conditions for the cultivation of annual crops and food production.
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