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Abstract
The case study to determine the peculiarities of Miscanthus giganteus aboveground biomass formation depending on sewage sludge and composts rate carried out in the Precarpathian region of Ivano- Frankivsk province on sod-podzolic soils. The largest area of the leaf surface of miscanthus is formed in the trials where fresh sewage sludge was applied in the rate of 20 - 40 t/ha. The leaf surface area increases from 19 up to 24.0 cm2/plant, and the yield of raw mass of plants at the level of 23.5 - 25.1 t/ha due to increasing rates of sewage sludge application. The highest indicators of net photosynthesis productivity were found in the period of intensive growth, which amounted to 7.78 g/m²/day and in the maturation period of 7.56 g/m²/day in the trial SS - 40 t/ha + N10P14K58. The amount of dry mass of miscanthus plants significantly depends on the height of the shoot and the leaf surface area of the plants. The use of compost based on sewage sludge and straw in a ratio of 3: 1 at a rate of 30 t/ha contributes to the dry weight of miscanthus plants at the level of 15 t/ha.
Highlights
The three main land-use groups in EU are: built-up areas, forest and agricultural land including mixed croplivestock, pasture/livestock grazing, permanent crop production systems and bioenergy crops [1]
During the application of compost based on sewage sludge and straw best result on height, number of plant stems and output of dry biomass was obtained in trial 8 (30 t / ha + N30K55 )
The number of plant stems increased with the amount of applied fertilizers based on sewage sludge at the rate of 20 - 40 t/ha from 6 to 13 pieces/m2 compared to the control
Summary
The three main land-use groups in EU are: built-up areas, forest and agricultural land including mixed croplivestock, pasture/livestock grazing, permanent crop production systems and bioenergy crops [1]. The biomass of energy crops occupies an important place in solving the problem of replacing traditional energy sources with alternative ones. Oil crops (82% of the land used for biodiesel fuel production) took first place in EU countries in 2015 [2]. The rest area for the production of ethanol crops (11%), biogas (7%), and heat generation (1%) used. Dedicated energy crops are mainly perennial grasses (miscanthus or switchgrass) and short rotation coppice such as willow or poplar. France, Germany, Spain, Romania, Sweden and the United Kingdom are the largest energy crops producer countries of the total European acreage [3,4,5]. Withdrawn in 2009 short rotation plantations scheme was granted in Poland at national level for such energy crops as willow, poplar, Miscanthus and Sida hermaphrodita [6]
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