Economic and energy assessment of willow and poplar cultivation depending on the density of the plantation and the nutritional background

In Ukraine, during the last decade, much attention is being paid to improvement of biofuel and bioenergy usage efficiency,which allows to reduce dependence of the national economy on import of energy sources, bring down its energy capacity andensure economic development. The results of conducted research show that energy consumption for growing poplarbiomass is 9.1-10.0 times lower than amount of energy accumulated in it. The most intensive economic effect when growingenergy willow grew in the variants with planting density of 15 thousand pcs/ha and 12 thousand pcs/ha and application ofmineral fertilizers, where profit of 22.6 thousand UAH/ha-23.8 thousand UAH/ha was achieved. The most energy-efficientvariant among those used in the research was the one with planting density of 12 thousand pcs/ha and application of mineralfertilizers, at which energy efficiency coefficient reaches 7.9. The most intensive economic effect when growing energy poplargrew in the variants with planting density of 6.7 thousand pcs/ha and 5.6 thousand pcs/ha and application of mineralfertilizers, where profit of 33.9 thousand UAH/ha-30.9 thousand UAH/ha was achieved.