Agrobiological foundations for growing woody energy crops on drained organogenic soils

Abstract

The purpose of the work was to identify the most effective agrobiological measures of plantation cultivation of wood energy crops – various types of willow on drained organogenic soils of Forest-steppe and Polesie, to develop technologies for their cultivation and to carry out energy, economic and environmental assessments of their cultivation on land extracted from intensive cultivation. Research methods – field with a complex of biometric, agrochemical and laboratory studies, mathematical and statistical.The results of studies conducted on medium-deep drained old-time carbonate peatland are presented. Data on agroecological assessment of soil and climatic conditions of agricultural lands were obtained to create energy plantations in the area of excess moisture, agrochemical and water-physical properties and features of the water-air regime of organogenic soils were investigated. As a result of the analysis, the data found that they fully meet the requirements of growing high-performance energy crops.It has been established that the most effective way of basic soil processing is to plant willows in ploughed furrows with an area of food of 0,9 x0,7 m and harvest every two to three years. The most productive on average in five years was willow three-song – 27,1-28,0 t per hectare and willow rod – 23,2 and 31,7 t per hectare of dry mass in Forest Steppe and Polissya, 28,2 and 21,2 t per hectare, respectively. According to economic indicators, the highest conditional net profit (21,1 thousand UAH per hectare) and the level of profitability (305%) provided willow rod on the scheme of planting 0,9 x 0,7 m and cleaning in the form of chips every three years.