Influence of nitrogen fertilizer on perennial grass dry matter yield and suitability for heat production
2015
Adamovics, A., Latvia Univ. of Agriculture, Jelgava (Latvia). Inst. of Agrobiotechnology | Platace, R., Latvia Univ. of Agriculture, Jelgava (Latvia). Inst. of Agrobiotechnology | Sivicka, I., Latvia Univ. of Agriculture, Jelgava (Latvia). Inst. of Agrobiotechnology
Nowadays agriculture requires high-quality perennials with specific chemical composition that allows using them in bioenergy production. Sufficient amount of nutrients ensures favourable conditions for long-term use of soil resources and for high crop yield. Fertilizers along with climatic and soil conditions are vital for crop productivity and for yield quality. Nitrogen is significant for plant life processes; it is one of the main nutrients for grasses, it is important for yield and yield quality. Production of heat requires growing of plants with high biomass, high combustion ability, high heat output and low ash content. The aim of the research was to study dry matter yield of RCG and tall fescue depending on N fertilizer doses applied and to analyse the suitability of RCG and tall fescue dry matter yield for biofuel (pellet) production. In 2011-2012, the field trial was conducted in the Research and Study Farm “Pēterlauki”. During the research, the influence of different doses of nitrogen fertilizer on the dry matter yield of reed canary and tall fescue had been analysed. It was found out that application of N more than 30 kg haE-1 allowed to increase the dry matter yield of reed canary grass by 1.08-3.93 t haE-1 or by 21.05-75.44%. For tall fescue, application of N more than 30 kg haE-1 allowed to increase the dry matter yield by 1.94-6.94 t haE-1 or by 21.64-119.1%.
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