Biomass yield of perennial grasses and ash content using different fertilisers and harvesting regimes | Daudzgadīgo zālaugu biomasas raža un pelnu saturs, lietojot dažādu mēslojumu un pļaušanas režīmu
2015
Rancane, S., Latvia Univ. of Agriculture Agency, Skriveri, Skriveri Municipality (Latvia). Research Inst. of Agriculture | Karklins, A., Latvia Univ. of Agriculture, Jelgava (Latvia). Inst. of Soil and Plant Sciences | Lazdina, D., Latvian State Forest Research Inst. Silava, Salaspils (Latvia)
Perennial grasses as source of bioenergy production have several advantages. In order to provide the most efficient use of grassland biomass for supply of biogas and/or as combustion material it is important to investigate growing conditions of grasses for finding the most effective fertilisation and grassland management system. An experiment with reed canary grass (Phalaris arundinacea L.) (RCG) and festulolium (×Festulolium pabulare) fertilised using waste products of bioenergy – digestate and wood ash in two harvest regimes – one-cut and two-cut per season was conducted for evaluation of dry matter yield (DMY) and ash content in grass biomass. Two year results showed that all kinds of fertilisers provided a significant increase of DMY; however, better results for both species were ensured using mineral fertilisers and wood ash. Lower ash content (4.0–5.4%) and hence more appropriate raw material for combustion can be obtained by mowing RCG once per season.
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