Effects of 5years of digestate application on biomass production and quality of cocksfoot (Dactylis glomerata L.)

被引:13
作者
Tilvikiene, V. [1 ]
Slepetiene, A. [1 ]
Kadziuliene, Z. [1 ]
机构
[1] Lithuanian Res Ctr Agr & Forestry, Akademija, Kedainiai Distr, Lithuania
关键词
biomass yield; chemical composition; cocksfoot; digestate; fertilization; ANAEROBIC CO-DIGESTION; REED CANARY GRASS; BIOGAS PRODUCTION; LIGNOCELLULOSIC BIOMASS; NITROGEN-FERTILIZATION; SIDA-HERMAPHRODITA; AGRICULTURAL USE; SULFUR-CONTENT; METHANE YIELD; ENERGY CROPS;
D O I
10.1111/gfs.12306
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Anaerobic digestion of biomass produces biogas for combustion and also provides a residual digestate. Although sometimes regarded as a waste product, the nutrient-rich chemical composition of digestate makes it a potential organic fertilizer for agriculture. The goal of this study was to evaluate the effectiveness of digestate as a fertilizer on the biomass yield and chemical composition of cocksfoot (Dactylis glomerata L.). In a 5-year small-plot field experiment digestate fertilization treatments supplying 90, 180, 270, 360 and 450kgNha(-1) were compared with untreated plots and plots fertilized with 180kgNha(-1) of mineral N fertilizer. Swards fertilized with digestate produced higher biomass yield compared with the control. The same rate of nitrogen fertilizer (180kgNha(-1)) supplied as digestate and from mineral fertilizers gave similar results on biomass yield. Herbage in swards fertilized with digestate contained less nitrogen, but the C:N ratio was much more suitable for biogas production. Digestate fertilization resulted in higher concentrations of cellulose and hemicellulose in biomass and lower contents of the inhibitors of anaerobic digestionsulphur, calcium, magnesium and phosphoruscompared with those of swards receiving mineral fertilizers.
引用
收藏
页码:206 / 217
页数:12
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