Effects of green manure herbage management and its digestate from biogas production on barley yield, N recovery, soil structure and earthworm populations

Frøseth, Randi Berland; Bakken, Anne Kjersti; Bleken, Marina Azzaroli; Riley, Hugh; Pommeresche, Reidun; Thorup‐Kristensen, Kristian; Hansen, Sissel

doi:10.1016/j.eja.2013.10.006

Cited by 64 publications

(64 citation statements)

References 46 publications

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“…Our results are consistent with those reported by others for digestates (Terhoeven-Urselmans et al, 2009;Garfí et al, 2011;Barbosa et al, 2014;Bachmann et al, 2014;Frøseth et al, 2014) and for CM and SS (Chiyoka et al, 2014). In addition, the higher forage yields in response to ADM than CM and SS application reflected greater available N and P concentrations in ADM (Table 3), in agreement with results reported by others (Tambone et al, 2010).…”

Section: Barley Forage Responsesupporting

confidence: 83%

Agronomic Values of Anaerobically Digested Cattle Manure and the Separated Solids for Barley Forage Production

Hao

Thomas

Nelson

et al. 2016

Soil Science Soc of Amer J

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As biogas production expands, digestates from that industry are increasingly available as potential nutrient sources for crop production, but their agronomic value is poorly understood. Thus, a 5-yr field experiment was conducted to determine the agronomic values of anaerobically digested solid beef cattle feedlot manure (ADM) and the separated solids (SS) from ADM under a semiarid reduced-tillage dryland barley (Hordeum vulgare L.) forage cropping system. Three organic amendments, ADM, SS, and undigested solid beef cattle feedlot manure (CM), were applied annually at 200 or 400 kg total N ha −1 for 4 yr, while the residual effect was examined in the fifth year. The higher N and P availability in ADM translated into greater barley forage yields, total N uptake, amendment-derived N uptake, and apparent N recovery (ANR) from ADM-amended soil than SS-and CM-amended soils, while there were no significant differences between soils receiving SS or CM. The ANR was 22% for ADM but only 12% for CM and 9% for SS. In contrast, P uptake, the fraction of amendment-derived P uptake, and apparent P recovery were similar among all amendments. Similar yields, ANR, post-harvest soil NH 4 , NO 3 , and Olsen-P concentrations between SS-and CM-amended soils suggest that they have a comparable agronomic value. Less residual Olsen-P in soil receiving ADM than SS or CM suggests that ADM is a lower risk for P accumulation when applied at N-based rates. We recommend that current agronomic values for cattle feedlot manure could be applied to SS but not ADM.

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Section: Barley Forage Responsesupporting

confidence: 83%

Agronomic Values of Anaerobically Digested Cattle Manure and the Separated Solids for Barley Forage Production

Hao

Thomas

Nelson

et al. 2016

Soil Science Soc of Amer J

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“…For example, there are some indications in a number of trials that earthworm populations react differently to slurry or digestate applications, with Lumbricus terrestris preferring slurry and Eisenia fetida preferring digestate (Clements 2013). Another study indicates that digestates did not influence earthworm populations, whereas earthworms were positively influenced by the green manure crop otherwise used as feedstock for anaerobic digestion (Frøseth et al 2014). Alburquerque et al (2012b) found a significant increase in alkaline phosphatase activity (linked to the P cycle) in soils treated with digestates; however, no changes in β-glucosidase (linked to the carbon cycle), urease, and protease (both linked to the N cycle) activities were measured.…”

Section: Effects Of Anaerobic Digestion On Soil Properties and Soil Bmentioning

confidence: 99%

“…Application of digestates improved soil properties by reducing the bulk density, increasing saturated hydraulic conductivity, moisture retention capacity of soils (Garg et al 2005;Beni et al 2012), and aggregate stability (Beck and Brandhuber 2012;Beni et al 2012;Erhart et al 2014;Frøseth et al 2014), compared to an untreated control. However, an assessment on the long-term direct effects of digestate application on soil physical properties in comparison to the undigested feedstock is not available.…”

Section: Effects Of Anaerobic Digestion On Soil Properties and Soil Bmentioning

confidence: 99%

“…for energy purposes instead of direct incorporation into the soil. Harvest of green manure crops and crop residues in autumn for anaerobic digestion with subsequent reallocation of nutrients in winter and spring removes substantial amounts of N in late summer and autumn (Gunnarsson et al 2008(Gunnarsson et al , 2011Möller et al 2008;Brozyna et al 2013;Erhart et al 2014;Frøseth et al 2014) substantially affecting the soil mineral N content in autumn (e.g., Möller and Stinner 2009). (iii) Changes of the performed crop rotation and crop acreage (e.g., changes in cover cropping, implementation of energy crops like silage maize at the cost of cash crops, etc.)…”

Section: Effects Of Anaerobic Digestion On Digestate Organic Matter Cmentioning

confidence: 99%

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Effects of anaerobic digestion on soil carbon and nitrogen turnover, N emissions, and soil biological activity. A review

Möller¹

2015

Agron. Sustain. Dev.

231

139

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Sustainability in agriculture means the inclusion of several aspects, as sustainable agriculture systems must not compromise not only their ability to satisfy future needs by undermining soil fertility and the natural resource base but also sustainable agriculture has had to address a range of other issues including energy use, efficient use, and recycling of nutrients, the effects on adjacent ecosystems including the effects on water bodies and climate change. Organic manures are an important factor to keep the soil fertility level of soils. However, their management is often related to large emissions. In this context, anaerobic digestion is-similarly to composting-a treatment option for stabilization of biogenic wastes leading to a residual product called digestates, enabling the sanitation and the recycling and use as fertilizer. It is also a means to obtain energy from wastes as well as from dedicated energy crops. Therefore, anaerobic digestion potentially addresses several aspects of agricultural sustainability. This review discusses the current state of knowledge on the effects of anaerobic digestion on organic compounds in digestates and the most important processes influencing N emissions in the field, as well as the possible longterm effects on soil microbial biomass and soil fertility. The main findings are that (1) the direct effects of anaerobic digestion on long-term sustainability in terms of soil fertility and environmental impact at the field level are of minor relevance. (2) The most relevant effects of anaerobic digestion on soil fertility as well as on N emissions will be expected from indirect effects related to cropping system changes such as changes in crop rotation, crop acreage, cover cropping, and total amounts of organic manures including digestates. Furthermore, (3) the remaining organic fraction after anaerobic digestion is much more recalcitrant than the input feedstocks leading to a stabilization of the organic matter and a lower organic matter degradation rate after field application, enabling a similar reproduction of the soil organic matter as obtained by direct application of the feedstock or by composting of the feedstock. (4) Regarding emissions, the main direct effect of anaerobic digestion on a farm level is the influence on gaseous emissions during manure or digestate treatment and handling, whereas the direct effects of anaerobic digestion on a field level on emissions (NH 3 − and N 2 O − emissions, NO 3 -leaching) are negligible or at least ambiguous. (5) The main direct effects of anaerobic digestion on the field level are short-term effects on soil microbial activity and changes in the soil microbial community. Therefore, in terms of the effects on agricultural sustainability, potential cropping system-based changes induced by introduction of biogas plants are probably much more relevant for the overall performance and sustainability of the cropping system than the direct effects triggered by application of digestates in comparison to the undigested feedstock...

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“…In China, there will be a trend to integrate green manure in agricultural system as an alternative strategy for lowering chemical fertilizer usage and restoring a deteriorated field environment. Current research focuses on improving soil physical and biochemical properties [1][2][3][4][5][6][7][8][9][10][11][12][13][14], contaminated soil rehabilitation [15][16][17][18][19][20][21][22], improving crop yield [13,[23][24][25][26], development of sustainable agricultural system [27][28][29][30][31][32] at the micro scale. However, developing green manure at a regional scale is especially affected by both human interventions and the natural soil properties.…”

Section: Introductionmentioning

confidence: 99%

Modelling the Spatial Expansion of Green Manure Considering Land Productivity and Implementing Strategies

et al. 2018

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Abstract:In modern sustainable agriculture, green manuring is increasingly emphasized for a reasonable land use management. However, the expansion of green manure is affected by a range of factors, such as soil geophysical properties and human intervention. This paper proposes an approach of spatial modelling to understand the mechanisms that influence green manure expansion and map the future distribution of green manure intercropped in the orchards in the Pinggu District, Beijing, China. We firstly classified the orchards into five grades according to a land productivity evaluation, and then considered two strategies for implementing green manure. Two scenarios were designed to represent the strategies: prioritizing low-productivity orchards to promote green manure intercropping (scenario 1) and prioritizing high-productivity orchards to promote green manure intercropping (scenario 2). The spatial expansion of green manure for 2020 was simulated at a resolution of a 100 × 100 m grid in the CLUE-S (the Conversion of Land Use and its Effects at the Small Region Extent) model. The two strategies led to quite different spatial patterns of green manure, although they were applied to the same areas. As a result, the spatial pattern of green manuring of scenario 1 was more concentrated than that of scenario 2. To summarize, the modelled outcomes identified the driving factors that affect green manure expansion at a grid scale, whereas the implementing strategies directly determined the spatial arrangements of green manuring at a regional scale. Therefore, we argue that the assessment of the driving factors and the prediction of the future distribution of green manuring are crucial for informing an extensive use of green manure.

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Effects of green manure herbage management and its digestate from biogas production on barley yield, N recovery, soil structure and earthworm populations

Cited by 64 publications

References 46 publications

Agronomic Values of Anaerobically Digested Cattle Manure and the Separated Solids for Barley Forage Production

Agronomic Values of Anaerobically Digested Cattle Manure and the Separated Solids for Barley Forage Production

Effects of anaerobic digestion on soil carbon and nitrogen turnover, N emissions, and soil biological activity. A review

Modelling the Spatial Expansion of Green Manure Considering Land Productivity and Implementing Strategies

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