Reducing N losses (NH3, N2O, N2) and immobilization from slurry through optimized application techniques

Dosch, P.; Gutser, R.

doi:10.1007/978-94-009-1586-2_47

Cited by 24 publications

(26 citation statements)

References 10 publications

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“…For example, incorporation of liquid manure into the soil can give rise to higher N 2 O emissions than application on the soil surface (Dosch and Gutser, 1996;Weslien et al, 1998;Rodhe et al, 2006) and higher CH 4 emissions (Flessa and Beese, 2000). Method of incorporation may also be important, as Velthof et al (2003) found that placing pig slurry in bands at 5 cm depth gave significantly higher emissions than placing it evenly at the same depth or homogeneously mixing it through the upper soil level.…”

Section: Introductionmentioning

confidence: 95%

Greenhouse gas emissions from storage and field application of anaerobically digested and non-digested cattle slurry

Rodhe

Ascue

Willén

et al. 2015

Agriculture, Ecosystems & Environment

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Section: Introductionmentioning

confidence: 95%

Greenhouse gas emissions from storage and field application of anaerobically digested and non-digested cattle slurry

Rodhe

Ascue

Willén

et al. 2015

Agriculture, Ecosystems & Environment

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“…Among management practices dedicated to improve the efficiency of N fertilizer and manure in particular, application technique may be an important lever by reducing NH 3 emission following application to land (Huijsmans et al, 2004;Hansen et al, 2003;Rodhe and Etana, 2005;Sommer and Hutchings, 2001). However, the performance of application techniques strongly depends on environmental conditions, such as soil, climate or slurry composition (Sommer and Hutchings, 2001;Huijsmans et al, 2003;Dosch and Gutser, 1996;Smith et al, 2000). Furthermore, there is concern that NH 3 reduction may result in greater losses via other pathways, e.g.…”

Section: Introductionmentioning

confidence: 95%

Inclusion of the variability of diffuse pollutions in LCA for agriculture: the case of slurry application techniques

Langevin¹,

Basset-Mens

Lardon

2010

Journal of Cleaner Production

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“…Soil microbial activity leads to an N release that is not in synchronization with plant nutrient demand. Simultaneously, added readily degradable C compounds can lead to an immobilization of mineral N in soil (Dosch and Gutser 1996). Results of German agricultural statistics (Agrarpolitischer Bericht der Bundesregierung) indicated that no yield increase in organically grown winter wheat was achieved during the last 26 years.…”

Section: Introductionmentioning

confidence: 98%

Influence of different manuring systems with and without biogas digestion on soil organic matter and nitrogen inputs, flows and budgets in organic cropping systems

Möller

2009

Nutr Cycl Agroecosyst

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Nitrogen (N) and carbon (C) cycles are closely linked in organic farming systems. Use of residues for biogas digestion may reduce N-losses and lead to higher farmland productivity. However, digestion is connected to large losses of organic C. It is the purpose of this paper (1) to compare farming systems based on liquid slurry and solid farmyard manure regarding the N, C and organic dry matter (ODM) inputs and flows, (2) to analyse the effect of digestion on soil N, C and ODM inputs and flows within the cropping system, (3) to assess the effects of organic manure management on biological N 2 fixation (BNF), and (4) to assess the effect of biogas digestion on the sustainability of the cropping systems in terms of N and C budgets. The BNF by clover/grass-leys was the most important single N input, followed by the BNF supplied by legume cover cropping. Growth of crops in organic farming systems is very often N limited, and not limited by the soil C inputs. However, balances of N inputs showed that the implemented organic farming systems have the potential to supply high amounts of N to meet crop N demand. The level of plant available N to non-legume main crops was much lower, in comparison to the total N inputs. Reasons were the non-synchronized timing of N mineralization and crop N demand, the high unproductive gaseous N losses and an unfocussed allocation in space and time of the circulating N within the crop rotation (e.g. allocation of immobile manures to legumes or of mobile manures to cover crops). Simultaneously, organic cropping systems very often showed large C surpluses, which may be potentially increased the N shortage due to the immobilization of N. Soil organic matter supply and soil humus balance (a balance sheet calculated from factors describing the cultivation effects on humus increasing and humus depleting crops, and organic manure application) were higher in cropping systems based on liquid slurry than in those based on solid farmyard manure (?19%). Simultaneously, soil N surplus was higher due to lower gaseous N losses (?14%). Biogas digestion of slurry had only a very slight effect on both the soil N and the soil C budget. The effect on the N budget was also slight if the liquid slurry was stored in closed repositories. Digestion of residues like slurry, crop residues and cover crops reduced in a mixed farming system the soil C supply unilaterally (approximately -33%), and increased the amounts of readily available N (approximately ?70-75%). The long-term challenge for organic farming systems is to find instruments that reduce N losses to a minimum, to keep the most limiting fraction of N (ammonia-N) within the system, and to enhance the direct manuring effect of the available manures to non-legume main crops.

show abstract

Reducing N losses (NH3, N2O, N2) and immobilization from slurry through optimized application techniques

Cited by 24 publications

References 10 publications

Greenhouse gas emissions from storage and field application of anaerobically digested and non-digested cattle slurry

Greenhouse gas emissions from storage and field application of anaerobically digested and non-digested cattle slurry

Inclusion of the variability of diffuse pollutions in LCA for agriculture: the case of slurry application techniques

Influence of different manuring systems with and without biogas digestion on soil organic matter and nitrogen inputs, flows and budgets in organic cropping systems

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