Studies on the relationship between slurry pH, volatilization processes and the influence of acidifying additives

Vandré, Robert; Clemens, Joachim

doi:10.1007/bf01991547

Cited by 44 publications

(21 citation statements)

References 26 publications

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“…Physical properties of the surface on which slurry is applied have proven important for infiltration and NH 3 volatilization. Consistently with the supplementary measurement of Experiment 1, Hoff et al (1981) observed a several times higher emission from liquid swine manure applied on a plastic liner as compared with application on the soil surface, whereas Vandré and Clemens (1997) found only a small difference in a similar comparison where partial freezing of soil limited infiltration. Smith et al (2000) measured higher NH 3 volatilization from slurry applied on hard and dry grassland soil than from slurry applied on moist grassland or arable soil.…”

Section: Discussion Ammonia Volatilizationsupporting

confidence: 76%

Ammonia volatilization, nitrogen in soil, and growth of barley after application of peat manure and pig slurry

Mattila¹

2008

AFSci

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Peat is added to manure, because its low pH and capacity to adsorb ammonia (NH 3 ) give it potential to reduce nitrogen (N) loss. Peat manure was prepared by mixing pig slurry with moderately humified Sphagnum peat. Less than 1% of applied ammoniacal N was volatilized as NH 3 from peat manure and pig slurry within 8 h of surface application on clay loam soil according to JTI method. Incorporated manures showed even smaller N loss. The low volatilization was due to the adsorption of manure ammoniacal N by peat, and the infiltration of slurry into harrowed, moist clay soil. In another experiment, peat manure was applied on polypropylene fabric without soil contact. Within the first 3 days there was only 9% reduction in the ammoniacal N of peat manure, but the major part of it was lost during several weeks of dry and warm weather. Peat manure did not cause any major improvements on the growth and N uptake of spring barley in spring and early summer as compared with slurry. Moisture deficit limited the availability of ammoniacal N of manures. As compared with surface application, incorporation of manures increased nitrification of ammonium in the soil, and dry matter mass (19-73%) and N uptake of barley. Supplementing manures with inorganic NPK fertilizer increased both dry matter mass (40-98%) and N concentration of barley stand.

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Section: Discussion Ammonia Volatilizationsupporting

confidence: 76%

Ammonia volatilization, nitrogen in soil, and growth of barley after application of peat manure and pig slurry

Mattila¹

2008

AFSci

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“…As previously referred to, the efficiency of acidification with regard to reducing NH 3 emissions depends on parameters such as the additive, target pH, slurry type, and step in the slurry management chain (Ndegwa et al, 2008). Several studies have confirmed that NH 3 emissions are directly related to the final pH of the slurry, following the addition of the amendment (Stevens et al, 1989;Vandre and Clemens, 1997;Berg, 2003;Petersen et al, 2012;Dai and Blanes-Vidal, 2013). The efficiency of the additives used to decrease NH 3 emissions during storage varies significantly.…”

Section: Nitrogen Emissionsmentioning

confidence: 93%

Acidification of animal slurry– a review

Fangueiro¹,

Hjorth

Gioelli

2015

Journal of Environmental Management

236

153

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“…However, such high losses through NH 3 volatilisation in the current study are unlikely due to the low soil and slurry pH (Table 1). Acidifying slurry to a pH of 5.0 to 6.5 before field-application has been shown to reduce NH 3 volatilisation by 50 to 75% (Vandre and Clemens 1997;Rotz 2004). It is, therefore, more likely that substantial amounts of the NH 4 ' -N were fixed by the soil and also taken up by the grass, or that the NO 3 Á produced through nitrification was rapidly absorbed by the grass and or denitrified.…”

Section: Results and Discussion Soil Mineral N Statusmentioning

confidence: 99%

Nitrous oxide emissions and soil mineral nitrogen status following application of hog slurry and inorganic fertilisers to acidic soils under forage grass

Mkhabela¹,

Burton²,

Madani³

et al. 2008

Can. J. Soil. Sci.

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' -N contents for Slurry and Ammonium treatments were generally similar but higher than for the other treatments, particularly during the first and second sampling dates. Soil NO 3 Á -N contents, meanwhile, were higher with the Nitrate treatment compared with the other treatments, especially at the first sampling date. These results imply that N 2 O production in these acid soils was limited by NO 3 Á availability. Therefore, N 2 O emissions from these soils can be minimised by using ammonium-based fertilisers including hog slurry rather than nitrate-based fertilisers.

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Studies on the relationship between slurry pH, volatilization processes and the influence of acidifying additives

Cited by 44 publications

References 26 publications

Ammonia volatilization, nitrogen in soil, and growth of barley after application of peat manure and pig slurry

Ammonia volatilization, nitrogen in soil, and growth of barley after application of peat manure and pig slurry

Acidification of animal slurry– a review

Nitrous oxide emissions and soil mineral nitrogen status following application of hog slurry and inorganic fertilisers to acidic soils under forage grass

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