Nitrogen availability after repeated additions of raw and anaerobically digested 15 N-labelled pig slurry

2018 ◽  
Vol 69 (6) ◽  
pp. 1044-1055 ◽  
Author(s):  
D. Cavalli ◽  
L. Bechini ◽  
A. Di Matteo ◽  
M. Corti ◽  
P. Ceccon ◽  
...  
Keyword(s):  
Nitrogen Availability ◽  
Pig Slurry

Soil Nitrogen Availability after Addition of Thermally Dried Pig Slurry

2011 ◽  
Vol 75 (3) ◽  
pp. 940-948 ◽  
Author(s):  
Marithza Ramírez ◽  
Montserrat Pujolà ◽  
Miguel Quemada ◽  
Eusebi Jarauta-Bragulat ◽  
August Bonmati ◽  
...  
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Availability ◽  
Pig Slurry ◽  
Soil Nitrogen Availability

Loss of nitrogen and carbon during storage of the fibrous fraction of separated pig slurry and influence on nitrogen availability

2008 ◽  
Vol 146 (4) ◽  
pp. 403-413 ◽  
Author(s):  
J. PETERSEN ◽  
P. SØRENSEN
Keyword(s):  
Nitrogen Availability ◽  
Application Rate ◽  
Organic N ◽  
Pig Slurry ◽  
Volatile Elements ◽  
Total N ◽  
Available N ◽  
Ammonium N ◽  
On Farm

SUMMARYManure production in the most livestock-intensive areas exceeds the crop demand for nutrients and legislative restrictions on application rate cause a shortage of land for manure application. Export of nutrients in the fibrous fraction of separated animal slurry has become an option for sustaining or increasing livestock production in livestock-intensive areas. The nitrogen (N) and carbon (C) losses during on-farm storage of the fibrous fraction, originating from separation of anaerobically digested pig slurry using the non-volatile elements phosphorus (P), copper (Cu) and zinc (Zn) as internal references, were calculated. In addition, the plant availability of N in fresh and stored fibrous fractions was evaluated in an incubation experiment. The losses of N and C were greater from the heap surface than from the centre, and turning the heap by reloading for transport increased the losses. The proportion of ammonium N, total N and C lost during storage of the fibrous fraction was 0·30–0·90, 0·10–0·55 and 0·35–0·70 of the initial amount, respectively. Storage reduced the plant-available N and the amount of residual organic N, thereby having long-term influence on soil fertility. The plant-available N in fresh fibrous fractions was 0·22–0·52 of total N, but decreased to 0·15–0·38 after storage due to a decrease of the Nammonium:Ntotal ratio during storage. The net mineralization of manure N was negatively related to the Ctotal:Norganic ratio. The fibrous fraction of separated pig slurry may be characterized as a manure with a high potential for loss and a variable value as fertilizer.

A field treatment plant for pig slurry

1996 ◽  
Vol 34 (11) ◽  
pp. 87-92
Author(s):  
José Martinez ◽  
Xiaodi Hao
Keyword(s):  
Carbon Source ◽  
Lolium Perenne ◽  
Treatment Effect ◽  
Efficient Solution ◽  
Treatment Plant ◽  
Drainage Water ◽  
Pig Slurry ◽  
Total Recovery ◽  
Animal Wastes ◽  
Leachate Water

The SOLEPUR process for the treatment of pig slurry, based on the treatment effect of the soil, was developed in France to explore the notion that a simple biobarrier approach may be a potential efficient solution to the large accumulation of liquid animal wastes residues. The unit consists of (i) a managed field (3280 m2) which allows the total recovery of all the leachate water which percolates through growing ryegrass (Lolium perenne), to which the pig slurry is applied, (ii) a system of storage-pump-reactor for denitrification and (iii) a non-managed field for completing treatment. The process involves three operations: (1) overdosing the managed field with surplus slurry (about 1000 m3 pig slurry/ha.year applied from 1991 to 1994), (2) collecting and treating the nitrate-rich leachate and (3) irrigating the final treated water over other fields. This process decreased COD of pig slurry by 99.9 % and removed 99.9 % of phosphorus and approximately 80 % of nitrogen. The remaining nitrogen was oxidized in the soil into nitrate and leached out in the drainage water. The process of denitrification was selected to remove nitrate from the leachate and raw pig slurry was used as an external carbon source.

LABILE NITROGEN AVAILABILITY IN SOIL INFLUENCES THE EXPRESSION OF WOOD PATTERN IN KARELIAN BIRCH

2019 ◽  
Vol 104 (10) ◽  
pp. 1598-1609
Author(s):  
N. A. Galibina ◽  
L. L. Novitskaya ◽  
K. M. Nikerova ◽  
E. V. Moshkina ◽  
Yu. L. Moshchenskaya ◽  
...  
Keyword(s):  
Nitrogen Availability ◽  
Karelian Birch

Soil moisture, temperature and nitrogen availability interactively regulate carbon exchange in a meadow steppe ecosystem

2021 ◽  
Vol 304-305 ◽  
pp. 108389
Author(s):  
Muqier Hasi ◽  
Xueyao Zhang ◽  
Guoxiang Niu ◽  
Yinliu Wang ◽  
Qianqian Geng ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Nitrogen Availability ◽  
Carbon Exchange ◽  
Meadow Steppe ◽  
Steppe Ecosystem

Light factors and nitrogen availability to enhance biomass and C-phycocyanin productivity of Thermosynechococcus sp. CL-1

2021 ◽  
Vol 167 ◽  
pp. 107899
Author(s):  
Soi Keong Hoi ◽  
Birgitta Narindri Rara Winayu ◽  
Hsin Ta Hsueh ◽  
Hsin Chu
Keyword(s):  
Nitrogen Availability

scholarly journals Nitrogen fertilizer value of animal slurries with different proportions of liquid and solid fractions: A 3-year study under field conditions

2021 ◽  
pp. 1-11
Author(s):  
Betina Nørgaard Pedersen ◽  
Bent T. Christensen ◽  
Luca Bechini ◽  
Daniele Cavalli ◽  
Jørgen Eriksen ◽  
...  
Keyword(s):  
Solid Fraction ◽  
Liquid Fraction ◽  
N Fertilizer ◽  
Organic N ◽  
First Year ◽  
Net N Mineralization ◽  
Pig Slurry ◽  
Total N ◽  
Plant Availability ◽  
Loamy Sand Soil

Abstract The plant availability of manure nitrogen (N) is influenced by manure composition in the year of application whereas some studies indicate that the legacy effect in following years is independent of the composition. The plant availability of N in pig and cattle slurries with variable contents of particulate matter was determined in a 3-year field study. We separated cattle and a pig slurry into liquid and solid fractions by centrifugation. Slurry mixtures with varying proportions of solid and liquid fraction were applied to a loamy sand soil at similar NH4+-N rates in the first year. Yields and N offtake of spring barley and undersown perennial ryegrass were compared to plots receiving mineral N fertilizer. The first year N fertilizer replacement value (NFRV) of total N in slurry mixtures decreased with increasing proportion of solid fraction. The second and third season NFRV averaged 6.5% and 3.8% of total N, respectively, for cattle slurries, and 18% and 7.5% for pig slurries and was not related to the proportion of solid fraction. The estimated net N mineralization of residual organic N increased nearly linearly with growing degree days (GDD) with a rate of 0.0058%/GDD for cattle and 0.0116%/GDD for pig slurries at 2000–5000 GDD after application. In conclusion NFRV of slurry decreased with increasing proportion of solid fraction in the first year. In the second year, NFRV of pig slurry N was significantly higher than that of cattle slurry N and unaffected by proportion between solid and liquid fraction.

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