Fate of nitrogen in pig slurry applied to a New Zealand pasture soil

...mately 30% of applied nitrogen was lost via denitrification (Carey et al. 1997)...
...Many experiments have measured NH3 emission after application of livestock slurry to unsaturated fields such as upland, grassland, and pasture soils (Carey et al. 1997; Sommer and Hutchings 2001; Yang et al. 2003; Whalen and DeBerardinis 2007)...
...It is widely reported that groundwater nitrate pollution results from the use of nitrogen as a fertilizer in unsaturated soil such as pasture soil, grassland, and maize land, especially that derived from manure or slurry when the nitrogen load exceeds crop uptake (Carey et al. 1997; Grignani and Zavattaro 2000 ;H arter et al.2002; Perez et al. 2003; Mantovi et al. 2006)...
...Unlike unsaturated soil where the rate of nitrogen loss via leaching was related to rainfall (Carey et al. 1997), nitrogen leaching in this study was mainly related to LCW application (Fig. 7). This is probably due to the hard subsoil layer, a feature of paddy fields that results in a relatively stable low leaching rate compared with upland field types such as grassland...
...found in leaching solution after liquid manure was applied to unsaturated soil (Carey et al. 1997; Mantovi et al. 2006)...
...Carey et al. (1997) also reported 11.7 g N m �2 loss from pasture soil where 400 kg N ha �1 was applied as pig slurry...
...The rate of nitrogen recovery by rice plants (32– 67%) in this study was similar to that reported for bermuda grass treated with swine effluent (40–75%; Adeli et al. 2003; Whalen and DeBerardinis 2007) but higher than the rate reported by Liu et al. (1997) (13–32%) and Carey et al. (1997) (20%)...
...nonexchangeable forms and similar proportions of nitrogen have been found to be immobilized onto soil (12% of applied pig slurry, Cameron et al. 1995 ;1 3% of applied animal urine, Whitehead and Bristow 1990; 20% of applied animal urine, Fraser et al. 1994 ;1 3– 15% of applied pig slurry, Carey et al. 1997 ;8 –14% of applied liquid swine waste, Whalen and DeBerardinis 2007)...
...Carey et al. (1997) reported that nitrogen loss via denitrification in pasture soil accounted for about 30% of applied nitrogen (200 or 400 kg N ha �1 applied in the...
...also differs. Although nitrogen lost by denitrification is similar to that reported in pasture soil (Carey et al. 1997), the percentages of NH3 volatilization (4.9–8.2% of applied LCW) in the paddy field applied with LCW were lower than the 15–25% reported after application of pig slurry...
...In addition, although the rates of loss via leaching were similar to those in unsaturated soil (Carey et al. 1997; Whalen and DeBerardinis 2007), most leaching loss occurred during the transplanting period due to the low nitrogen assimilation rate of rice plants at this stage, suggesting that the amount of basal fertilization should be reduced to prevent nitrogen infiltration...

Keywords (3)

Fate of nitrogen in pig slurry applied to a New Zealand pasture soil,10.1071/S96088,Australian Journal of Soil Research,P. L. Carey,A. W. Rate,K. C. C

Citation Context (3)

Nicolas Payet, et al. Evidence of soil pollution by nitrates derived from pig effluent using...

Sheng Zhou, et al. Nitrogen Budget and Ammonia Volatilization in Paddy Fields Fertilized ...

Peter Sørensen, et al. Remineralisation and residual effects of N after application of pig sl...

Citations (23)

Effect of infiltration rate on nitrogen dynamics in paddy soil after high-load nitrogen application containing 15N tracer

Evidence of soil pollution by nitrates derived from pig effluent using 18 O and 15 N isotope analyses

Evidence of soil pollution by nitrates derived from pig effluent using 18 O and 15 N isotope analyses

Modelling the fate of nitrogen following pig slurry application on a tropical cropped acid soil on the island of Réunion (France) (Citations: 5)

Nitrogen Budget and Ammonia Volatilization in Paddy Fields Fertilized With Liquid Cattle Waste (Citations: 1)


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