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Suppression of ammonia volatilization from a paddy soil fertilized with anaerobically digested cattle slurry by wood vinegar application and floodwater management

Win, K.T.(Tokyo Univ. of Agriculture and Technology, Koganei (Japan)) ; Toyota, K ; Motobayashi, T ; Hosomi, M

Soil science and plant nutrition (Tokyo), 2009-02, Vol.55 (1), p.190-202 [Periódico revisado por pares]

Melbourne, Australia: Taylor & Francis Group

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  • Título:
    Suppression of ammonia volatilization from a paddy soil fertilized with anaerobically digested cattle slurry by wood vinegar application and floodwater management
  • Autor: Win, K.T.(Tokyo Univ. of Agriculture and Technology, Koganei (Japan)) ; Toyota, K ; Motobayashi, T ; Hosomi, M
  • Assuntos: acidification ; AMMONIA ; ammonia volatilization ; AMMONIAC ; AMONIACO ; ANAEROBIC TREATMENT ; anaerobically digested slurry ; BOVIN ; CATTLE ; ESTIERCOL FLUIDO ; EXCREMENTS ; EXCRETA ; floodwater management ; GANADO BOVINO ; GESTION DES EAUX ; LISIER ; ORDENACION DE AGUAS ; PADDY SOIL ; SLURRY ; SOL DE RIZIERE ; SUELO DE ARROZALES ; TRAITEMENT ANAEROBIQUE ; TRATAMIENTO ANAEROBICO ; VOLATILISATION ; VOLATILIZACION ; VOLATILIZATION ; WATER MANAGEMENT ; wood vinegar residue
  • É parte de: Soil science and plant nutrition (Tokyo), 2009-02, Vol.55 (1), p.190-202
  • Notas: 2009004865
    F04
  • Descrição: Ammonia (NH 3 ) volatilization from animal manure application is detrimental to the environment, crop nutrition and human health and investigations into mitigation strategies are a great challenge among agro-environmental issues. The objective of the present study was to reduce NH 3 volatilization in a paddy soil fertilized with anaerobically digested cattle slurry (ADCS). In laboratory experiments, several mitigation methods for NH 3 volatilization were tested. Among these methods, acidification of ADCS with wood vinegar (WV) from pH 7.8 to pH 6.0 was the most effective in suppressing NH 3 volatilization. Increasing the depth of the floodwater threefold also reduced NH 3 volatilization by more than 80%. A lysimeter (1 m square with 0.5 m depth) experiment was conducted in triplicate with the following treatments: (1) chemical fertilizer ([CF] N:P:K = 14:14:14), (2) ADCS, (3) acidifying ADCS with WV to pH 6.0, (4) keeping a deeper floodwater level (DFW) at 10 cm at the ADCS applications (3-4 cm in the other treatments). A total fertilization of 30 g  NH + 4 -N m −2 (basal and three times as a top dressing) was done for all treatments either with CF or ADCS and other fertilizations were not conducted. The NH 3 volatilization was measured using the dynamic flow chamber method for 1 week after each fertilizer application. The results highlighted that the use of ADCS, instead of CF, enhanced NH 3 volatilization approximately eightfold, and the total amount of NH 3 volatilization corresponded to 13% of the applied NH + 4 -N in the ADCS treatment. This increased N loss was effectively (63-82%) reduced by adding WV and by keeping the floodwater level deeper. Biomass production was not significantly different between the CF (2880 ± 226 g [dry basis] m −2 ) treatment and the three ADCS treatments (3320 ± 249, 2720 ± 384 and 3330 ± 359 g [dry basis] m −2 in the ADCS, ADCS + WV and ADCS + DFW treatments, respectively). These results demonstrated that enhanced NH 3 volatilization in soil fertilized with ADCS was mitigated by the simultaneous application of an acid residue, such as WV, and by the management of the floodwater level.
  • Editor: Melbourne, Australia: Taylor & Francis Group
  • Idioma: Inglês
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