Transformations of nitrogen fertilizers in soil

Wickramasinghe, K.N.; Rodgers, G. A.; Jenkinson, D. S.

doi:10.1016/0038-0717(85)90038-0

Cited by 56 publications

(30 citation statements)

References 10 publications

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“…In contrast, when glucose was added, 16% of added NH Puri and Ashman (1999) found that NH 1 4 showed twice the immobilization rate of NO-3 on average in an acid woodland soil over 12 months under ®eld conditions. The preferential microbial uptake of NH 1 4 rather than NO 2 3 has also been demonstrated in several studies including Jackson et al (1989); Recous and Mary (1990); Recous et al (1992); Rice and Tiedje (1989); Wickramasinge et al (1985). Puri and Ashman (1999) found a relatively low ratio of NH 1 4 to NO 2 3 immobilization in their woodland soil and pointed out that this ratio is likely to vary among soil types.…”

Section: -N and Nomentioning

confidence: 98%

Short-term immobilization of ammonium and nitrate added to a grassland soil

Christie

Wasson

2001

Soil Biology and Biochemistry

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Section: -N and Nomentioning

confidence: 98%

Short-term immobilization of ammonium and nitrate added to a grassland soil

Christie

Wasson

2001

Soil Biology and Biochemistry

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“…Previous studies on the fate of synthetic fertilizers and other nitrogen amendments in agricultural soils have been carried out at various long-term agricultural research sites (18)(19)(20)(21)(22)(23)(24)(25)(26). In several cases, fertilizer compounds artificially enriched in 15 N have been used to successfully follow the uptake of fertilizer N by crops and retention of fertilizer N in soil organic matter.…”

mentioning

confidence: 99%

Long-term fate of nitrate fertilizer in agricultural soils

Sébilo

Mayer

Nicolardot

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

566

308

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Increasing diffuse nitrate loading of surface waters and groundwater has emerged as a major problem in many agricultural areas of the world, resulting in contamination of drinking water resources in aquifers as well as eutrophication of freshwaters and coastal marine ecosystems. Although empirical correlations between application rates of N fertilizers to agricultural soils and nitrate contamination of adjacent hydrological systems have been demonstrated, the transit times of fertilizer N in the pedosphere-hydrosphere system are poorly understood. We investigated the fate of isotopically labeled nitrogen fertilizers in a three-decade-long in situ tracer experiment that quantified not only fertilizer N uptake by plants and retention in soils, but also determined to which extent and over which time periods fertilizer N stored in soil organic matter is rereleased for either uptake in crops or export into the hydrosphere. We found that 61-65% of the applied fertilizers N were taken up by plants, whereas 12-15% of the labeled fertilizer N were still residing in the soil organic matter more than a quarter century after tracer application. Between 8-12% of the applied fertilizer had leaked toward the hydrosphere during the 30-y observation period. We predict that additional exports of 15 N-labeled nitrate from the tracer application in 1982 toward the hydrosphere will continue for at least another five decades. Therefore, attempts to reduce agricultural nitrate contamination of aquatic systems must consider the long-term legacy of past applications of synthetic fertilizers in agricultural systems and the nitrogen retention capacity of agricultural soils.nitrogen cycle | nitrate leaching | isotopic biogeochemistry

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“…Aumento da mineralização do N orgânico causado pela adição de substratos orgânicos e fertilizantes nitrogenados tem sido relatado por outros autores como sendo um fenomeno denominado efeito "priming" ou "Added Nitrogen Interation" (ANI) (Westerman & Tucker, 1974;Jansson & Person, 1982;Wickramasinghe et al, 1985;Hart et al, 1986;Azam et al, 1993). As explicações para esse fenômeno foram bem descritas por Jenkinson et al (1985).…”

Section: Resultsunclassified

Mineralização do nitrogênio incorporado como material vegetal em três solos da Amazônia Central

Alfaia

1997

Rev. Bras. Ciênc. Solo

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RESUMOA mineralização do N proveniente do resíduo de feijão-caupi marcado com 15 N foi estudada em condições de laboratório de setembro a dezembro de 1992. O material vegetal foi incorporado em amostras dos três principais solos da Amazônia Central: dois de terra firme, classificados como latossolo amarelo e podzólico vermelhoamarelo, e um de várzea, classificado como glei pouco húmico (GP). As variações nos teores e na forma de N mineral provenientes do resíduo de caupi foram relacionadas com as características químicas dos solos estudados. No latossolo e no podzólico, a incorporação do resíduo de caupi aumentou significativamente a mineralização do N, sendo a forma amoniacal predominante, enquanto, no GP, a forma nítrica preponderou. Nos solos de terra firme, a incorporação do resíduo de caupi aumentou a mineralização do N orgânico do solo, indicando a ocorrência do efeito "priming". Após 60 dias de incubação, cerca de 30 (podzólico) a 40% (latossolo) do N proveniente do caupi foi mineralizado nos solos de terra firme, enquanto no de várzea somente 18% foi mineralizado nesse período. Tais resultados mostram o potencial que essa leguminosa apresenta como fornecedora de N para as plantas nos solos de terra firme da Amazônia Central.Termos de indexação: 15 N, caupi, Vigna unguiculata L, mineralização, efeito "priming", latossolo, podzólico, glei pouco húmico, Amazônia Central.

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Transformations of nitrogen fertilizers in soil

Cited by 56 publications

References 10 publications

Short-term immobilization of ammonium and nitrate added to a grassland soil

Short-term immobilization of ammonium and nitrate added to a grassland soil

Long-term fate of nitrate fertilizer in agricultural soils

Mineralização do nitrogênio incorporado como material vegetal em três solos da Amazônia Central

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