Carbon, nitrogen and phosphorus mineralization potential of semiarid Sahelian soils amended with native shrub residues

Dossa, E. L.; Khouma, M.; Diédhiou, Ibrahima; Sène, M.; Kizito, Fred; Badiane, Alpha; Samba, San; Dick, Richard P.

doi:10.1016/j.geoderma.2008.10.009

Cited by 89 publications

(80 citation statements)

References 58 publications

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“…According to this, k values determined in Control treatment respond to its natural capacity of N release from its OM content, this way our results for Control treatment are higher than those reported by Dossa et al (2009) higher than those reported by Gil et al (2011) with k values of 0.002 and 0.009, when modelling N mineralization of bovine manure and sewage sludge compost in sandy clay loam soils. Finally, a 32 wk projection of potentially mineralizable N is presented using the N 0 and k values determined based on the results of the net mineralization test (Figure 3).…”

Section: Potentially Mineralizable Ncontrasting

confidence: 37%

Nitrogen mineralization in an Alfisol amended with thermoelectrical industry by-products

Fernández¹,

Stolpe²,

Celis³

et al. 2017

Chil. j. agric. res.

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In thermoelectric industry, synthetic gypsum and coal ash are generated as industrial by-products. The objective of this work was to evaluate the effect of different mixtures of synthetic gypsum and coal ash on N mineralization in an Alfisol. Nitrogen mineralization was evaluated by soil incubations under controlled conditions and potential mineralization using the nonlinear first order kinetics model Nm t = N 0 [1 -℮ (-kt) ], where Nm t is the mineral N accumulated at a specific time, N 0 is the potentially mineralizable N, k is the mineralization rate, and finally t is the incubation time. Treatments consisted of different mixtures of synthetic gypsum, coal ash and urea (M 1 : 50% synthetic gypsum, 50% coal ash, M 2 : 50% synthetic gypsum, 35% coal ash, 15% urea, M 3 : 45% synthetic gypsum; 40% coal ash, 15% urea, M 4 : 65% synthetic gypsum, 20% coal ash, 15% urea, M 5 : 55% synthetic gypsum, 30% coal ash, 15% urea). Each mixture was applied to the soil at 2 t ha ). Where the highest and lowest k were determined in M 5 (k = 0.44990) and M 3 (k = 0.04470), respectively. Mixtures of synthetic gypsum, coal ash and urea increased N mineralization over mixtures without urea. Respect N potential mineralization, in some cases N 0 and k values would respond more to the fit of the mathematical model employed than to the biological process.

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Section: Potentially Mineralizable Ncontrasting

confidence: 37%

Nitrogen mineralization in an Alfisol amended with thermoelectrical industry by-products

Fernández¹,

Stolpe²,

Celis³

et al. 2017

Chil. j. agric. res.

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“…Por essa razão, analisando-se os dados, recomenda-se que o monitoramento dos teores de CO fo em vez de NO ou N inorg continua sendo o que proporciona estimativas mais confiáveis de fração mineralizada dos resíduos. Além disso, sugere-se que sejam efetuadas análises mais frequentes no início do período de incubação dos resíduos no solo, tendo em vista que mais intensiva mineralização do material ocorre no primeiro mês, período em que estão disponíveis componentes de mais fácil degradação (Bayala et al, 2004;Khalil et al, 2005;Torres et al, 2005;Dossa et al, 2008;Barreto et al, 2010).…”

Section: Resultsunclassified

Mineralização do carbono e nitrogênio de resíduos aplicados ao solo em campo

Paula

Matos

et al. 2013

Rev. Bras. Ciênc. Solo

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RESUMOA definição das doses de aplicação de resíduos orgânicos de origens agrícola, urbana ou industrial, com vistas a seu aproveitamento agrícola, deve estar fundamentada na taxa de sua mineralização no solo. Neste trabalho, os objetivos foram utilizar e analisar diferentes métodos de estimativa das frações mineralizadas dos estercos de bovinos, suínos e galinhas, bem como do lodo de esgoto e do composto de lixo urbano, em campo, quando incorporados ou dispostos sobre um Latossolo Vermelho-Amarelo distrófico (LVAd). O experimento foi conduzido por um período de 360 dias, sendo feita coleta mensal de amostras do solo/resíduo, em que foram quantificadas as concentrações de carbono facilmente oxidável (CO fo ), o nitrogênio total, o amônio e o nitrato, possibilitando a estimativa do nitrogênio orgânico (NO). Verificou-se que estimativas das frações mineralizadas em resíduos dispostos superficialmente estão mais sujeitas a erros que as incorporadas, em razão das diferentes proporções resíduo/solo coletadas durante o período de monitoramento. Recomendou-se a obtenção das frações mineralizadas a partir de dados de concentração de CO fo no solo/resíduo, tendo em vista que as de N inorg e, consequentemente, de NO estão sujeitas à forte influência da ocorrência de chuvas, gerando valores pouco confiáveis. As frações mineralizadas de CO fo e NO estimadas, considerando-se as adições de material orgânico (CO fo(adic) ou NO (adic) ), foram, após 120 dias de incubação do resíduo, superiores a 89,3 %, sejam nos resíduos incorporados ou dispostos superficialmente.Termos para indexação: taxa de decomposição, matéria orgânica, degradação.

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“…The weighted mean value of TOC in the surface horizon of representative soils of the semi-arid region of Brazil is about 0.93% (Salcedo & Sampaio, 2008). The observed low values of TOC (< 0.60%) and TN (< 0.06%) are mainly controlled by the regional climate, apart from soil texture and fertility, which restricts production and incorporation of organic material into soils (Salcedo & Sampaio, 2008) as was observed in the African semi-arid soils (Lufafa et al, 2008;Dossa et al, 2009). Nevertheless, a slight higher content of the TOC is perceived in the clayey soils ( Figure 5G), probably as a result of the association of organic matter with the fine fraction (Hassink, 1997;Eberhardt et al, 2008;McClaran et al, 2008).…”

Section: (D) Cation Exchange Capacity (Cec) (E) Electrical Conductivmentioning

confidence: 96%

Soil attributes functionality and water eutrophication in the surrounding area of Itaparica Reservoir, Brazil

Filho

Gunkel

Sobral³

et al. 2013

Rev. bras. eng. agríc. ambient.

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In semi-arid areas of Brazil, climate and geological conditions are important factors that restrict the availability of soils and water for sustainable irrigated agriculture. The main objective of this study was to evaluate functionalities of physical and chemical attributes of soils and to provide information about irrigation water quality in the margins of the Itaparica Reservoir aiming the sustainable land use. Available data of 44 representative soil profiles comprising 21 profiles of Arenosols, six of Ferralsols, five of Luvisols, six of Planosols and six of Cambisols were used. Water samples along the margins of the reservoir were analysed to obtain information on water quality. The results indicated a narrow relationship between the functionalities of physical and chemical attributes and the parent material of the soils. The low nutrient availability and high water permeability are the typical characteristics of the soils developed on the sandy covers. On the other hand, higher nutrient availability and permeability restrictions are the most important features of the soils with larger influence of fine sediments. The results also suggested the process of water eutrophication in the Itaparica Reservoir.

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Carbon, nitrogen and phosphorus mineralization potential of semiarid Sahelian soils amended with native shrub residues

Cited by 89 publications

References 58 publications

Nitrogen mineralization in an Alfisol amended with thermoelectrical industry by-products

Nitrogen mineralization in an Alfisol amended with thermoelectrical industry by-products

Mineralização do carbono e nitrogênio de resíduos aplicados ao solo em campo

Soil attributes functionality and water eutrophication in the surrounding area of Itaparica Reservoir, Brazil

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