Dissolved organic nitrogen dynamics in a Mediterranean vineyard soil

Christou, M.; Avramides, Elizabeth J.; Jones, Davey L.

doi:10.1016/j.soilbio.2006.01.025

Cited by 70 publications

(32 citation statements)

References 40 publications

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“…Free and combined amino compounds accounted for between 59 and 78% of DON in forest soils in northern California and such amino compounds can be an important N source for some plants (Yu et al 2002). Our results again are consistent with earlier research that WSON plays an important role in soil fertility (Huang and Schoenau 1998;Christou et al 2006). …”

Section: Seasonal Patterns Of Wsoc:soc Wson:tn and Wson:wsn Ratiossupporting

confidence: 93%

Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China

Wu¹,

Jiang²,

Chang³

et al. 2010

Can. J. Soil. Sci.

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. 2010. Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China. Can. J. Soil Sci. 90: 27Á36. To better understand the impact of converting native forests to intensively managed plantations on soil carbon (C) and nitrogen (N) dynamics in subtropical China, we examined the seasonal patterns of water-soluble organic C (WSOC) and N (WSON) concentrations in soils in Chinese chestnut (Castanea mollissima Blume) (CF) and bamboo (Phyllostachys praecox C.D. Chu & C.S. Chou) plantation forests (BF) and adjacent native evergreen broadleaf forests (NF) in Ling-long Mountain, Zhejiang Province, China. The plantations were disturbed through surface soil removal and were fertilized and/or mulched, from which economic products (such as nuts and bamboo shoots) were annually harvested. We found that WSOC and WSON had large seasonal variations and were lower in the warmer than in the colder season. Average WSOC concentrations followed the order of BF (58.6)!NF (35.1)!CF (18.1 mg C kg Á1 ), a pattern mainly caused by mulching in BF in winter and the removal of surface soil in CF. Soil total C and N followed the order of BF !NF !CF. The extensive inorganic and organic fertilizer application in BF caused WSON concentrations to be 21 and 14 times higher than those in NF and CF, respectively. Conversion of native forests to plantations lowered soil WSOC:WSON and soil C:N ratios. The seasonal dynamics of WSOC:SOC (soil organic C) and WSON/TN ratios followed the same patterns of WSOC and WSON, respectively. The impacts of forest types on WSOC/SOC ratio, which is a measure of the quality of organic matter, were dependent on seasonal changes of management practices and/or tree growth. Nevertheless mean annual WSON/TN ratios of BF and CF were 2 and 12 times that of NF, indicating that a greater proportion of the total soil N pool became solubilized in the intensively managed plantations. We conclude that land-use conversion and associated management practices had a profound impact on WSOC, WSON, and total C and N concentrations in the studied forest soils in subtropical China.Key words: Forest management, water-soluble organic C, water-soluble organic N, WSOC/WSON ratio Wu, J.-S., Jiang, P.-K., Chang, S. X., Xu, Q.-F. et Lin, Y. 2010. La transformation des foreˆts naturelles en plantations dans la Chine subtropicale affecte le carbone et l'azote dissous dans le sol. Can. J. Soil Sci. 90: 27Á36. Pour mieux comprendre les conse´quences de la conversion des foreˆts naturelles en plantations intensives sur la dynamique du carbone (C) et de l'azote (N) dans le sol de la Chine subtropicale, les auteurs ont e´tudie´la variation saisonnie`re de la concentration du C hydrosoluble dans le sol (CCHS) et du N hydrosoluble dans le sol (CNHS) dans les foreˆts cultive´es de chaˆtaignier de Chine (Castanea mollissima Blume) (FC) et de bambou (Phyllostachys praecox C.D. Chu & C.S. Chou) (FB) ainsi que dans les foreˆts naturelles (FN) de conife`res latifolie´s adjacentes du mont Ling-long,...

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Section: Seasonal Patterns Of Wsoc:soc Wson:tn and Wson:wsn Ratiossupporting

confidence: 93%

Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China

Wu¹,

Jiang²,

Chang³

et al. 2010

Can. J. Soil. Sci.

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“…The ratio of amino acid-C incorporated into the microbial biomass versus that partitioned into respiration was not, however, largely affected by simulated overwintering time (p > 0.05; data not presented). The soil climatic conditions used here reflect the mean monthly soil temperature from January to February recorded in the field (Christou et al, 2006). In this winter period, the direct inputs of organic C into the soil from plants can be expected to be extremely low.…”

Section: Resultsmentioning

confidence: 99%

“…Over the same period, we showed that soil microbial activity similarly declined and that amino acid half-life in soil increased. Based upon measurements of amino acid half-life in the field (4.8 ± 0.7 h at 5.5°C; Christou et al, 2006) and measured here (2.6 ± 0.1 h) we calcu- Values represent means ± SEM (n = 3). late that the amino acid pool has turned over approximately 300 times during the four-month storage period and that this is equivalent to 5.7% of the total basal soil respiration.…”

Section: Resultsmentioning

confidence: 99%

“…The soil at the site was classified as a sandy clay loam Inceptisol and had the following properties (mean ± SEM, n = 3): pH, 7.52 ± 0.01; Electrical conductivity, 276 ± 34 dS m ; Microbial biomass-C, 401 ± 53 mg kg -1 . Further details of the site and soil are provided in Christou et al (2006). The mean annual rainfall at the site was 371 mm and the mean annual soil temperature was 17.4°C (min -4°C, max 34°C).…”

Section: Methodsmentioning

confidence: 99%

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Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter

Avramides

Christou

Jones

2009

Sci. agric. (Piracicaba, Braz.)

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Many temperate agricultural soils have prolonged periods in the winter when plant carbon inputs to the soil are low. Soil maintained at low temperature in the absence of plants was used to simulate the conditions in a vineyard soil during winter. In a four month simulated overwintering period we showed that the concentration of dissolved organic carbon and nitrogen in soil solution slowly declined alongside heterotrophic soil respiration. Measurements of free amino acid concentrations and turnover indicated that the amino acid pool in soil was rapidly depleted but readily replenished throughout the four-month period. This indicates that the soil contained intrinsic reserves of labile C that was capable of supporting the soil microbial community in times of reduced plant C inputs. Key words: DOC, DON, microbial activity, mineralization, nitrate, storage RESILIÊNCIA DA ATIVIDADE MICROBIANA E DA DINÂMICA DE AMINO-ÁCIDOS NA REMOÇÃO DAS ADIÇÕES DE CARBONO DAS PLANTAS, DURANTE O INVERNORESUMO: Muitos solos agrícolas de regiões temperadas passam por períodos prolongados de inverno, nos quais a adição de carbono de plantas é muito reduzida. Foi utilizado um solo mantido à baixas temperaturas e na ausência de plantas para simular condições de uma cultura de uva durante o inverno. Em quatro meses de simulação mostrou-se que as concentrações de carbono orgânico e de nitrogênio dissolvidos na solução de solo declinaram lentamente em paralelo à respiração heterotrófica do solo. Medidas de concentração de renovação de amino ácidos livres indicaram que a reserva do solo em aminoácidos foi rapidamente esgotada, mas prontamente reabastecida durante o período de quatro meses. Isto indica que o solo possuía reservas intrínsecas de carbono lábil que foi capaz de sustentar a comunidade microbiana em tempos de adição reduzida de carbono de planta.

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“…Além disso, para a videira, o composto tem sido usado como fonte de nutrientes, entre eles, o nitrogênio (N), o fósforo (P) e o potássio (K) (KORBOULEWSKY et al, 2002;CHISTOU et al, 2006;RAMOS;MARTÍNEZ-CASASNOVAS, 2006;NEIDEL et al, 2007).…”

Section: Introductionunclassified

Resposta das videiras a diferentes modos de distribuição de composto orgânico no solo

Melo

Brunetto²,

Basso

et al. 2012

Rev. Bras. Frutic.

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RESUMO -O trabalho objetivou avaliar o estado nutricional, a produção e a composição do mosto de uvas em videiras submetidas a diferentes modos de distribuição de composto orgânico no solo. O experimento foi conduzido em um vinhedo da cv. Cabernet Sauvignon, com plantas enxertadas sobre o porta-enxerto 'Paulsen 1103' em um solo Neossolo Litólico, em Bento Gonçalves (RS). Em agosto de 2006, foram implantados os tratamentos (T1) testemunha; (T2) aplicação de composto orgânico na superfície do solo sempre no mesmo lado da linha de plantio; (T3) aplicação de composto em lados alternados da linha de plantio ao longo dos anos; (T4) aplicação de composto em covas sempre do mesmo lado da linha de plantio, e (T5) aplicação de composto em covas em lados alternados na linha de plantio ao longo dos anos. Nas safras de 2006/2007, 2007/2008 e 2008/2009, os ramos da poda de inverno e o tecido da poda de verão foram secos e determinada a produção de matéria seca. Folhas completas foram coletadas, secas, moídas e submetidas à análise do teor total de N, P, K, Ca e Mg. Na maturação, foi contado o número de cachos e pesados, e, em seguida, bagas foram coletadas e determinados os valores de sólidos solúveis, pH, acidez titulável, ácido tartárico e málico. A distribuição de composto em covas sempre do mesmo lado da linha de plantio ou em lados alternados ao longo dos anos aumentou a quantidade de matéria seca dos ramos podados no inverno, especialmente, nas primeiras safras depois de sua aplicação. A aplicação e o modo de distribuição do composto na superfície do solo ou incorporado, anualmente no mesmo lado da linha de plantio ou alternado entre os lados ao longo dos anos, não afetaram a produção de uva, o estado nutricional e a composição do mosto, e, quando necessário, o composto orgânico deve ser aplicado na superfície do solo sem incorporação, em um mesmo lado da linha de plantio ou alternado entre os lados ao longo dos anos. Termos para indexação: Adubação orgânica, nutrição mineral, qualidade da uva, Vitis vinifera.

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Dissolved organic nitrogen dynamics in a Mediterranean vineyard soil

Cited by 70 publications

References 40 publications

Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China

Dissolved soil organic carbon and nitrogen were affected by conversion of native forests to plantations in subtropical China

Resilience of soil microbial activity and of amino acid dynamics to the removal of plant carbon inputs during winter

Resposta das videiras a diferentes modos de distribuição de composto orgânico no solo

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