Carbon and nitrogen mineralization from two soils of contrasting texture and microaggregate stability: Influence of sequential fumigation, drying and storage

Gestel, M Van; Ladd, J.N.; Amato, M.

doi:10.1016/0038-0717(91)90185-m

Cited by 185 publications

(87 citation statements)

References 37 publications

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“…Drying±rewetting treatments, either unique or repeated, also relatively increase C or N mineralization (Table 3). Relative increases were in the same range than when breaking macroaggregates and generally increased with the clay content of soil (Soulides and Allison, 1961;Sorensen, 1974;Sorensen, 1983;Van Gestel et al, 1991). According to Cabrera (1993), not only the rate of N mineralization were increased, but the sources of mineralized N were changed.…”

Section: Information Deduced From Destructive Treatmentsmentioning

confidence: 90%

“…A schematic representation of the common fate of soil organic matter and soil aggregates, as described by Golchin et al (1994) and Puget et al (1999). organisms. About 25±80% of the biomass was killed by ®ne grinding (Powlson, 1980;Sorensen, 1983) and 15±30% by drying±rewetting treatments (Sorensen, 1983;Bottner, 1985;Van Veen et al, 1985;Cortez, 1989;Van Gestel et al, 1991). However, the contribution of the dead biomass itself to the mineralization ush was found to be minor (Powlson, 1980;Van Gestel et al, 1991).…”

Section: Control Of Microbial Turnover By Predatorsmentioning

confidence: 99%

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Relationship of soil organic matter dynamics to physical protection and tillage

Balesdent

Chenu

Balabane

2000

Soil and Tillage Research

1,049

559

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Tillage has been reported to reduce organic matter concentrations and increase organic matter turnover rates to a variable extent. The change of soil climate and the incorporation of aboveground C inputs within the soil lead to no unique effect on biodegradation rates, because of their strong interaction with the regional climate and the soil physical properties. The periodical perturbation of soil structure by tools and the subsequent drying±rewetting cycles may be the major factor increasing organic matter decomposition rates by exposing the organic matter that is physically protected in microaggregates to biodegradation. This paper reviews the assessed effects of tillage on organic matter, the scale, extent and mechanisms of physical protection of organic matter in soils. #

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Section: Information Deduced From Destructive Treatmentsmentioning

confidence: 90%

Section: Control Of Microbial Turnover By Predatorsmentioning

confidence: 99%

Relationship of soil organic matter dynamics to physical protection and tillage

Balesdent

Chenu

Balabane

2000

Soil and Tillage Research

1,049

559

View full text Add to dashboard Cite

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“…Esta predominância de isolados de crescimento rápido contrasta com o conhecimento corrente de que os rizóbios que nodulam amendoim pertencem ao gênero Bradyrhizobium spp que por sua vez compreende, geralmente, estirpes de crescimento lento e são capazes de alcalinizar o meio de cultura (Thies et al, 1991) Sprent (1994), confirmando que os rizóbios de crescimento rápido são mais comuns em regiões áridas, constituindo esta característica uma estratégia de sobrevivência, já que são mais tolerantes à seca que os de crescimento lento e se multiplicam rápido, em curto espaço de tempo úmido (Van Gestel et al 1991), o que explicaria sua maior freqüência nos solos das regiões semiáridas (Martins 1997).…”

Section: Methodsunclassified

Diversidade de rizóbios capazes de nodular leguminosas tropicais

Santos

Stamford

Neves

et al. 2007

Agraria

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Diversidade de rizóbios capazes de nodular leguminosas tropicais 1 RESUMOEm geral, leguminosas tropicais são capazes de formar nódulos com uma ampla faixa de rizóbios, o que contribui significativamente para o aumento da atividade da fixação biológica de nitrogênio. Objetivou-se no presente trabalho, estudar a faixa hospedeira do grupo conhecido genericamente como Rhizobium, rizóbio tropical ou grupo miscelânea caupi, como estratégia para a obtenção de um inoculante eficiente para a cultura do amendoim. ABSTRACTTropical legume species are generally capable of forming nodules with a broad rhizobium range, which contributes significantly to biological nitrogen fixation activity. This work had the objective of studying the host range of Rhizobium group generally referred as tropical rhizobia or miscellanea cowpea group and design strategies for obtaining an efficient inoculant for peanut. Seven species within the Aeschynomeneae tribe were used as host plant for rhizobia present in soil samples from Pernambuco State located in the North-east region of Brazil. Rhizobia were isolated from nodules of Arachis hipoaea, A. villosulicarpa, Stylosanthes guyanensis, S. scabra, Aeschynomene americana, A. paniculata and A. histrix and characterized regarding growth ratio, pH change of culture medium and colony morphology parameters: size, appearance, color, elevation, transparency, form and mucous type and quantity. The fenotipical characterization resulted in the identification of 44 groups. These data were used for estimating diversity indices related to the Rhizobium population present in soil samples under different vegetation and/or management. Shanon and Weaver diversity index and Margalef index indicated that soil covered by native vegetation (caatinga) showed a more diverse rhizobia population than the soil under peanut cultivation.

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“…Chemical, physical, and biological alteration and breakdown caused mineralization of soil organic matter (SOC) and increased CO 2 emission (van Gestel et al 1991), which accounted for about 60% of total greenhouse impacts (Rastogi et al 2002). Although vegetation and soil act as sink and storage of air CO 2 (Franzluebbers and Doraiswamy 2007), its emission has increased greatly in the last few decades.…”

Section: Introductionmentioning

confidence: 99%

Carbon mineralization and carbon dioxide emission from organic matter added soil under different temperature regimes

Rahman

Biswas

et al. 2017

Int J Recycl Org Waste Agricult

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Purpose Information on carbon dioxide (CO 2 ) emission from different organic sources and their temperature sensitivity to decomposition is scarce in Bangladesh. Therefore, this study quantified the rates of CO 2 emission and carbon (C) degradation constants from different organic material mixed soils at variable temperatures in two laboratory experiments. Methods The first experiment was conducted at room temperature for 26 weeks to study CO 2 emission and C mineralization using vermicompost, chicken manure, cow dung, rice straw, and rice husk biochar. Weekly CO 2 emission was measured by alkali absorption followed by acid titration. The second experiment comprised two factors, viz. four organic materials (vermicompost, chicken manure, cow dung, and rice straw) and six temperature regimes (25, 30, 35, 40, 45, and 50°C). Organic materials at 2.5 g C kg -1 soil were mixed in both experiments. Results CO 2 emission reached the peak at 5th weeks of incubation and then decreased with irregular fashion until 21st week. The C emission loss followed in the order of chicken manure [ rice straw [ vermicompost [ cow dung [ rice husk biochar, and C degradation constants indicated the slower decomposition of rice husk biochar compared to cow dung, vermicompost, chicken manure, and rice straw. Temperature positively enhanced the mineralization of organic materials in the order of 50 [ 45 [ 40 [ 35 [ 30 [ 25°C, which contributed to higher availability of soil phosphorus. Conclusions High temperature increased mineralization of tested organic materials. Because of slower decomposition rice husk biochar, cow dung and vermicompost application can be considered as climate-smart soil management practices that might help in reducing CO 2 emission from soil.

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Carbon and nitrogen mineralization from two soils of contrasting texture and microaggregate stability: Influence of sequential fumigation, drying and storage

Cited by 185 publications

References 37 publications

Relationship of soil organic matter dynamics to physical protection and tillage

Relationship of soil organic matter dynamics to physical protection and tillage

Diversidade de rizóbios capazes de nodular leguminosas tropicais

Carbon mineralization and carbon dioxide emission from organic matter added soil under different temperature regimes

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