Immobilization and remineralization of N following addition of wheat straw into soil: determination of gross N transformation rates by 15N-ammonium isotope dilution technique

Shindo, Haruo; Nishio, T.

doi:10.1016/j.soilbio.2004.07.027

Cited by 114 publications

(42 citation statements)

References 17 publications

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“…Comparing the individual sources, rice straw produced negative agronomic efficiency over control treatment. Incorporation of rice straw into soil can be enhanced through microbial N immobilization due to its high C:N ratio (Shindo and Nishio 2005). Nitrogen use efficiency (NUE) as affected by various organic and amendment and their combination are presented in differences were observed in N-use efficiency, and maximum NUE was observed in the treatment where 50% RS + G was applied followed by the treatment where 50% CD + G was used.…”

Section: Resultsmentioning

confidence: 99%

Organic and Inorganic Amendments on Rice (Oryza sativa L.) and Soil in Salt Affected Areas of Bangladesh

Hossain

Sarker

2016

J. Environ. Sci. & Natural Resources

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Salinity is a limiting factor for growth and development, since it affects several physiological processes in plants. An experiment was conducted to evaluate rice yield and quality of soil using different organic and inorganic amendments. Field experiment was laid out in a randomized block design with three replications and six treatments. Each treatment was received recommended doses of chemical fertilizers also. Based on these results, 50% of rice straw and gypsum amendments could be recommended to mitigate soil salinity thereby, improving the crop productivity of the salt affected lands. Maximum plant height, panicle length, total and effective tillers per hill and filled grains per panicle were observed in 50% (rice straw + gypsum) treated plots. Nutrients uptake were increased in grain and straw using different treatments compared to control and rice straw alone treated plots. In post harvest soil, there was a slight change of salinity and pH as affected by different treatments. Addition of rice straw and gypsum showed positive impact on organic carbon in soil.

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Section: Resultsmentioning

confidence: 99%

Organic and Inorganic Amendments on Rice (Oryza sativa L.) and Soil in Salt Affected Areas of Bangladesh

Hossain

Sarker

2016

J. Environ. Sci. & Natural Resources

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“…That was because more condensed or substituted aromatic rings and N-containing materials emerged in the microbial residue, however a low proportion of O-alkyl and carboxylic acid functional groups was reserved. The gradual decrease of C/N ratio and slight increase of H/C and O/C ratios of the residue treated by P were explained that the amounts of N-containing (Large amounts of inorganic N were transferred into organic N components (Shindo and Nishio, 2005)) and aliphatic compounds, O-containing groups were enhanced gradually cellulose. Furthermore, comparing with the referenced humic fractions (SRHA and SRFA standards), all the microbial residues originating from cellulose had more amounts of O-containing groups and N-containing compounds, whereas their molecules were not polymerized the degree of real HS.…”

Section: Compositions Of Microbial Residuesmentioning

confidence: 99%

“…It was so easy to understand that a part of inorganic N in the culture fluid could be assimilated into the microbial biomass, indirectly enhancing the amount of N-containing materials in its residue (Shindo and Nishio, 2005). The ability of utilizing inorganic N and synthesizing its own components of An in the fluid, by contrast, was the least.…”

Section: Compositions Of Microbial Residuesmentioning

confidence: 99%

Compositions and properties of microbial residues formed by three single species fungi and mixed strains in cellulose-containing liquid media

Wang

Dou

Yu³

et al. 2014

J. Soil Sci. Plant Nutr.

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The microbial residues, due to their closely connection with humic substances (HS), aroused our considerable interest. The method of shake-flask in liquid culture was adopt to accumulate them, in which the cellulose served as the sole C source. The microbial suspensions including Trichoderma viride (Tv), Aspergillus niger (An), Penicillium (P) and mixed strains (Ms) were inoculated into the cellulose culture fluid respectively. The incubation was performed for 70 days at a constant temperature of 28 ºC. The results showed that different microbial treatments had different effects on the C turnover in the cellulose fluid, among which Ms performed the most effective role in accumulating microbial residue and consuming organic C of cell metabolic product, Tv followed. As compared to cellulose, large amounts of inorganic N in the fluid could be transferred into the organic N components of residue. In the mean time, the proportion of aromatic rings could be increased at the cost of losing O-containing groups. Specifically, the degrees of condensation were enhanced by Tv and An, however their degrees of oxidation were inhibited. On the contrary, the P and Ms treatments had a significant advantage in the oxydative degradation of cellulose. Although some intermediate products (polysaccharides, phenolic compounds, carboxylic groups and syringyl units etc.) of HS could be detected in the microbial residues treated by Tv and An, their organic molecules did not still achieve the polymerization degree of real HS.

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“…2). Other studies have also shown that the increases in the biomass N were considerably lower than the N immobilized after the addition of glucose (e.g., Bremer and van Kessel 1990) and other organic materials (e.g., Shindo and Nishio 2005). Our study showed that the recoveries of the immobilized N in the biomass N during 7-day incubation (i.e., the ratio of ΔBio-N to ΔExt-N) differed widely (16-90%), although other studies have shown that the increased biomass N accounted for relatively narrow ranges, such as 31-53% in Chinese arable soils (Liang et al 2012) and 50-66% in Pakistan arable soil (Rasul et al 2009) of the immobilized N. This would be because a wide range of soils with quite different properties, including upland, paddy and forest soils, were used in this study (Table 1).…”

Section: Net Increases In Microbial Biomass N and Microbial N Immobilmentioning

confidence: 96%

“…It has often been observed that the increase in biomass N measured by the FE method can explain only the small fraction of microbial immobilized N after the addition of glucose (Azam et al 1989;Bremer and van Kessel 1990;Blagodatsky and Yevdokimov 1998;Vinten et al 2002;Qiu et al 2007;Rasul et al 2009;Liang et al 2012) and other organic materials (Vinten et al 2002;Shindo and Nishio 2005;Tilston et al 2009). In addition, the soils used in the previous studies evaluating both microbial N immobilization and the increases in biomass N due to glucose addition were mostly collected from arable sites.…”

Section: Introductionmentioning

confidence: 99%

Potential nitrogen immobilization as influenced by available carbon in Japanese arable and forest soils

Sawada

Funakawa

Toyota

et al. 2015

Soil Science and Plant Nutrition

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Microbial nitrogen (N) immobilization following the addition of organic materials to soils regulates soil N availability, which affects plant growth and N leaching from soils. In this study, the potential for microbial N immobilization was evaluated by short-term incubation experiments following the addition of available carbon (C) under non-limiting conditions of N and phosphorus (P) to seven Japanese arable and forest soils. Glucose was added as a model substrate at concentrations close to microbial biomass C. The forest soils had lower pH and smaller increases in respiration rates after the glucose addition, and higher organic and biomass C compared to the arable soils. Microbial N immobilization, estimated by net decreases in extractable N, was significantly correlated with the concentrations of added glucose and was on average 43 mg N g −1 glucose C during 3-and 7-day incubation for all soils. Net increases in biomass N measured by the chloroform fumigation-extraction method using the common conversion factor of 0.54 at 3 and 7 days after the glucose addition were lower than the microbial N immobilization for all soils, and the biomass N accounted for a smaller portion of immobilized N in the arable soils than in the forest soils. Therefore, the present study suggests that microbial N immobilization would be dependent on the concentrations of available C in organic materials and higher than the increases in biomass N, especially for arable soils when organic materials are added to soils under non-limiting conditions of N and P.

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Immobilization and remineralization of N following addition of wheat straw into soil: determination of gross N transformation rates by 15N-ammonium isotope dilution technique

Cited by 114 publications

References 17 publications

Organic and Inorganic Amendments on Rice (Oryza sativa L.) and Soil in Salt Affected Areas of Bangladesh

Organic and Inorganic Amendments on Rice (Oryza sativa L.) and Soil in Salt Affected Areas of Bangladesh

Compositions and properties of microbial residues formed by three single species fungi and mixed strains in cellulose-containing liquid media

Potential nitrogen immobilization as influenced by available carbon in Japanese arable and forest soils

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