Nitrogen mineralization of sewage sludges in soil

Yoneyama, T.; Yoshida, Tomio

doi:10.1080/00380768.1978.10433088

Cited by 15 publications

(7 citation statements)

References 5 publications

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“…These results can be interpreted as follows: the increase in the sludge loading rate exerts an adverse effect on nitrification rather than on ammonification. Actually, the nitrification inhibition at high sludge loading rates had already been reported (7)(8)(9). High sludge loading results in the development of unsuitable conditions for nitrification such as the anaerobic conditions derived from the increase of the rate of CO 2 evolution from sludge-amended soils (10)(11)(12) and/or the high pH coupled with the presence of ammonium nitrogen (5).…”

Section: Effect Of Sludge Loading Rate On the Stabilization Periodmentioning

confidence: 99%

Factors Affecting the Stabilization Period of Sewage Sludge in Soil with Reference to the Gel Chromatographic Pattern

Katayama

Hirai

Shoda

et al. 1986

Soil Science and Plant Nutrition

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Section: Effect Of Sludge Loading Rate On the Stabilization Periodmentioning

confidence: 99%

Factors Affecting the Stabilization Period of Sewage Sludge in Soil with Reference to the Gel Chromatographic Pattern

Katayama

Hirai

Shoda

et al. 1986

Soil Science and Plant Nutrition

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“…For the purpose of facilitating the return of sewage sludge into crop fields, many studies have been carried out on the nitrogen mineralization of such organic matter in soil. The C/N ratio of sewage sludge is usually lower than 10 when sludge is added to soil, after which release of inorganic nitrogen is generally observed (1)(2)(3). As reported previously by the authors (4), the extent of inorganic nitrogen released varies among different sewage sludges and soils.…”

mentioning

confidence: 58%

Decomposition of sewage sludge in soil

Oba¹,

Nguyen²

1982

Soil Science and Plant Nutrition

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Activated sludge from a sewage disposal plant was labeled with 11 N in the laboratory. The labeled sludge (dewatered cake) was then incubated under aerobic conditions for 30 days with four kinds of cultivated soils: volcanic ash soil, red-yellow soil, paddy soil, and sandy dune soil. The nitrogen mineralization of the soil organic matter was remarkable only in the case of the paddy soil. In this soil, a priming effect caused by the addition of the sludge was observed. After 30 days of incubation, the UN organic fractions remaining in the red-yellow soil were determined. It was found that the amino acid and the unidentified fractions in the hydrolyzable nitrogen forms of the sludge contributed mainly to the amount of nitrogen mineralized. Finally, using sludges which originated from the same organic matter source, the lnftuence of a generally-used inorganic coagulator Oime and ferric chloride) of sludge on the nitrogen cycle was clarified. This coagulator caused a reduction in the amount of inorpnic nitrogen mineralized in the soil and also accelerated the nitrification process.

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“…Dento) were sterilized by 0.1 % usplun solution, and sown in pots, in which 400 g of air-dried Ibaraki soil (9) had been kept after sieving with a 2 mm sieve. Seeds of sunflower (Helianthus annuus L. cv.…”

Section: Methodsmentioning

confidence: 99%

Absorption of atmospheric NO₂by plants and soils

Yoneyama

Hashimoto

Totsuka

1980

Soil Science and Plant Nutrition

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Tracer experiments using uN-labeled N0 2 gas confirmed the operation of two routes in the absorption of NOs-nitrogen by plants. One was direct incorporation through leaves and maybe sterns. The other was the uptake by the roots after NO. was absorbed in the soils. The quantitative estimation of the contribution of the two routes in NOs-nitrogen absorption by sunflower, kidney bean and corn plants was carried out, and the results indicated that the proportion of the NOs-nitrogen absorbed by the latter route was smaller.

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Nitrogen mineralization of sewage sludges in soil

Cited by 15 publications

References 5 publications

Factors Affecting the Stabilization Period of Sewage Sludge in Soil with Reference to the Gel Chromatographic Pattern

Factors Affecting the Stabilization Period of Sewage Sludge in Soil with Reference to the Gel Chromatographic Pattern

Decomposition of sewage sludge in soil

Absorption of atmospheric NO₂by plants and soils

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Nitrogen mineralization of sewage sludges in soil

Cited by 15 publications

References 5 publications

Factors Affecting the Stabilization Period of Sewage Sludge in Soil with Reference to the Gel Chromatographic Pattern

Factors Affecting the Stabilization Period of Sewage Sludge in Soil with Reference to the Gel Chromatographic Pattern

Decomposition of sewage sludge in soil

Absorption of atmospheric NO2by plants and soils

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Absorption of atmospheric NO₂by plants and soils