Chemical and microbial properties of various compost products

Tang, Jingchun; Inoue, Yasushi; Yasuta, Tsuyoshi; Yoshida, Shigekata; Katayama, Arata

doi:10.1080/00380768.2003.10410007

Cited by 39 publications

(34 citation statements)

References 19 publications

(18 reference statements)

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“…Initial N and C contents were 3.9% and 34.0%, respectively, which decreased during the composting process. Nitrogen content in the present compost was relatively high compared to other kinds of compost as the N content in most compost products falls to less than 4 (Tang et al, 2003). The initial C/N ratio, 8.8, increased to 10.1 after 72 h of incubation.…”

Section: Introductionmentioning

confidence: 77%

Degradation of the Seaweed Wakame (Undaria pinnatifida) by a Composting Process with the Inoculation of Bacillus sp. HR6

et al. 2007

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Section: Introductionmentioning

confidence: 77%

Degradation of the Seaweed Wakame (Undaria pinnatifida) by a Composting Process with the Inoculation of Bacillus sp. HR6

et al. 2007

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“…The reason for this effect is that more TEs are utilized to cope with macronutrient stimulated biomass production [86]. To avoid TE deficiency, organic farming or application of micronutrient fertilizers can be a practical solution [87,88]. However, the organic matter treatment must be monitored because of submergence mediated anoxia related changes in the paddy soil, which alter TE cycling.…”

Section: Fertilizationmentioning

confidence: 99%

Trace Element Management in Rice

Sebastian¹,

Prasad²

2015

Agronomy

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Trace elements (TEs) are vital for the operation of metabolic pathways that promote growth and structural integrity. Paddy soils are often prone to TE limitation due to intensive cultivation and irrigation practices. Apart from this, rice paddies are potentially contaminated with transition metals such as Cd, which are often referred to as toxic TEs. Deficiency of TEs in the soil not only delays plant growth but also causes exposure of plant roots to toxic TEs. Fine-tuning of nutrient cycling in the rice field is a practical solution to cope with TEs deficiency. Adjustment of soil physicochemical properties, biological process such as microbial activities, and fertilization helps to control TEs mobilization in soil. Modifications in root architecture, metal transporters activity, and physiological processes are also promising approaches to enhance TEs accumulation in grains. Through genetic manipulation, these modifications help to increase TE mining capacity of rice plants as well as transport and trafficking of TEs into the grains. The present review summarizes that regulation of TE mobilization in soil, and the genetic improvement of TE acquisition traits help to boost essential TE content in rice grain.

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“…Since the microbial community plays an important role in composting, the evaluation of compost maturity based on it has attracted increased focus [1,5]. One of the convenient methods for the assessment of microbial community is the quinone profile method due to its simplicity, quantitative and high repeatability [1,[6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Compost can improve the physical and chemical properties of the soil and the production of crops [1,2]. Nevertheless, in some cases, the utilization of immature compost may generate destructive effects, including delay in germination and inhibition of grain yield [3,4].…”

Section: Introductionmentioning

confidence: 99%

Supercritical Fluid Extraction of Quinones from Compost for Microbial Community Analysis

Juliasih

Yuan

Sago

et al. 2015

Journal of Chemistry

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Supercritical fluid extraction (SFE) was used to extract quinones from compost to monitor the microbial community dynamics during composting. The 0.3 g of dried compost was extracted using 3 mL min −1 of carbon dioxide (90%) and methanol (10%) at 45 ∘ C and 25 MPa for a 30 min extraction time. The extracted quinones were analysed using ultra performance liquid chromatography (UPLC) with 0.3 mL min −1 of methanol mobile phase for a 50 min chromatographic run time. A comparable detected amount of quinones was obtained using the developed method and an organic solvent extraction method, being 36.06 mol kg −1 and 34.54 mol kg −1 , respectively. Significantly low value of dissimilarity index ( ) between the two methods (0.05) indicated that the quinone profile obtained by both methods was considered identical. The developed method was then applied to determine the maturity of the compost by monitoring the change of quinone during composting. The UQ-9 and MK-7 were predominant quinones in the initial stage of composting. The diversity of quinone became more complex during the cooling and maturation stages. This study showed that SFE had successfully extracted quinones from a complex matrix with simplification and rapidity of the analysis that is beneficial for routine analysis.

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Chemical and microbial properties of various compost products

Cited by 39 publications

References 19 publications

Degradation of the Seaweed Wakame (Undaria pinnatifida) by a Composting Process with the Inoculation of Bacillus sp. HR6

Degradation of the Seaweed Wakame (Undaria pinnatifida) by a Composting Process with the Inoculation of Bacillus sp. HR6

Trace Element Management in Rice

Supercritical Fluid Extraction of Quinones from Compost for Microbial Community Analysis

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