Predicting Compost Stability

Hue, N. V.; Liu, J.

doi:10.1080/1065657x.1995.10701777

Cited by 201 publications

(83 citation statements)

References 7 publications

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“…In our case, the ratio WSC:TN decreased from 4.7 to 0.7, reflecting mainly the decrease of WSC (Figure 3). These results agree with those of Hue and Liu (1995), which suggest values of WSC:TN as I 0.7 for mature composts. On the other hand, WSC decreased sixfold and NH,+-N threefold from the beginning to the end of the composting process; similar results were calculated from Garcia ef aZ.…”

Section: Composting Of Fish Waste With Wood By-products and Testing Csupporting

confidence: 83%

“…Garcia et al (1991) reported WSC values c 2.2 g/L as indicative of compost stability, while Hue and Liu (1995) suggested that values should be 5 10 g/kg. In our case, the final WSC (1.8 g/L equivalent to 18 g/kg) could be in- (Garcia et al 1991) or 2) the ratio WSC:TN (Hue and Liu 1995). In our case, the ratio WSC:TN decreased from 4.7 to 0.7, reflecting mainly the decrease of WSC (Figure 3).…”

Section: Composting Of Fish Waste With Wood By-products and Testing Cmentioning

confidence: 99%

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Composting of Fish Waste with Wood By-Products and Testing Compost Quality as a Soil Amendment: Experiences in the Patagonia Region of Argentina

Laos

Mazzarino

Walter³

et al. 1998

Compost Science & Utilization

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Composting experiments of fish processing wastes and wood by-products were conducted in the Andean-Patagonian Region. Fish wastes were mixed with sawdust + wood shavings (3:l ratio by weight) with two replicates. Materials were mixed and placed in 220-liter PVC reactors. After 20 days, materials were remixed and reloaded in the reactors. Samples were taken at 20, 30, 40, 60, 80 and 100 day intervals and chemical analyses were made to assess predictors of compost stability. Thermophilic temperatures over 55°C were sustained long enough to satisfy the EPA requirements for pathogen reduction (72 hours). The decrease of NH4+-N, water soluble carbon and the ratio of water soluble carbon to total nitrogen appeared to be the best parameters for predicting compost stability. Mature compost (CMP) and an organic commercial product, Lombriquen (LQN) were incubated with an Andisol and a Xeric Mollisol at a rate of 10g/kg for 16 weeks (20 to 30 percent soil moisture, 25°C) in order to estimate nitrogen and phosphorus release. Soils amended with LQN retained more P than CMP-amended soils (80 percent vs 60 percent of added Olsen-P in the Andisol and 50 vs 35 percent in the Xeric Mollisol). While N mineralization rates of LQN were variable (three to 11 percent of added total N), CMP showed constant rates for both types of soils (12 percent) and released more available N than LQN.

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Section: Composting Of Fish Waste With Wood By-products and Testing Csupporting

confidence: 83%

Section: Composting Of Fish Waste With Wood By-products and Testing Cmentioning

confidence: 99%

Composting of Fish Waste with Wood By-Products and Testing Compost Quality as a Soil Amendment: Experiences in the Patagonia Region of Argentina

Laos

Mazzarino

Walter³

et al. 1998

Compost Science & Utilization

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“…Regarding the C w content, the AS and AH showed significant differences, that of AS being lower and closer to the limit set for composts derived from different organic wastes, C w < 1%, and that of AS being similar to pig slurries . Based on the IS concept (Abad et al, 1993;Escudero, 1993;Hue & Liu, 1995), the AS had more-adequate values of pH, OM, and C w than did the AH. Except for S, the levels of mineral elements were higher in the AH.…”

Section: Initial Properties Of the As And Ah Substratesmentioning

confidence: 99%

Use of almond shell and almond hull as substrates for sweet pepper cultivation. Effects on fruit yield and mineral content

Valverde¹,

Madrid²,

García³

et al. 2013

Span. j. agric. res.

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The use of almond by products as substrate in greenhouses for growing vegetables has a great economic interest. The objective of this work was to assess the use of two almond by-products (almond shell-AS and almond hull-AH), which had been previously conditioned without composting, as substrates for pepper (cv. Caprino F1) production and to study their effects on the yield, fruit size, and fruit mineral content. Physical, physico-chemical, and chemical characteristics of the almond by-products were determined both initially and during the pepper growing season. Initially, all values of the parameters studied -except sulfur and iron-differed significantly between the two substrates. During cultivation, the 18 substrate parameters and variables tested -except bulk density-exhibited significant variations with time for AS; the same occurred for AH, exceptions being pH, total nitrogen N t , N-NH 4 , bulk density, and manganese. The changes in both substrates for the K, N, and S concentrations were significant. The nutrient levels in AH were higher than for AS. The almond shell and almond hull substrates produced slight decreases in total fruit yield with respect to the control (0.79 and 3.22 for AS and AH, respectively), with a lesser decrease for AS, due to reductions in the number of fruits per plant rather than to reductions in individual fruit weight. The plants grown on the AS and AH substrates showed a decrease in total fruit yield, due to reductions in the number of fruits per plant rather than reductions in individual fruit weight.

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“…It should be also taken into account that a substantial amount of manure is composted before its application on soils. According to various authors (e.g., Hue and Liu, 1995;Bernal et al, 1998), this leads to a consistent decrease in WEOC. Hence, a lower WEOC value was used (i.e., 5 mg g À1 ) for all kind of composted manure (PL C , PM C , CM C ).…”

Section: Sampling Datementioning

confidence: 99%

Annual cycle of humic substances in a temperate estuarine system affected by agricultural practices

Waeles

Riso

Pernet-Coudrier

et al. 2013

Geochimica et Cosmochimica Acta

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, et al.. Annual cycle of humic substances in a temperate estuarine system affected by agricultural practices. Geochimica et Cosmochimica Acta, Elsevier, 2013Elsevier, , 106, pp.231-246. 10.1016Elsevier, /j.gca.2012 Annual cycle of humic substances in a temperate estuarine system affected by agricultural practices AbstractAlthough widely studied for their chemical structures and properties (e.g., metal complexation, growth stimulation of planktonic species), humic substances (HS) have been very poorly quantified in fluvial and estuarine waters. In this monthly basis study, we determined HS concentrations (by Adsorptive Square Wave Cathodic Stripping Voltammetry) along the entire river-seawater gradient of the Penzé estuary (NW France), with the aim to characterize the export of these compounds. In this watershed where agricultural activities are predominant, manuring activities were identified as being the main source of dissolved organic carbon (DOC) and HS. HS concentrations varied usually within a narrow range in fluvial waters, i.e., 1.8 ± 0.4 mgC L À1 (150 ± 40 lM), but increased significantly as the first flood of autumn occurred (>4 mgC L À1 in river and upper estuary). At this time, HS accounted for a very high proportion of DOC (>80%). As evidenced by the increasing contribution of HS to DOC, and by the increasing contribution of small colloidal HS species; this autumnal flood increase should be attributed to a greater retention and transformation of organic matter on soils over the hotter, drier, and lighter period preceding the first autumnal flood. In the mixing zone, HS displayed mostly conservative behaviour, although some removals were occasionally observed. Overall, our study suggests that preservation of HS could be relatively important during their transfer across macrotidal temperate estuaries, at least in systems affected by agricultural practices.

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Predicting Compost Stability

Cited by 201 publications

References 7 publications

Composting of Fish Waste with Wood By-Products and Testing Compost Quality as a Soil Amendment: Experiences in the Patagonia Region of Argentina

Composting of Fish Waste with Wood By-Products and Testing Compost Quality as a Soil Amendment: Experiences in the Patagonia Region of Argentina

Use of almond shell and almond hull as substrates for sweet pepper cultivation. Effects on fruit yield and mineral content

Annual cycle of humic substances in a temperate estuarine system affected by agricultural practices

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