The Art in the Science of Compost Maturity

Rynk, Robert

doi:10.1080/1065657x.2003.10702116

Cited by 26 publications

(17 citation statements)

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“…Compost maturity is an important factor affecting the successful application of composts for agricultural purposes (14,15) and their general marketability (16). In addition, maturity is a term used to indicate the level of phytotoxic substances in composts and compost suitability for plant growth (17)(18)(19). In fact, stability is a word associated with the resistance of various organic matters of a product against extensive degradation or toward major microbiological activity and maturity describes the ability of a product to be used efficiently in agriculture and is related to the growth of plants and to phytotoxicity aspects.…”

Section: Introductionmentioning

confidence: 99%

Maturity and Stability Evaluation of Composted Municipal Solid Wastes

et al. 2016

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Background: Composting process is a feasible biological treatment for the recycling of municipal solid wastes as a soil amendment. The principal requirement of compost for it to be safely used in soil is a high degree of stability or maturity, which implies stable organic matter content as well as the absence of phytotoxic compounds and plant or animal pathogens. Objectives: At the present study, the maturity and stability of composted municipal solid wastes at a biocompost plant was evaluated. Materials and Methods: For the assessment of compost maturity, important parameters including temperature, moisture content, pH, electrical conductivity, carbon-to-nitrogen (C/N) ratio, microbial parameters including Salmonella, total and fecal coliforms were measured during the composting process (80 days). In addition, phytotoxicity as seed germination index and heavy metals concentration (Zn, Cu, Cr, Ni, Cd and Pb) was determined at the end of the composting time. Results:The results showed that the C/N ratio decreased during the composting process (reached to 15.6) due to the loss of carbon and the increase in nitrogen content per unit material; also, the NH 4 + /NO 3 ratio decreased with increase in the time of composting and reached

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Section: Introductionmentioning

confidence: 99%

Maturity and Stability Evaluation of Composted Municipal Solid Wastes

et al. 2016

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“…Among the different proposed parameters, those involving microbial respiration have been reported to be the most reliable methods for determining organic waste stability (Rynk, 2003), with alkali (NaOH) traps and automatic respirometers being frequently used. The advantages of the two methods differ.…”

Section: Introductionmentioning

confidence: 99%

The potential of NIR spectroscopy to predict stability parameters in sewage sludge and derived compost

et al. 2010

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“…Maturity is a term used to indicate the level of phytotoxic substances in composts and compost suitability for plant growth (Benito et al, 2005;Brewer and Sullivan, 2003;Rynk, 2003). There is currently no universal method for measuring compost maturity (Goyal et al, 2005;Kato et al, 2005;Mondini et al, 2003;Provenzano et al, 2001;Rynk, 2003), in part due to the many causes of phytotoxicity.…”

Section: Introductionmentioning

confidence: 99%

“…There is currently no universal method for measuring compost maturity (Goyal et al, 2005;Kato et al, 2005;Mondini et al, 2003;Provenzano et al, 2001;Rynk, 2003), in part due to the many causes of phytotoxicity. Some of the methods that have been used to measure maturity include carbon-to-nitrogen ratio (C/N), changes in nitrogen species, pH, electrical conductivity, cation exchange capacity, organic chemical constituents, reactive carbon, humification parameters, optical density, temperature, color, odor, structure, specific gravity, plant assays, respiration, microbial population changes, and enzyme activity (Epstein, 1997).…”

Section: Introductionmentioning

confidence: 99%