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Composted Oyster Shell as Lime Fertilizer Is More Effective Than Fresh Oyster Shell.

06:00 EDT 12th August 2010 | BioPortfolio

Summary of "Composted Oyster Shell as Lime Fertilizer Is More Effective Than Fresh Oyster Shell."

Physio-chemical changes in oyster shell were examined, and fresh and composted oyster shell meals were compared as lime fertilizers in soybean cultivation. Structural changes in oyster shell were observed by AFM and FE-SEM. We found that grains of the oyster shell surface became smoother and smaller over time. FT-IR analysis indicated the degradation of a chitin-like compound of oyster shell. In chemical analysis, pH (12.3+/-0.24), electrical conductivity (4.1+/-0.24 dS m(-1)), and alkaline powder (53.3+/-1.12%) were highest in commercial lime. Besides, pH was higher in composted oyster shell meal (9.9+/-0.53) than in fresh oyster shell meal (8.4+/-0.32). The highest organic matter (1.1+/-0.08%), NaCl (0.54+/-0.03%), and moisture (15.1+/-1.95%) contents were found in fresh oyster shell meal. A significant higher yield of soybean (1.33 t ha(-1)) was obtained by applying composted oyster shell meal (a 21% higher yield than with fresh oyster shell meal). Thus composting of oyster shell increases the utility of oyster shell as a liming material for crop cultivation.

Affiliation

Division of Plant Environmental Research, Gyeongsangnam-do Agricultural Research and Extension Service.

Journal Details

This article was published in the following journal.

Name: Bioscience, biotechnology, and biochemistry
ISSN: 1347-6947
Pages:

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