ISHS Acta Horticulturae 388: International Symposium on Viticulture and Enology
CHANGES IN THE ORGANIC FRACTIONS ON COMPOSTING AZOTOBACTER-INOCULATED GRAPE MARC |
| Authors: | E. del Rosal, I.C. Benítez, M.C. Millán, J.L. González, M. Medina |
| Keywords: | compost, marc, Azotobacter |
| Abstract:
Changes undergone by the organic fractions on composting of marc from Vitis vinifera "Pedro Ximénez" grapes, inoculated with Azotobacter vinelandii, are studied. According to the results obtained, the fermentation stage spans the first 30 days of the process and is followed by the maturity stage. Also, the former stage involves mineralization processes preferentially, whereas humification prevails in the later stages of the process. According to the final parameters of the products, inoculation with A. vinelandii appears to have no effect other than increasing the extent of polymerization of the humic and fulvic acid fractions. | |
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