Biochemical Parameters In Soils Regenerated By The Addition Of Organic Wastes |
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| Institution: | 1. Laboratory for Molecular Dynamics of Mental Disorders, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako City, Saitama, 351-0198, Japan;2. Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan;3. Department of Molecular Brain Science, Graduate School of Life Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto City, Kumamoto, 860-8556, Japan;4. Department of Functional Brain Imaging, National Institute of Radiological Sciences, National Institute for Quantum and Radiological Sciences and Technology, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba, 263-8555, Japan;5. Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan;1. Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, NC, USA;2. University of Veterinary Medicine Hannover, Foundation, Institute of Pharmacology, Toxicology and Pharmacy, Hannover, Germany;3. Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, NC, USA;4. Institute for Pharmaceutical and Medicinal Chemistry, Heinrich Heine Universität, Düsseldorf, Germany;5. Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27607, USA |
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| Abstract: | The effect of the addition of the organic fraction from a fresh municipal solid waste on the regeneration of a degraded soil from the Mediterranean area of Spain was studied. Sufficient waste to increase the organic matter of the soils by 0.5%, 1%, 1.5% and 2% was applied to a field in plots with a 10% incline. Forty months after treatment, increases were observed in organic matter, available nitrogen, water soluble carbohydrates and compounds determined by the Folin method (polyphenols and proteins) in all the treated plots as compared to the control. Changes were the greatest in the plot whose organic matter had been increased to 1.5%. An increase in enzymatic activity was also noticed (urease, BAA hydrolysed by protease, casein hydrolysed by protease, phosphatase, β-glucosidase and dehydrogenase) in the treated soils, particularly those which received higher rates of waste. The extracellular enzymatic activity of the plots treated with higher doses also increased, indicating a regeneration of the soils from a biochemical viewpoint. A positive correlation was observed between the parameters referring to microbial biomass and the enzymatic activities determined in the soils. |
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