Effect of Landfill Leachate on Cereal Nutrition and Productivity and on Soil Properties
| Autor: | Martha Viviana Torres Cely, Waldemar Zangaro, Marco Antonio Nogueira, Diva S. Andrade, Cristiane Alcantara dos Santos, Biana Harumi Kuwano, V. N. M. Cervantes, Luciana C. Panchoni, Admilton G. Oliveira-Júnior, Kellen Banhos do Carmo, Galdino Andrade, Dáfila S.L. Fagotti |
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| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Sodium chemistry.chemical_element 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Soil chemistry.chemical_compound Nutrient Nitrate Soil Pollutants Leachate Leaching (agriculture) Cropping system Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Nitrates biology food and beverages 04 agricultural and veterinary sciences biology.organism_classification Pollution Waste Disposal Facilities Agronomy chemistry Avena strigosa 040103 agronomy & agriculture Urea 0401 agriculture forestry and fisheries Edible Grain Water Pollutants Chemical |
| Zdroj: | Journal of Environmental Quality. 45:1080-1086 |
| ISSN: | 0047-2425 |
| DOI: | 10.2134/jeq2015.06.0281 |
| Popis: | Landfill leachates carry nutrients, especially N and K, which can be recycled in cropping systems. We applied doses of landfill leachate (0 [Control], 32.7, 65.4, 98.1, and 130.8 m³ ha⁻¹) three times in 2008 and three times in 2009 on a clay Rhodic Kandiudult soil. In 2009, black oat (Avena strigosa L.) and corn (Zea mays L.) were cropped in succession and assessed for concentration of nutrients in leaves and for shoot biomass and grain yield, respectively. As a positive control, an additional treatment with urea (120 kg ha⁻¹ of N) was studied in corn. Soil was sampled at four depths (down to 60 cm) in three sampling dates to assess chemical and biochemical properties. Concentration of nutrients in leaves, oat biomass (8530–23,240 kg ha⁻¹), and corn grain yield (4703–8807 kg ha⁻¹) increased with increasing doses of leachate. There was a transient increase in the concentration of nitrate in soil (3–30 mg kg⁻¹), increasing the risk of N losses by leaching at doses above 120 kg ha⁻¹ N, as revealed by an estimated N balance in the cropping system. Sodium and K in soil also increased with increasing doses of leachate but decreased as rainfall occurred. The activity of dehydrogenase decreased about 30% from the control to the highest dose of leachate and urea, suggesting an inhibitory effect of mineral N on microbial metabolism. Landfill leachate was promising as a source of N and K for crop productivity and caused minor or transient effects on soil properties. |
| Databáze: | OpenAIRE |
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