Abstract
The no-till system has been intensively used in the state of Paraná, Brazil, and it has increased the nutrients level at the soil surface. This has contributed for nutrient losses via runoff and consequently, off-site water pollution. The objective of this study was to evaluate phosphorus loss in surface runoff by simulated rainfall on an Oxisol, under no-till system following application of mineral fertilizer and liquid swine manure. Nitrogen, soil and water losses from the same study are reported in a separated paper. The application of liquid swine manure, compared with mineral fertilization, increased runoff concentration of total P, particulate P and dissolved reactive P by 193%, 111% and 506%, respectively, averaged for all rainfall intensities. Independently on the fertilizer source, the highest rainfall intensity provided the greatest concentration and loads of P in runoff.
Subject
Agronomy and Crop Science,Animal Science and Zoology
Reference51 articles.
1. Dissolved nitrogen and phosphorus in runoff from watersheds in conservation and conventional tillage;Alberts E.E.;Journal Soil and Water Conservation
2. Effect of liquid swine manure rate, incorporation, and timing of rainfall on phosphorus loss with surface runoff;Allen B.L.;Journal of Environmental Quality
3. Adição de ácidos orgânicos e húmicos em Latossolos e adsorção de fosfato;Andrade F.V.;Revista Brasileira de Ciência do Solo
4. Standard Methods for the Examination of Water and Wastewater,1995
5. Phosphorus budgets and riverine phosphorus export in northwestern Ohio watersheds;Baker D.B.;Journal of Environmental Quality
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