Phosphorus loss by surface runoff in no-till system under mineral and organic fertilization

Authors

  • Oromar João Bertol EMATER
  • Nivaldo Eduardo Rizzi UFPR; Depto. de Solos e Engenharia Agrícola
  • Nerilde Favaretto UFPR; Depto. de Solos e Engenharia Agrícola
  • Maria do Carmo Lana UNIOESTE; Centro de Ciências Agrícolas

DOI:

https://doi.org/10.1590/S0103-90162010000100010

Keywords:

liquid swine manure, water quality, eutrophication, soil erosion, conservation tillage

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.

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Published

2010-02-01

Issue

Section

Soils and Plant Nutrition

How to Cite

Phosphorus loss by surface runoff in no-till system under mineral and organic fertilization . (2010). Scientia Agricola, 67(1), 71-77. https://doi.org/10.1590/S0103-90162010000100010