LEACHING OF NITROGEN IN COLUMN IN REGARDING SOIL PARTICLE SIZE

Authors

  • Rubens FEY Universidade Estadual do Oeste do Paraná
  • Tiago ZOZ Universidade Estadual do Oeste do Paraná
  • Fabio STEINER Universidade Estadual do Oeste do Paraná
  • Alfredo RICHART Pontifícia Universidade Católica do Paraná
  • Osmar Rodrigues BRITO Universidade Estadual de Londrina

DOI:

https://doi.org/10.5380/rsa.v11i2.16461

Keywords:

Key-words, texture of soil, ammonium sulphate, potassium nitrate, Palavras-chave, textura do solo, sulfato de amônio, nitrato de potássio.

Abstract

The quantity of nitrogen that can be leachate is principally influenced by factors that determine the flow of water on the soil, like the texture and structure, as well by the concentration and form of the nitrogen present in the soil. This work has as objective to evaluate the leaching of nitrogen regarding the soil particle-size. The experimental adopted was entirely randomized with arrangement factorial 5 x 2, with five soils (three Ultisol, one alfisol and one oxisol)  with different particle-size (37.5; 132.5; 315.0; 491.2 e 546.0 g kg-1 of clay), collected in the region north of the Paraná State, and two nitrogen sources (potassium nitrate and ammonium sulphate) with four repetitions. One treatment witness without nitrogen was included to allow additional statistical tests. The soil were packed in columns of PVC with 25 cm of height and 4 cm of diameter, and posteriorly irrigated until the field capacity. The sources of nitrogen were applied in the quantity equivalent to 65 kg ha-1 of N and afterwards, was applied 150 cm3 of distilled water, corresponding to a precipitation of 180 mm. The use of KNO3, potassium nitrate resulted in higher N losses by leaching, compared to ammonium sulfate, presenting a negative correlation with clay content.

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Published

2009-12-23

How to Cite

FEY, R., ZOZ, T., STEINER, F., RICHART, A., & BRITO, O. R. (2009). LEACHING OF NITROGEN IN COLUMN IN REGARDING SOIL PARTICLE SIZE. Scientia Agraria, 11(2), 181–185. https://doi.org/10.5380/rsa.v11i2.16461

Issue

Section

Scientific Notes