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Chemical changes in an oxisol treated with pyroligneous acid

Authors :
Aluísio Hideki Togoro
Juliana Aparecida dos Santos da Silva
Jairo Osvaldo Cazetta
Source :
Ciência e Agrotecnologia, Vol 38, Iss 2, Pp 113-121 (2014)
Publication Year :
2014
Publisher :
Universidade Federal de Lavras, 2014.

Abstract

The use of pyroligneous acid (PA), a by-product of charcoal production, is an ancient practice applied in agriculture to control soil and plant pests and diseases. However, little is known about the chemical alterations that this product may cause on treated soil. Thus, the present work aimed to evaluate the effect of PA concentrations on soil ions movement and to verify possible soil chemical properties changes. Detachable columns were filled with Oxisol, submitted to application of 5 PA concentrations (0, 1, 2, 4, 8% v/v), followed by water infiltration in an amount corresponding to 1.5 times the soil total pore volume, and evaluated the soil of four depths (0-10, 10-20, 20-30, 30-40cm) and the leachate. The use of pyroligneous acid in concentrations up to 2 % (v/v) induces only slight decrease of k, Mg, basis saturation and total cation exchange capacity, in the 0-20 cm soil layer. The application of 4 % (v/v) and 8 % (v/v) pyroligneous acid induces severe increase on the potential acidity, and the decrease on the pH, basis saturation, total cation exchange capacity, and Ca concentration, in the layer of 0-20 cm soil. The P and K concentration reduces in the 0-20 cm soil layer by increasing from 1% to 8% the concentration of pyroligneous acid solution applied on soil surface. By increasing the PA concentration applied on the soil, there is increase of acidity, organic matter, P, K, Ca, and Mg, and decrease of sulfate in the leachate.

Details

Language :
English, Spanish; Castilian, Portuguese
ISSN :
19811829 and 14137054
Volume :
38
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Ciência e Agrotecnologia
Publication Type :
Academic Journal
Accession number :
edsdoj.7124a16b3f54431bb53387d838667cc8
Document Type :
article
Full Text :
https://doi.org/10.1590/S1413-70542014000200002