Soil pH and sorptive parameters after additions of biochar and biochar with nitrogen

Šimanský, Vladimír; Horák, Ján

Soil pH and sorptive parameters after additions of biochar and biochar with nitrogen

2017

Šimanský, Vladimír | Horák, Ján

Application of biochar to the soil could improve soil parameters such as: soil pH or sorptive parameters. A fi eld experiment investigating eff ects of diff erent biochar application rates combined with nitrogen fertilizer was conducted at the locality Dolna Malanta on a Haplic Luvisol in 2014. The aim of this study was to study the eff ects of biochar and biochar combined with fertilization on soil pH and sorptive parameters. Soil samples were collected from plots exposed to the following treatments: 1. B0N0 – no biochar, no N fertilization, 2. B10N0 – biochar (10 t·ha–1), 3. B20N0 – biochar (20 t·ha–1), 4. B10N40 – biochar (10 t·ha–1) + fertilizer (40 kg·ha–1 N), 5. B20N40 – biochar (20 t·ha–1) + fertilizer (40 kg·ha–1 N), 6. B10N80 – biochar (10 t·ha–1) + fertilizer (80 kg·ha–1 N), 7. B20N80 – biochar (20 t·ha–1) + fertilizer (80 kg·ha–1 N). The results showed that applied biochar to the soil increased the soil pH and improved the sorption parameters of the studied Haplic Luvisol. These eff ects were most intensive after application of biochar at the rate of 10 t·ha–1 combined with 40 kg·ha–1 of nitrogen. If the biochar was applied separately, a more favorable effects were observed at the dose of 20 t·ha–1 compared to the lower dose (10 t·ha–1). Our results highlighted the fact that after the application of biochar and biochar in combination with N fertilization, the sorption complex became fully saturated.

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