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- Title
Biochar and biochar with N-fertilizer affect soil N<sub>2</sub>O emission in Haplic Luvisol.
- Authors
HORÁK, Ján; KONDRLOVÁ, Elena; IGAZ, Dušan; ŠIMANSKÝ, Vladimír; FELBER, Raphael; LUKAC, Martin; BALASHOV, Eugene V.; BUCHKINA, Natalya P.; RIZHIYA, Elena Y.; JANKOWSKI, Michal
- Abstract
The benefits of biochar application are well described in tropical soils, however there is a dearth of information on its effects in agricultural temperate soils. An interesting and little explored interaction may occur in an intensive agriculture setting; biochar addition may modify the effect of commonplace N-fertilization. We conducted a field experiment to study the effects of biochar application at the rate of 0, 10 and 20 t ha-1 (B0, B10 and B20) in combination with 0, 40 and 80 kg N ha-1 of N-fertilizer (N0, N40, N80). We followed nitrous oxide (N2O) emissions, analysed a series of soil physicochemical properties and measured barley yield in a Haplic Luvisol in Central Europe. Seasonal cumulative N2O emissions from B10N0 and B20N0 treatments decreased by 27 and 25% respectively, when compared to B0N0. Cumulative N2O emissions from N40 and N80 combined with B10 and B20 were also lower by 21, 19 and 25, 32%, respectively compared to controls B0N40 and B0N80. Average pH was significantly increased by biochar addition. Increased soil pH and reduces NO-3 content seen in biochar treatments could be the two possible mechanisms responsible for reduced N2O emissions. There was a statistically significant increase of soil water content in B20N0 treatment compared to B0N0 control, possibly as a result of larger surface area and the presence of microspores having altered pore size distribution and water-holding capacity of the soil. Application of biochar at the rate of 10 t ha-1 had a positive effect on spring barley grain yield.
- Subjects
BIOCHAR; SUSTAINABLE agriculture; ALTERNATIVE agriculture; ALTERNATIVE crops; SOIL moisture; GRAIN yields
- Publication
Biologia, 2017, Vol 72, Issue 9, p995
- ISSN
0006-3088
- Publication type
Article
- DOI
10.1515/biolog-2017-0109