Soil Respiration under 90 Year-Old Rye Monoculture and Crop Rotation in the Climate Conditions of Central Poland

Agronomy

Magdalena Szymańska¹  Ewa Szara¹  Tomasz Sosulski¹  Piotr Sulewski² 

[1] Department of Agricultural Chemistry, Institute of Agriculture, Warsaw University of Life Sciences, Nowoursynowska 159, 02-766 Warsaw, Poland;Institute of Economics and Finances, Warsaw University of Life Sciences, Nowoursynowska 166, 02-787 Warsaw, Poland;

关键词: long-term experiment;    GHG emissions;    monoculture and crop rotation;    legumes;    fertilization;   

DOI  :  10.3390/agronomy11010021

来源: DOAJ

【 摘 要 】

This study, aimed at assessing the rate of soil respiration under different crop rotation and fertilization conditions, was carried out on long-term (since 1923) experimental plots with rye monoculture and 5-crop rotation in Skierniewice (Central Poland). The treatments included mineral-organic (CaNPK+M) and organic (Ca+M) fertilization (where M is farmyard manure). Soil respiration was measured in situ by means of infrared spectroscopy using a portable FTIR spectrometer Alpha. CO₂ fluxes from CaNPK+M-treated soils under cereals cultivated in monoculture and crop rotations were not statically different. Respiration of soil under lupine cultivated in crop rotation was higher than under cereals. N-fertilization and its succeeding effect increased soil respiration, and significantly altered its distribution over the growing season. Our results indicate that in the climatic conditions of Central Europe, respiration of sandy soils is more dependent on the crop species and fertilization than on the crop rotation system. Omission of mineral fertilization significantly decreases soil respiration. The CO₂ fluxes were positively correlated with soil temperature, air temperature, and soil content of NO₃⁻ and NH₄⁺.

【 授权许可】

Unknown