Received: February 1st, 2023 ; Accepted: April 8th, 2023 ; Published: April 24th, 2023 ; Correspondence: [email protected] significant reduction in greenhouse gas (GHG) emissions, as well as technologies
that ensure removal of CO2 from the atmosphere, are necessary to achieve the set goals for the
transition to carbon neutrality. During the crop growth cycle, a significant amount of biomass is
produced, and carbon (C) and nitrogen (N) are captured both by the harvested crop removed from
the field and by residues left on the field. The trials were conducted to find out patterns between
crop and residues while trying to figure out the amount of captured C and N. In this study data of
the most widely grown cereal crops in Latvia are summarized. The data are representative,
obtained in different agroclimatic conditions, they vary both by species and variety, by year and
fertilizers applied. The mean amount of biomass from cereal crops left on the field was
1,070.9 g m-2 DM, besides, 906.7 g m-2 of that was made up of above-ground (AG) residues and
164.2 g m-2 of below-ground (BG) residues. On average, 471.8 g m-2 C and 14.3 g m-2 N were
captured, including: 411.2 g m-2 C and 12.9 g m-2 N by AG residues; 60.7 g m-2 C and 1.4 g m-2
N by BG residues. Regularities between grain yield and residues were found, however, they were
not very strong. The dataset should be enlarged to reduce uncertainty. As the data calculated from
crop have a greater uncertainty, the GHG inventory should be calculated according to the average
AG and BG biomass, which provide more accurate data
