Assessing the impact of management practices on gas emissions and N losses calculated with denitrification-decomposition model
PBN-AR
Instytucja
Instytut Uprawy Nawożenia i Gleboznawstwa - Państwowy Instytut Badawczy
Informacje podstawowe
Główny język publikacji
en
Czasopismo
PLANT SOIL AND ENVIRONMENT
ISSN
1214-1178
EISSN
Wydawca
CZECH ACAD AGRIC SCI
DOI
URL
Rok publikacji
2015
Numer zeszytu
10
Strony od-do
433-437
Numer tomu
61
Identyfikator DOI
Liczba arkuszy
Autorzy
(liczba autorów: 2)
Słowa kluczowe
en
crop rotation
modelling
agricultural practice
carbon dioxide
macronutrient
Streszczenia
Język
en
Treść
The study presents the impact of management practices on greenhouse gas emissions (GHG) and nitrogen (N) losses calculated with a denitrification-decomposition model. Two cropping systems were analysed. The first rotation (A) consisted of potato, winter wheat, spring barley and corn. The second (B) included potato, winter wheat, spring barley and clover with grasses mixture. In A1 and B1 scenarios, fluxes were estimated on the basis of mineral fertilizers input, whereas in A2 and B2 scenarios the assessment of emissions was made with regards to manure. The results indicated that the application of manure in A rotation led to the increase of nitrous oxide (N2O) emission, N leaching, N surplus, crop yields, and the decrease of nitrogen use efficiency higher than in B rotation. Additional doses of manure in A2 scenario increased the potential of the accumulation of soil organic carbon (SOC) and global warming potential (GWP) by 157%. In B2 scenario, SOC augmented more than three-fold but GWP increased only by 10%. The N losses and GHG emissions could be minimised by controlling N application through the implementation of nutrient management plan in which N doses are defined based on the crop needs and soil quality.
Cechy publikacji
ORIGINAL_ARTICLE
Inne
System-identifier
740483
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