cover image: Greenhouse gas emissions from Silphium perfoliatum and silage maize cropping on Stagnosols

20.500.12592/p0scjb

Greenhouse gas emissions from Silphium perfoliatum and silage maize cropping on Stagnosols

22 Nov 2022

Therefore, the increased sustainability of bioenergy from biogas by replacing maize with cup plant is heavily dependent on the performance of maize at these sites and on the ecosystem services of cup plant in addition to GHG savings. [...] Pairwise compar- GHG fluxes were quantified from the accumulation of gas concen- isons within the site-pairs were conducted with pairwise t-tests and trations in the headspace during the closure time of the chambers. [...] With a mean soil pH of 5.21 ± 0.79 and 6.10 ± 0.36 in cup plant The reduction over the winter in Nmin in 0–30 cm in maize did not and maize, respectively, soil pH tended (p = 0.2) to be lower in cup result in higher Nmin contents in deeper soil (Figure S2). [...] The lower emissions during the growing season in the drier crop year of 2020/21 resulted in comparable (p = 0.12) emissions from the grow- 3.5.2 Nitrogen ing and winter seasons. [...] rapidly, resulting in higher Nmin availability during the growing seasons The soil moisture monitored in the individual cup plant and maize and in the fall, especially in the drier season of 2020/21 (Figure 2).
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16
Published in
Germany