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@INPROCEEDINGS{Jablonowski:915939,
author = {Jablonowski, Nicolai David and Ohrem, Benedict and Cohnen,
Jens and von Gillhaussen, Philipp and Cossel, Moritz von},
title = {{C}omparing various weed treatments and their influence on
the establishment and biomass yield of {S}ida hermaphrodita
{L}. {R}usby under field conditions},
reportid = {FZJ-2022-05802},
year = {2022},
abstract = {Aim and approach used: The perennial herbaceous plant Sida
hermaphrodita L. Rusby (hereafter referred to as Sida) has
been investigated in the recent years with regard to its
potential as a promising energy crop for both solid fuel and
biogas production. However, its successful establishment in
the field remains a crucial bottleneck, and needs particular
care to guarantee sufficient biomass yield in subsequent
years. To investigate in how far Sida can be established in
competition with weeds, a field experiment has been
implemented in Western Germany: Sida root cuttings were
planted in a density of 2 plants/m2, on a total area of 420
m2 in March 2021. This field trial was aimed at identifying
the most non-invasive and sustainable establishing practice
for Sida under both ecological and economical aspects. Five
treatments were tested regarding their effect on the local
weed establishment and hence their competitive effects on
the target Sida plants, consisting of four replicates, each
3x6 m, in a completely randomized design: (i) a layer of
Miscanthus mulch, (ii) manual weeding, (iii) herbicide
application, (iv) cover-cropping with Trifolium repens L.
(living mulch), and (v) negative control. In November 2021,
weed species’ relative abundance and species specific
ground cover were determined in each sub-plot. Tiller number
and biomass yield of the target crop Sida will be evaluated
in spring 2022 for each treatment, aiming for the
identification of the most suitable and sustainable weed
treatment during Sida establishment and in the long-term.
The Sida biomass development will be regularly monitored in
reference to the co-occurring weeds during the following
years.Scientific innovation and relevance: The
identification of a successful, low-cost, environmental
friendly and sustainable Sida-establishment practice is
needed to guarantee a successful plant establishment and
high biomass yields in return. Identifying alternative
cropping systems is important since the application of
broad-spectrum herbicides such as glyphosate to suppress
weeds should be reduced on EU level. Additionally,
evaluating the ability of Sida to compete against different
degrees of weed pressure during its establishment phase is
important to estimate the initial investment needs (e.g.
weed control, etc.) and the resulting biomass yields.Results
or preliminary results and conclusions: During the
vegetation period in 2021, it was shown that Sida growth was
highly affected by weeds in all treatments, except for
“manual weed control”. However, the treatments had
different effects on the weed’s relative abundance and
species composition, while Miscanthus mulch suppressed most
weed species except for Cirsium arvense. In spring 2022, the
biomass yields of Sida will be determined and statistically
analyzed with regard to both the applied treatments and the
determined weed abundance. Based on these results,
preliminary conclusions will be drawn and presented at the
EUBCE 2022.},
month = {May},
date = {2022-05-09},
organization = {30th European Biomass Conference $\&$
Exhibit, online (Germany), 9 May 2022 -
12 May 2022},
subtyp = {Invited},
cin = {IBG-2},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217)},
pid = {G:(DE-HGF)POF4-2171},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/915939},
}