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eISSN: 2083-5906
ISSN: 1230-1485
ISSN: 1230-1485
ORIGINAL RESEARCH
Soil Characterization in a Silvoarable Ecosystem
from Romania: Populus deltoides (Bartram
ex Marshall) x P. nigra (L.) and Brassica napus (L.)
1
University of Life Sciences ”King Mihai I” of Timișoara, Department of Sustainable Development and Environmental
Engineering, 119 Calea Aradului, Timișoara, Romania
2
Research Centre of Bioresources, Environment and Geospatial Data, University of Life Sciences ”King Mihai I”
of Timișoara, 119 Calea Aradului, Timișoara, Romania
Submission date: 2025-05-25
Final revision date: 2025-09-28
Acceptance date: 2025-12-17
Online publication date: 2026-02-18
Publication date: 2025-12-17
Corresponding author
Mădălina Iordache
University of Life Sciences ”King Mihai I” of Timișoara, Department of Sustainable Development and Environmental Engineering, 119 Calea Aradului, Timișoara, Romania
University of Life Sciences ”King Mihai I” of Timișoara, Department of Sustainable Development and Environmental Engineering, 119 Calea Aradului, Timișoara, Romania
KEYWORDS
agroforestrypoplar clonessoil texturewinter exposurecrop borderingtree borderingintercroppingdepth-wise
TOPICS
ABSTRACT
A silvoarable ecosystem was studied in the western part of Romania (Timiș County).
This agricultural system was established by associating two plant species: a rapeseed crop (the hybrid
LG Architect of Brassica napus L .) a nd a h ybrid p oplar plantation ( Populus deltoides Bartram ex
Marshall × Populus nigra L.). The study aimed to assess several physical (particle size composition
(coarse sand (2.0-0.2 mm), fine sand (0.2-0.02 mm), silt (0.02-0.002 mm), colloidal clay (<0.002 mm),
physical clay (<0.01 mm)) and bulk density) and chemical (pH, humus, total nitrogen, plant-available
phosphorus, and plant-available potassium) parameters of soil during two seasonal periods: autumn
and spring. Different soil depths were considered: 0-30 cm in the poplar plantation and 0-10 cm
in the rapeseed crop. Generally, higher values were observed for the chemical soil parameters
in the rapeseed soil than in the poplar soil in the spring season, after winter exposure. This effect
emphasizes the enhancement of the potential of the rapeseed crop by combining it with the woody
plant (hybrid poplar) within the silvoarable system, and shows the effectiveness of this type of plant
association as an agricultural alternative, as well as the contribution of the woody plant (hybrid poplar)
to improving the soil conditions for the herbaceous crop (rapeseed). This study shows that edging crops
with trees can be a sustainable agricultural strategy.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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