Abstract
In Europe, Rumex obtusifolius L. is the most problematic grassland weed species, especially under the conditions of organic farming. The aims of this study were (1) to investigate the effectiveness of repeated mechanical weeding of R. obtusifolius from the permanent sward, cut two or three times per year, by digging the plants out from 5 cm below the soil surface, and (2) to test the effect of nutrient availability on the effectiveness of mechanical weeding. In 2007, the manipulative experiment was established on permanent grassland infested by R. obtusifolius using the following fertilizer treatments: control, P, N, NP and NPK. Plants of R. obtusifolius were removed eight times during three vegetation seasons. No significant decrease in the density of R. obtusifolius was recorded after three vegetation seasons and density was not significantly affected by fertilizer treatment. The cover of R. obtusifolius decreased slightly, but significantly, over the study period from 7.5% to 4.5%. The cover of R. obtusifolius was only marginally affected by fertilizer treatment. Mechanical weeding by digging the plants out from 5 cm below the ground is not a sufficient method of control for R. obtusifolius in infested fertile grasslands, even when applied eight times during three vegetation seasons.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Repeated mechanical removal of Rumex obtusifolius did not significantly decrease its density after three seasons.
- Taxon
- Rumex obtusifolius
Rumex obtusifoliust0 - Treatment
- removed eight times during three vegetation seasonse1
- Outcome
- densitye2
- Direction
- No significant decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rumex obtusifolius”
e1“Plants of R. obtusifolius were removed eight times during three vegetation seasons”
e2“No significant decrease in the density of R. obtusifolius was recorded after three vegetation seasons and density was not significantly affected by fertilizer treatment”
Claim · model-written summary
Density of Rumex obtusifolius was not significantly affected by fertilizer treatment.
- Taxon
- Rumex obtusifoliusRumex obtusifoliust0
- Treatment
- fertilizer treatmente2
- Outcome
- densitye2
- Direction
- not significantly affectede2
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rumex obtusifolius”
e0“using the following fertilizer treatments: control, P, N, NP and NPK”
e2“No significant decrease in the density of R. obtusifolius was recorded after three vegetation seasons and density was not significantly affected by fertilizer treatment”
Claim · model-written summary
Cover of Rumex obtusifolius decreased slightly but significantly, from 7.5% to 4.5%, over the study period.
- Taxon
- Rumex obtusifoliusRumex obtusifoliust0
- Outcome
- covere3
- Direction
- decreasede3
- Value
- 7.5% to 4.5%e3
- Qualifier
- slightlye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rumex obtusifolius”
e3“The cover of R. obtusifolius decreased slightly, but significantly, over the study period from 7.5% to 4.5%”
Claim · model-written summary
Cover of Rumex obtusifolius was only marginally affected by fertilizer treatment.
- Taxon
- Rumex obtusifoliusRumex obtusifoliust0
- Treatment
- fertilizer treatmente4
- Outcome
- covere4
- Direction
- only marginally affectede4
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rumex obtusifolius”
e0“using the following fertilizer treatments: control, P, N, NP and NPK”
e4“The cover of R. obtusifolius was only marginally affected by fertilizer treatment”
Claim · model-written summary
Repeated mechanical digging is not a sufficient control method for Rumex obtusifolius in infested fertile grasslands.
- Taxon
- Rumex obtusifoliusRumex obtusifoliust0
- Outcome
- sufficient method of controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rumex obtusifolius”
e5“Mechanical weeding by digging the plants out from 5 cm below the ground is not a sufficient method of control for R. obtusifolius in infested fertile grasslands”
The same questions in other papers
fertilization · growth · Rumex obtusifolius (bitter dock)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.