Manual weeding of Rumex obtusifolius and its effects on plant species composition in organically managed grassland

Hujerová, R.; Pavlů, Lenka; Pavlů, V.; Gaisler, J.; Hejcman, Michal; Ludvíková, V.

doi:10.1007/s10340-015-0683-x

Cited by 5 publications

(4 citation statements)

References 21 publications

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“…In addition to generative reproduction, R. obtusifolius can expand through a phalanx clonal growth strategy, resulting in a dense nest of ramets that can occupy an area of several tens of square metres around the mother plant (Pino et al ., ). Individual plants can survive in the grassland sward for more than 8 years, although a high proportion can die within 5 years under conditions of low N, P and K availability and no grassland management (Pavlů et al ., ; Martinková et al ., ; Hujerová et al ., ; Hann et al ., ; Hejcman et al ., ). Rumex obtusifolius regrows well after cutting (Martinková & Honěk, ) and therefore does not suffer under a management system of cutting performed twice per year (Strnad et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Effect of cutting frequency on above‐ and belowground biomass production of Rumex alpinus, R. crispus, R. obtusifolius and the Rumex hybrid (R. patienta × R. tianschanicus) in the seeding year

et al. 2013

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Summary Rumex species are important weeds in grasslands and on arable land. The Rumex hybrid (R. patienta × R. tianschanicus; cv. OK‐2, Uteusha) has been planted as a forage and energy crop since 2001 in the Czech Republic, but its ecological requirements and its potential to become a new weedy species have never been investigated. In 2010 and 2011, we performed a pot experiment to investigate the effect of none, one and two cuts per year on biomass production of Rumex OK‐2 and common broad‐leaved Rumex species (Rumex obtusifolius, R. crispus and R. alpinus). The higher cutting frequency can reduce the belowground biomass, but no effect on the aboveground biomass was detected. Flowering in the seeding year was recorded in only 50% of R. obtusifolius plants. Non‐flowering R. obtusifolius plants produced significantly more belowground biomass than flowering plants under no cutting or one cut treatments. The growth response of Rumex OK‐2 to different cutting treatments was very similar to R. crispus. These similarities indicate the weed potential of the hybrid to become a troublesome weedy species, similar to R. crispus.

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Section: Introductionmentioning

confidence: 99%

Effect of cutting frequency on above‐ and belowground biomass production of Rumex alpinus, R. crispus, R. obtusifolius and the Rumex hybrid (R. patienta × R. tianschanicus) in the seeding year

et al. 2013

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“…The proportion of below‐ground biomass of Rumex species in the upper 30 cm was about 70–80%, whereas only 20–30% was allocated deeper than 30 cm. This has consequences for possible control measures, such as digging out or soil cultivation (Hujerová et al ., ). Flowering in the seeding year, which is typical for R. obtusifolius plants, occurred in only one plant of Rumex OK‐2.…”

Section: Discussionmentioning

confidence: 97%

Dynamics of above‐ground and below‐ground biomass of Rumex crispus, Rumex obtusifolius and the new weedy species Rumex hybrid cv. OK‐2 (R. patientia x R. tianschanicus) in the seeding year

Hujerová

Pavlů

et al. 2017

Weed Research

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Dynamics of above-ground and below-ground biomass of Rumex crispus, Rumex obtusifolius and the new weedy species Rumex hybrid cv. OK-2 Summary Docks can be serious weeds of arable land and permanent grasslands where they can persist through wellestablished root systems. A Rumex hybrid (R. patientia x R. tianschanicus; cv. OK-2, Uteusha) has been planted as a forage and energy crop since 2001 in Czechia and has now become a new weed species. As its ecological characteristics are unknown, there is a need for improved knowledge for developing control measures and strategies. In 2010 and 2011, we performed a tube pot experiment to investigate above-ground and below-ground biomass growth dynamics and below-ground biomass allocation of Rumex OK-2. We compared the hybrid with Rumex crispus and Rumex obtusifolius during the vegetation season in the seeding year. Above-ground and below-ground biomass of Rumex species tended to increase from July to September. In the seeding year, flowering was recorded only for one plant of Rumex OK-2 and 27.5% of R. obtusifolius plants, whereas R. crispus did not flower. The proportion of below-ground biomass of Rumex species in the upper 30 cm was about 70-80%. The growth dynamics and allocation of below-ground biomass of Rumex OK-2 were more like R. crispus than to R. obtusifolius. These similarities indicate the potential of Rumex OK-2 to become a troublesome weedy species, comparable with R. crispus.Keywords: broad-leaved dock, curled dock, Rumex OK-2, biomass allocation, soil depth, root system. HUJEROVA R, PAVL U L, PAVL U V, HEJCMAN M & GAISLER J (2017). Dynamics of above-ground and below-ground biomass of Rumex crispus, Rumex obtusifolius and the new weedy species Rumex hybrid cv. OK-2 (R. patientia x R. tianschanicus) in the seeding year. Weed Research 57, 81-90.

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“…The treatment must be repeated in subsequent years to be effective. An effective, non‐chemical way to control Rumex is to dig out the taproot to a depth of 0.15 m (Zaller, ; Hujerova et al ., ). Although this procedure presents a high success rate of 90% (Roy Latsch, Agroscope, unpublished data), it is very labour‐intensive.…”

Section: Introductionmentioning

confidence: 97%

Weekly defoliation controls, but does not kill broad‐leaved dock (Rumex obtusifolius)

et al. 2020

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Summary Broad‐leaved dock (Rumex obtusifolius L.) is a troublesome weed that predominantly grows in pastures and grassland. We hypothesised that frequent defoliation of Rumex will, over time, result in a reduction in root weight and leaf area, to the point where the impact on grass production is negligible. In order to investigate this hypothesis, we conducted three experiments. The objective of the first experiment was to perform a preliminary test of the hypothesis, using potted plants growing in the controlled conditions of a glasshouse. This experiment showed a rapid decline in leaf growth in plants that were defoliated weekly. The objective of the second experiment was to test the hypothesis in realistic outdoor conditions while still being able to collect detailed plant growth information. This experiment confirmed the findings of the glasshouse experiment and provided evidence that leaf growth ceased as a result of a dwindling supply of carbohydrate reserves in the root. Defoliated plants did not exhibit increased mortality. Finally, the objective of the third experiment was to test the hypothesis in a commercial pasture where normal field operations, specifically grass harvesting (three times) and slurry injection (twice), were performed. The results of this experiment were consistent with the results of the other two experiments. We conclude that weekly defoliation, maintained for three or more months, is an effective method to control (reduce the impact on grass production), but not kill, R. obtusifolius in pasture.

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Manual weeding of Rumex obtusifolius and its effects on plant species composition in organically managed grassland

Cited by 5 publications

References 21 publications

Effect of cutting frequency on above‐ and belowground biomass production of Rumex alpinus, R. crispus, R. obtusifolius and the Rumex hybrid (R. patienta × R. tianschanicus) in the seeding year

Effect of cutting frequency on above‐ and belowground biomass production of Rumex alpinus, R. crispus, R. obtusifolius and the Rumex hybrid (R. patienta × R. tianschanicus) in the seeding year

Dynamics of above‐ground and below‐ground biomass of Rumex crispus, Rumex obtusifolius and the new weedy species Rumex hybrid cv. OK‐2 (R. patientia x R. tianschanicus) in the seeding year

Weekly defoliation controls, but does not kill broad‐leaved dock (Rumex obtusifolius)

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