The impact of different cutting regimes on population density of Jacobaea aquatica (Hill) G. Gaertn., B. Mey. &amp; Scherb. and grassland vegetation

Bassler, Gabriele; Karrer, Gerhard; Kriechbaum, Monika

doi:10.1016/j.agee.2016.04.018

Cited by 9 publications

(26 citation statements)

References 20 publications

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“…Therefore at least the forage harvested during this period should not be fed to domestic animals. Mowing during flowering, twice in July and August, could efficiently reduce the seed production (Bassler et al., ). Because of the presence of J. aquatica still in the rosette stage and the seed bank, which proved to be very variable at the different sites, a reduction in population densities will need several years.…”

Section: Resultsmentioning

confidence: 99%

“…In a study of Bassler et al. (), such a cutting regime suppressed seed production and population growth.…”

Section: Methodsmentioning

confidence: 97%

“…In treatment B, the plots were mown at full flowering in early July, and again in early August, when an already flowering regrowth had established. In a study of Bassler et al (2016), such a cutting regime suppressed seed production and population growth.…”

Section: Study Sites and Designmentioning

confidence: 99%

“…There are few reports on pyrrolizidine alkaloids in J. aquatica (Cheng, Kirk, Mulders, Vrieling, & Klinkhamer, 2011;Christov, Mikhova, & Evstatieva, 2002;Kirk et al, 2004Kirk et al, , 2010. Recently, a study in the Austrian Waldviertel region compared the growth and population dynamics of J. aquatica from meadow plots that underwent five different mowing regimes (Bassler, Karrer, & Kriechbaum, 2016). The alkaloid production was also evaluated and a high variability in alkaloid contents occurred (Chizzola, Bassler, Kriechbaum, & Karrer, 2015).…”

mentioning

confidence: 99%

“…A general life span of J. aquatica of at least 2-6 years has been observed. The density of individuals of every age decreased after 3 years of application(Bassler, Karrer, & Kriechbaum, 2013;Bassler et al, 2016). Reduction in flowering plants can only first be expected after four years, because of the age of the plants Suter and Lüscher (2011).…”

mentioning

confidence: 99%

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Pyrrolizidine alkaloid production of Jacobaea aquatica and contamination of forage in meadows of Northern Austria

Chizzola

Bassler-Binder

Karrer

et al. 2018

Grass and Forage Science

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Jacobaea aquatica (=Senecio aquaticus, Asteraceae), marsh ragwort, grows regionally in low management intensity wet grasslands in various European countries. The plant can be regarded as a noxious weed as it contains pyrrolizidine alkaloids (PAs), which cause health problems in livestock. In the Waldviertel region of Northern Austria, marsh ragwort has established dense populations as the fertilizing and production intensity of the meadows changed during the last decades. Ragwort biomass production and alkaloid concentration in J. aquatica were recorded during three consecutive years at three sites to study the effects of two treatments: cutting twice a year either early in June plus September, or in July plus August, respectively. Six PAs (Z‐erucifoline > senecionine > integerrimine > seneciphylline > acetyl‐erucifoline and acetyl‐seneciphylline) were evaluated. The alkaloid contents were highest in July and August when 600–1,400 mg/kg dry matter (DM) total PAs occurred in most ragwort samples. Consequently, the forage can easily be contaminated with 40–80 mg/kg DM of PAs and may present a health risk for domestic animals and also affect human health as these alkaloids are transferred into milk.

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Section: Resultsmentioning

confidence: 99%

“…In a study of Bassler et al. (), such a cutting regime suppressed seed production and population growth.…”

Section: Methodsmentioning

confidence: 97%

Section: Study Sites and Designmentioning

confidence: 99%