Publication Date
1997
Description
The objective of this study is to show the effect of extensive practices on the population dynamics of a grassland species (Chaerophyllum aureum) in order to control invasion process. Fertilisation intensity (none or 45g/m2), number (none, one or two) and date of cutting (before or after seed maturity) have been experienced on permanent plots in fields to follow consequences on demography of adults and seedlings. Adult density is regulated through cutting effect and intraspecific competition process. Reduction of competition by cutting leads to a paradoxal highest adult survival rate in on cut treatment compared with abandoned invaded fields. Cutting seems to reduce seeds storage ability of this species and the effect of adult competition against seedlings at emergence. Surprisingly, one late cut is more severe on seedling survival than two successive cuts.
Citation
Magda, D, "Impact of Extensive Management on Demography of One Invasive Species of Permanent Grasslands" (2024). IGC Proceedings (1997-2023). 6.
https://uknowledge.uky.edu/igc/1997/session15/6
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Impact of Extensive Management on Demography of One Invasive Species of Permanent Grasslands
The objective of this study is to show the effect of extensive practices on the population dynamics of a grassland species (Chaerophyllum aureum) in order to control invasion process. Fertilisation intensity (none or 45g/m2), number (none, one or two) and date of cutting (before or after seed maturity) have been experienced on permanent plots in fields to follow consequences on demography of adults and seedlings. Adult density is regulated through cutting effect and intraspecific competition process. Reduction of competition by cutting leads to a paradoxal highest adult survival rate in on cut treatment compared with abandoned invaded fields. Cutting seems to reduce seeds storage ability of this species and the effect of adult competition against seedlings at emergence. Surprisingly, one late cut is more severe on seedling survival than two successive cuts.
