Abstract
Common ragweed (Ambrosia artemisiifolia L.) spread across Europe and other regions is becoming a serious health and economic threat. A pot experiment was conducted in 2011 to determine effect of various nitrogen (N) (10, 100 kg/ha) and water supply regime on resource use efficiency of ragweed. Ragweed plants increased their dry matter production with increased water and N availability. Nitrogen use efficiency (NUE) was decreased with N addition and was not influenced by water availability. Mean nitrogen residence time (MRT) was longer at low N and water levels. In contrast, nitrogen productivity (NP), NUE and water use efficiency (WUE) were all increased with enhanced water supply. A trade-off between parameters of NUE was attributed to differential response of NP and MRT to soil fertility and water supply. Our results confirmed that ragweed displayed high adaptation to unproductive sites. However, ragweed’s greater plasticity in response to water availability compared to N availability suggest, that water supply plays important role in its invasion success and in combination with disturbance ragweed might further spread into more productive environments.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 9
Claim · model-written summary
Ragweed dry matter production increased with increased water and N availability.
Verbatim
e0“A pot experiment was conducted in 2011 to determine effect of various nitrogen (N) (10, 100 kg/ha) and water supply regime on resource use efficiency of ragweed”
e1“Ragweed plants increased their dry matter production with increased water and N availability”
Claim · model-written summary
Nitrogen use efficiency of ragweed decreased with N addition.
Verbatim
e1“Ragweed plants increased their dry matter production with increased water and N availability”
e2“Nitrogen use efficiency (NUE) was decreased with N addition and was not influenced by water availability”
Claim · model-written summary
Nitrogen use efficiency of ragweed was not influenced by water availability.
Verbatim
e1“Ragweed plants increased their dry matter production with increased water and N availability”
e2“Nitrogen use efficiency (NUE) was decreased with N addition and was not influenced by water availability”
Claim · model-written summary
Nitrogen productivity, NUE and water use efficiency of ragweed all increased with enhanced water supply.
Verbatim
e1“Ragweed plants increased their dry matter production with increased water and N availability”
e4“nitrogen productivity (NP), NUE and water use efficiency (WUE) were all increased with enhanced water supply”
Claim · model-written summary
Mean nitrogen residence time of ragweed was longer at low N and water levels.
Verbatim
e1“Ragweed plants increased their dry matter production with increased water and N availability”
e3“Mean nitrogen residence time (MRT) was longer at low N and water levels”
Claim · model-written summary
A trade-off between NUE parameters of ragweed is attributed to differential response of NP and MRT to soil fertility and water supply.
Verbatim
e1“Ragweed plants increased their dry matter production with increased water and N availability”
e5“A trade-off between parameters of NUE was attributed to differential response of NP and MRT to soil fertility and water supply”
Claim · model-written summary
Ragweed displayed high adaptation to unproductive sites.
Verbatim
e6“Our results confirmed that ragweed displayed high adaptation to unproductive sites”
Claim · model-written summary
Ragweed shows greater plasticity in response to water availability than to N availability.
Verbatim
e7“ragweed’s greater plasticity in response to water availability compared to N availability”
Claim · model-written summary
Water supply may play an important role in the invasion success of ragweed (hypothesis).
Verbatim
e6“Our results confirmed that ragweed displayed high adaptation to unproductive sites”
e7“water supply plays important role in its invasion success”