Water and nitrogen use efficiency of common ragweed (Ambrosia artemisiifolia L.) at different nitrogen and water levels

Authors

  • Robert LESKOVŠEK Agricultural Institute of Slovenia, Hacquetova ulica 17, 1000 Ljubljana, Slovenia
  • Klemen ELER University of Ljubljana, Biotechnical Faculty, Agronomy Department, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
  • Franc BATIČ University of Ljubljana, Biotechnical Faculty, Agronomy Department, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
  • Andrej SIMONČIČ Agricultural Institute of Slovenia, Hacquetova ulica 17, 1000 Ljubljana, Slovenia

DOI:

https://doi.org/10.14720/aas.2012.99.1.14518

Keywords:

Ambrosia artemisifolia, invasivity, water use efficiency, nitrogen use efficiency, pot experiment, Slovenia

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.

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Published

3. 05. 2012

Issue

Section

Original Scientific Article

How to Cite

LESKOVŠEK, R., ELER, K., BATIČ, F., & SIMONČIČ, A. (2012). Water and nitrogen use efficiency of common ragweed (Ambrosia artemisiifolia L.) at different nitrogen and water levels. Acta Agriculturae Slovenica, 99(1), 41–47. https://doi.org/10.14720/aas.2012.99.1.14518

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