Competition between Ambrosia artemisiifolia and Ambrosia trifida: Is there a threat of a stronger competitor?
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2021
Authors
Savić, Aleksandra
Oveisi, Mostafa
Božić, Dragana

Pavlović, Danijela

Saulić, Markola
Scharer Muller, Heinz
Vrbničanin, Sava

Article (Published version)

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Recent reports of the presence of Ambrosia trifida (AT) in areas infested by A. artemisiifolia (AA) in Serbia warn of the impending establishment of a more damaging crop weed. Here, we test the potential competitive effects of these two weed species. We conducted a field competition study in 2016 and 2017 as a replacement series experiment arranged in a split plot, with main plots (20.5 m × 2 m) at total plant densities of 10 and 100 plants/m2, and sub-plots (3 m × 2 m) at the proportion of AT to AA of 100:0, 80:20, 60:40, 40:60, 20:80 and 0:100. Individual plant biomass (IPB) for AT was lowest when grown in monoculture, while AA reached its highest IPB in its monoculture. With AT < 40%, the AT IPB was larger than (2017) or the same as AA (2016). With AT > 40%, its IPB decreased due to increased intraspecific competition. We obtained the lowest sub-plot biomass (SPB) of AT + AA in mixtures with 40:60 and 60:40 ratios, and also the highest SPB of other weed species. We show that despite... a larger leaf area, AT may not fully replace AA and thus not become a new threat to crops, as it not only suffers from intraspecific competition at high densities, but also from interspecific competition with AA. Therefore, crops may benefit from a stable coexistence of both species as compared to highly dominant AT or AA. Further studies in the presence of crops are needed to confirm this hypothesis.
Keywords:
interspecific competition / intraspecific competition / multispecies competition / plant density ratio / plant invasionSource:
Weed Research, 2021, 61, 4, 298-306Publisher:
- Blackwell Publishing Ltd
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200010 (Institute for Plant Protection and Environment, Belgrade) (RS-200010)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200116 (University of Belgrade, Faculty of Agriculture) (RS-200116)
DOI: 10.1111/wre.12479
ISSN: 0043-1737
WoS: 000655450600001
Scopus: 2-s2.0-85105792094
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Poljoprivredni fakultetTY - JOUR AU - Savić, Aleksandra AU - Oveisi, Mostafa AU - Božić, Dragana AU - Pavlović, Danijela AU - Saulić, Markola AU - Scharer Muller, Heinz AU - Vrbničanin, Sava PY - 2021 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/5857 AB - Recent reports of the presence of Ambrosia trifida (AT) in areas infested by A. artemisiifolia (AA) in Serbia warn of the impending establishment of a more damaging crop weed. Here, we test the potential competitive effects of these two weed species. We conducted a field competition study in 2016 and 2017 as a replacement series experiment arranged in a split plot, with main plots (20.5 m × 2 m) at total plant densities of 10 and 100 plants/m2, and sub-plots (3 m × 2 m) at the proportion of AT to AA of 100:0, 80:20, 60:40, 40:60, 20:80 and 0:100. Individual plant biomass (IPB) for AT was lowest when grown in monoculture, while AA reached its highest IPB in its monoculture. With AT < 40%, the AT IPB was larger than (2017) or the same as AA (2016). With AT > 40%, its IPB decreased due to increased intraspecific competition. We obtained the lowest sub-plot biomass (SPB) of AT + AA in mixtures with 40:60 and 60:40 ratios, and also the highest SPB of other weed species. We show that despite a larger leaf area, AT may not fully replace AA and thus not become a new threat to crops, as it not only suffers from intraspecific competition at high densities, but also from interspecific competition with AA. Therefore, crops may benefit from a stable coexistence of both species as compared to highly dominant AT or AA. Further studies in the presence of crops are needed to confirm this hypothesis. PB - Blackwell Publishing Ltd T2 - Weed Research T1 - Competition between Ambrosia artemisiifolia and Ambrosia trifida: Is there a threat of a stronger competitor? EP - 306 IS - 4 SP - 298 VL - 61 DO - 10.1111/wre.12479 ER -
@article{ author = "Savić, Aleksandra and Oveisi, Mostafa and Božić, Dragana and Pavlović, Danijela and Saulić, Markola and Scharer Muller, Heinz and Vrbničanin, Sava", year = "2021", abstract = "Recent reports of the presence of Ambrosia trifida (AT) in areas infested by A. artemisiifolia (AA) in Serbia warn of the impending establishment of a more damaging crop weed. Here, we test the potential competitive effects of these two weed species. We conducted a field competition study in 2016 and 2017 as a replacement series experiment arranged in a split plot, with main plots (20.5 m × 2 m) at total plant densities of 10 and 100 plants/m2, and sub-plots (3 m × 2 m) at the proportion of AT to AA of 100:0, 80:20, 60:40, 40:60, 20:80 and 0:100. Individual plant biomass (IPB) for AT was lowest when grown in monoculture, while AA reached its highest IPB in its monoculture. With AT < 40%, the AT IPB was larger than (2017) or the same as AA (2016). With AT > 40%, its IPB decreased due to increased intraspecific competition. We obtained the lowest sub-plot biomass (SPB) of AT + AA in mixtures with 40:60 and 60:40 ratios, and also the highest SPB of other weed species. We show that despite a larger leaf area, AT may not fully replace AA and thus not become a new threat to crops, as it not only suffers from intraspecific competition at high densities, but also from interspecific competition with AA. Therefore, crops may benefit from a stable coexistence of both species as compared to highly dominant AT or AA. Further studies in the presence of crops are needed to confirm this hypothesis.", publisher = "Blackwell Publishing Ltd", journal = "Weed Research", title = "Competition between Ambrosia artemisiifolia and Ambrosia trifida: Is there a threat of a stronger competitor?", pages = "306-298", number = "4", volume = "61", doi = "10.1111/wre.12479" }
Savić, A., Oveisi, M., Božić, D., Pavlović, D., Saulić, M., Scharer Muller, H.,& Vrbničanin, S.. (2021). Competition between Ambrosia artemisiifolia and Ambrosia trifida: Is there a threat of a stronger competitor?. in Weed Research Blackwell Publishing Ltd., 61(4), 298-306. https://doi.org/10.1111/wre.12479
Savić A, Oveisi M, Božić D, Pavlović D, Saulić M, Scharer Muller H, Vrbničanin S. Competition between Ambrosia artemisiifolia and Ambrosia trifida: Is there a threat of a stronger competitor?. in Weed Research. 2021;61(4):298-306. doi:10.1111/wre.12479 .
Savić, Aleksandra, Oveisi, Mostafa, Božić, Dragana, Pavlović, Danijela, Saulić, Markola, Scharer Muller, Heinz, Vrbničanin, Sava, "Competition between Ambrosia artemisiifolia and Ambrosia trifida: Is there a threat of a stronger competitor?" in Weed Research, 61, no. 4 (2021):298-306, https://doi.org/10.1111/wre.12479 . .