High carbon dioxide concentration and elevated temperature impact the growth of weeds but do not change the efficacy of glyphosate

Jabran, Khawar; Doğan, Mehmet Nedim

doi:10.1002/ps.4788

Cited by 25 publications

(16 citation statements)

References 39 publications

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“…However, there was no significant effect on the efficacy of the herbicides, halosulfuron and glyphosate or their tank mix at the elevated CO 2 condition . Similar results were reported for glyphosate efficacy against four different weed species by Jabran and Doğan. There has been little explanation in literature to describe no effect of elevated CO 2 concentration on the herbicide efficacy despite of a positive effect on weeds' biology.…”

Section: Discussionsupporting

confidence: 73%

“…Previous studies evaluating the efficacy of herbicides (mainly glyphosate) against different weeds at elevated CO 2 have reported mixed results. Some studies have reported no significant effect of elevated CO 2 on glyphosate efficacy against different weeds . For instance, Marble et al reported significant growth improvement in Cyperus rotundus L. and Cyperus esculentus L. at an elevated CO 2 concentration (600 ppm) when compared to the ambient CO 2 concentration (400 ppm).…”

Section: Discussionmentioning

confidence: 99%

“…In C 3 weed species, an increased photosynthetic rate, rapid seedling growth and thicker leaves at elevated CO 2 concentrations were reported to be responsible for reduced herbicide uptake and translocation . However, other studies have also reported that the herbicide efficacy was not affected by elevated CO 2 despite the positive impact of CO 2 enrichment on weed growth . Only one study has reported that Eleusine indica (L.) Gaertn.…”

Section: Introductionmentioning

confidence: 99%

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Effect of elevated carbon dioxide concentration on growth, productivity and glyphosate response of parthenium weed (Parthenium hysterophorus L.)

Bajwa

Wang

Chauhan

et al. 2019

Pest Management Science

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BACKGROUND: The rise in atmospheric CO 2 has huge impacts on the biology and management of invasive weed species such as Parthenium hysterophorus. This study evaluated the effect of ambient (400 ppm) and elevated (700 ppm) CO 2 concentrations on P. hysterophorus growth, reproductive output and response to glyphosate applied at several doses including the recommended dose (800 g a.e. ha −1 ). RESULTS: The plants in control treatment (no herbicide) grew taller (41%), produced a larger number of leaves (13%) and flowers (39%), and higher dry biomass (34%) at elevated CO 2 as compared to the ambient CO 2 . Glyphosate caused significant reduction in chlorophyll content of P. hysterophorus plants grown at both CO 2 concentrations in a dose-dependent manner. The percentage herbicide injury was relatively less at elevated CO 2 as compared to the ambient CO 2 at 7 and 14 days after glyphosate application but it was almost similar at 21 days after application. This shows that elevated CO 2 might have slowed the translocation of glyphosate initially, but most plants were killed eventually close to 21 days after application. The survival rate was higher under elevated as compared to the ambient CO 2 at recommended and lower doses of glyphosate. There was a negligible difference between the two CO 2 concentrations for the plant dry biomass reduction over the control treatment. CONCLUSIONS: P. hysterophorus growth and reproductive potential (indicated by number of flowers) improved significantly by CO 2 enrichment but there was little effect on the overall efficacy of glyphosate applied to control this species.

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Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of elevated carbon dioxide concentration on growth, productivity and glyphosate response of parthenium weed (Parthenium hysterophorus L.)

Bajwa

Wang

Chauhan

et al. 2019

Pest Management Science

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“…The present research suggests that S. cannabina grown in an elevated [CO 2 ] of 700 ppm will be taller, with more leaves, a high growth index, longer root length, greater fresh and dry biomass, and greater chlorophyll content when compared to plants grown in an ambient [CO 2 ] of 400 ppm (Figures 1-4). These findings acquiesce with others in predicting that an elevated [CO 2 ] of 700 ppm will have a significant positive effect on the growth and biomass production of S. cannabina [13,26]. In a previous study, Xanthium strumarium L., a C3 weed, when grown in an elevated [CO 2 ] environment presented a higher leaf area, leaf photosynthesis, and dry biomass [27].…”

Section: Effect Of Different [Co 2 ]supporting

confidence: 84%

Effect of Different Climate Change Variables on the Ecology and Management of Sesbania cannabina through Glyphosate

Iqbal

Manalil

Chauhan

et al. 2021

Plants

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An elevated atmospheric carbon dioxide (CO2) concentration and frequent droughts are two anticipated climate change scenarios in which certain invasive weeds may develop competitive advantages over crops and adversely impact productivity and herbicide efficacy. Hence, a study was conducted to explore the effect of different climatic scenarios on the growth and management of Sesbania cannabina (Retz.) Pers with glyphosate. The variables investigated were two CO2 concentrations (400 and 700 ppm), two soil moisture levels (100% and 50% of field capacity (FC)), and three glyphosate rates (0 (control), 517 (50% of recommended rate), and 1034 g ae ha−1 (recommended rate)). CO2 concentrations and soil moisture levels had different effects on the growth and management of S. cannabina. Overall, 100% FC and elevated [CO2] of 700 ppm recorded the maximum plant height (38 cm), leaves per plant (20), growth index (60), chlorophyll content (SPAD value 37), and dry biomass (3 g) in comparison with ambient [CO2] of 400 ppm and 50% FC treatment. The recommended glyphosate application gave 100% weed biomass reduction; however, efficacy was reduced (63%) when applied at 50% of the recommended rate under elevated [CO2] of 700 ppm and 50% FC conditions.

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“…Previous studies have also demonstrated that global warming can affect the growth, phenology, and geographical distribution of weeds . Our study found that there was no difference in weed density between warming and control plots, though the number of weeds in year two was significantly higher than in year one.…”

Section: Discussionsupporting

confidence: 49%

Elevated temperature reduces wheat grain yield by increasing pests and decreasing soil mutualists

Tian

Pei

et al. 2018

Pest Management Science

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High carbon dioxide concentration and elevated temperature impact the growth of weeds but do not change the efficacy of glyphosate

Abstract: The positive effect of high CO concentration on the growth of weeds does not impact the activity of glyphosate. © 2017 Society of Chemical Industry.

Cited by 25 publications

References 39 publications

Effect of elevated carbon dioxide concentration on growth, productivity and glyphosate response of parthenium weed (Parthenium hysterophorus L.)

Effect of elevated carbon dioxide concentration on growth, productivity and glyphosate response of parthenium weed (Parthenium hysterophorus L.)

Effect of Different Climate Change Variables on the Ecology and Management of Sesbania cannabina through Glyphosate

Elevated temperature reduces wheat grain yield by increasing pests and decreasing soil mutualists

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