Elevated Atmospheric Carbon Dioxide and Weed Populations in Glyphosate Treated Soybean

Ziska, Lewis H.; Goins, Ernie W

doi:10.2135/cropsci2005.10-0378

Cited by 52 publications

(42 citation statements)

References 15 publications

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“…At the whole plant level, changes in allometry and phenology can influence time to flowering, flower number and pollen production (Ziska and Bunce 2006). At the level of community, plant competition may be altered with a resultant change in species number or species diversity (Ziska and Goins 2006). Overall, these changes could alter invasive insect-host interactions by either altering the insects feeding behavior or by altering plant defenses.…”

Section: Invasive Insectsmentioning

confidence: 99%

“…There are initial studies indicating a potential decline in chemical efficacy with rising [CO 2 ] and/or temperature for some weeds (Ziska and Goins 2006;Archambault 2007). For example, there are data for two invasive agricultural weeds, Canada thistle and quackgrass (Elytrigia repens), demonstrating that elevated levels of carbon dioxide can reduce herbicide efficacy (Ziska and Teasdale 2000;).…”

Section: Invasive Species Management: Preparing For the Futurementioning

confidence: 99%

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Invasive species and climate change: an agronomic perspective

et al. 2010

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In the current review we wish to draw attention to an additional aspect of invasive species and climate change, that of agricultural productivity and food security. We recognize that at present, such a review remains, in part, speculative, and more illustrative than definitive. However, recent events on the global stage, particularly in regard to the number of food riots that occurred during 2008, even at a time of record harvests, have prompted additional interest in those factors, including invasive species, which could, through climatic uncertainty, alter food production. To that end, as agricultural scientists, we wish to begin an initial evaluation of key questions related to food production and climate change including: how vulnerable is agriculture to invasive species?; are current pest management strategies sufficient to control invasive outbreaks in the future?; what are the knowledge gaps?; can we provide initial recommendations for scientists, land managers and policy makers in regard to available resources? Our overall goals are to begin a synthesis of potential impacts on productivity, to identify seminal research areas that can be addressed in

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Section: Invasive Insectsmentioning

confidence: 99%

Section: Invasive Species Management: Preparing For the Futurementioning

confidence: 99%

Invasive species and climate change: an agronomic perspective

et al. 2010

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“…Therefore it seems likely that any resource increase is likely to stimulate the growth of one or more weed species in a cropweed mix than the crop. Recent data for a soybean/weed system in fact, indicate C 3 annuals (e.g., lambsquarters, Chenopodium album) are favored by natural selection with prolonged exposure to increased CO 2 , leading to increased competition with soybean (Ziska and Goins 2006a). …”

Section: Weed Responses To Comentioning

confidence: 99%

“…Unfortunately, there are also an increasing number of studies (Ziska et al 1999(Ziska et al , 2004Ziska and Teasdale 2000;Ziska and Goins 2006a) that demonstrate a decline in chemical efficacy with rising CO 2 per se. Given the evidence from field and laboratory trials, it appears that declining efficacy of herbicides with increasing CO 2 is very likely to affect the environmental and economic cost of pesticide usage (Ziska et al 1999;Ziska and Teasdale 2000).…”

Section: Implications For Control and Managementmentioning

confidence: 99%

Projected change in climate thresholds in the Northeastern U.S.: implications for crops, pests, livestock, and farmers

Wolfe

Ziska

Petzoldt

et al. 2007

Mitig Adapt Strateg Glob Change

110

100

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Most prior climate change assessments for U.S. agriculture have focused on major world food crops such as wheat and maize. While useful from a national and global perspective, these results are not particularly relevant to the Northeastern U.S. agriculture economy, which is dominated by dairy milk production, and high-value horticultural crops such as apples (Malus domestica), grapes (Vitis vinifera), sweet corn (Zea mays var. rugosa), cabbage (Brassica oleracea var. capitata), and maple syrup (sugar maple, Acer saccharum). We used statistically downscaled climate projections generated by the HadCM3 atmosphere-ocean general circulation model, run with Intergovernmental Panel on Climate Change future emissions scenarios A1fi (higher) and B1 (lower), to evaluate several climate thresholds of direct relevance to agriculture in the region. A longer (frostfree) growing season could create new opportunities for farmers with enough capital to take risks on new crops (assuming a market for new crops can be developed). However, our results indicate that many crops will have yield losses associated with increased frequency of high temperature stress, inadequate winter chill period for optimum fruiting in spring, increased pressure from marginally over-wintering and/or invasive weeds, insects, or disease, or other factors. Weeds are likely to benefit more than cash crops from increasing atmospheric carbon dioxide. Projections of thermal heat index values for dairy cows Mitig Adapt Strat Glob Change (2008) indicate a substantial potential negative impact on milk production. At the higher compared to lower emissions scenario, negative climate change effects will occur sooner, and impact a larger geographic area within the region. Farmer adaptations to climate change will not be cost-or risk-free, and the impact on individual farm families and rural communities will depend on commodity produced, available capital, and timely, accurate climate projections.

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“…Hitherto studies concerned the effect of increased CO 2 on the growth and yields of some crops. In most studies it was concluded that yields of some crops such as maize, soybean, wheat and rice are increased in response to elevated CO 2 (Alberto et al, 1996;Ziska and Bunce 1997;Ziska and Goins 2006;Patel et al 2008;Erbs et al, 2009). Some other studies concerned however, the effects of CO 2 increase on the growth and competition ability of weeds and their results showed that weed growth can be improved by elevated CO 2 as well (Ziska and Bunce 1997;Ziska 2002;Pandey et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

INFLUENCE OF DIFFERENT CO2 LEVELS ON THE GROWTH AND COMPETITION OF SOME IMPORTANT WEEDS IN WHEAT (Triticum aestivum L.)

Meşe¹,

Doğan²

2015

AgricultForest

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SUMMARYPot experiments were conducted to investigate the effects of different CO 2 levels on the growth and competition of Avena sterilis, Phalaris minor, Galium tricornatum and Sinapis arvensis which are important weed species in wheat (Triticum aestivum) growing areas. Two CO 2 levels (500 ppm as ambient, 750-800 ppm as elevated) were used in the study. Weeds or wheat plants were sown to pots alone or in competition with each other. Six weeks after emergence above ground fresh and dry biomasses of all plants were determined and compared. Results showed that biomasses of all plants were significantly increased by elevated CO 2 when grown in monoculture. Under competition CO 2 showed no significant effect on weed biomasses. Weeds reduced wheat biomass at both CO 2 level but only significantly under elevated CO 2 . Wheat suppressed weeds also to higher degrees under elevated CO 2 levels. S. arvensis suppression by wheat was 50% at ambient but about 95% at elevated CO 2 conditions. These results show that elevated CO 2 improve the growth of weeds under noncompetitive conditions significantly. Although weed growth was not directly affected by elevated CO 2 under competitive conditions, they caused higher biomass reduction of wheat. However, the growth of wheat plants was so improved by elevated CO 2 , that they still produced as much biomass as of those grown without competition at ambient CO 2 . These results suggest that global CO 2 increase might cause increase in wheat growth, but weed control will still be important issue to maintain maximum yield.

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Elevated Atmospheric Carbon Dioxide and Weed Populations in Glyphosate Treated Soybean

Cited by 52 publications

References 15 publications

Invasive species and climate change: an agronomic perspective

Invasive species and climate change: an agronomic perspective

Projected change in climate thresholds in the Northeastern U.S.: implications for crops, pests, livestock, and farmers

INFLUENCE OF DIFFERENT CO2 LEVELS ON THE GROWTH AND COMPETITION OF SOME IMPORTANT WEEDS IN WHEAT (Triticum aestivum L.)

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