Ozone exposure-response relationships for mixtures of perennial ryegrass and white clover depend on ozone exposure patterns

Nussbaum, S.; Geissmann, M.; Fuhrer, Jürg

doi:10.1016/1352-2310(94)00368-u

Cited by 61 publications

(37 citation statements)

References 17 publications

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“…Previous studies have showed that the negative effects of longterm higher O 3 exposure on crops were caused by the cumulative effects of O 3 (Nussbaum et al, 1995;Fuhrer et al, 1997). In this study, the cumulative effects of O 3 on the grains of winter wheat and rice were significantly exhibited at the end of the long-term higher O 3 exposure when the crops were harvested, and the yield, nutrient elements concentrations and quality of grain were all influenced.…”

Section: Discussionmentioning

confidence: 53%

Effects of elevated O3 exposure on nutrient elements and quality of winter wheat and rice grain in Yangtze River Delta, China

Zheng

Wang

Zhang

et al. 2013

Environmental Pollution

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a b s t r a c tWith the open-top chambers (OTCs) in situ in Yangtze River Delta, China in 2007 and 2008, the effects of elevated O 3 exposure on nutrient elements and quality of winter wheat and rice grain were investigated. Grain yield per plant of winter wheat and rice declined in both years. The N and S concentrations increased under elevated O 3 exposure in both years and CeN ratios decreased significantly. The concentrations of K, Ca, Mg, P, Mn, Cu and Zn in winter wheat and the concentrations of Mg, K, Mn and Cu in rice increased. The concentrations of protein, amino acid and lysine in winter wheat and rice increased and the concentration of amylose decreased. The increase in the nutrient concentration was less than the reduction of grain yield in both winter wheat and rice, and, hence, the absolute amount of the nutrients was reduced by elevated O 3 .

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Section: Discussionmentioning

confidence: 53%

Effects of elevated O3 exposure on nutrient elements and quality of winter wheat and rice grain in Yangtze River Delta, China

Zheng

Wang

Zhang

et al. 2013

Environmental Pollution

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“…Reductions in the legume fraction, but not the grass fraction, of harvested biomass as a result of ozone exposure have been demonstrated using both intact managed pasture (Fuhrer, 1994, Trifolium repens -Lolium perenne mixtures established in field conditions from seed (Wilbourn et al, 1995), and T. repens -L. perenne established in mesocosms (Hayes et al, 2009). Similarly, reductions in the clover:grass ratio due to ozone have been reported by Nussbaum et al (1995) and Heagle et al (1989) using T. repens and L. perenne and T. repens and Festuca arundinacea respectively, which can also occur if the above-ground biomass of the grass component increases due to reduced competition from the legume content. Reductions in N-fixation in clover in response to increasing ozone concentrations have also been shown (Hewitt et al, 2014), implying a reduced nitrogen content of the clover component of the pasture.…”

Section: Introductionmentioning

confidence: 71%

Consistent ozone-induced decreases in pasture forage quality across several grassland types and consequences for UK lamb production

Hayes

Mills

Jones

et al. 2016

Science of The Total Environment

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“…Although there are differences in O 3 sensitivity among crops, there are a considerable number of crops sensitive to elevated O 3 concentrations and subject to yield loss. The effects of elevated O 3 concentrations on crop growth and yield are assessed generally by a cumulative exposure over a threshold concentration for a given length of time (Nussbaum et al, 1995;Fuhrer et al, 1997). The index AOT40 (accumulated exposure over a threshold ozone concentration of 40 ppb) (USEPA, 1996) was widely adopted in Europe to assess the effects of O 3 .…”

Section: Introductionmentioning

confidence: 99%

Effects of elevated O3 concentration on winter wheat and rice yields in the Yangtze River Delta, China

Wang

Zhang

Zheng

et al. 2012

Environmental Pollution

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a b s t r a c tThe effects of a continuing rise of ambient ozone on crop yield will seriously threaten food security in China. In the Yangtze River Delta, a rapidly developing and seriously air polluted region in China, innovative open-top chambers have been established to fumigate winter wheat and rice in situ with elevated O 3 . Five years of study have shown that the yields of wheat and rice decreased with increasing O 3 concentration. There were significant relationships between the relative yield and AOT40 (accumulated hourly O 3 concentration over 40 ppb) for both winter wheat and rice. Winter wheat was more sensitive to O 3 than rice. O 3 -induced yield declines were attributed primarily to 1000-grain weight and harvest index for winter wheat, and attributed primarily to grain number per panicle and harvest index for rice. Control of ambient O 3 pollution and breeding of O 3 tolerant crops are urgent to guarantee food security in China.

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Ozone exposure-response relationships for mixtures of perennial ryegrass and white clover depend on ozone exposure patterns

Cited by 61 publications

References 17 publications

Effects of elevated O3 exposure on nutrient elements and quality of winter wheat and rice grain in Yangtze River Delta, China

Effects of elevated O3 exposure on nutrient elements and quality of winter wheat and rice grain in Yangtze River Delta, China

Consistent ozone-induced decreases in pasture forage quality across several grassland types and consequences for UK lamb production

Effects of elevated O3 concentration on winter wheat and rice yields in the Yangtze River Delta, China

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