Reduced ozone by air filtration consistently improved grain yield in wheat
(2011) In Environmental Pollution 159(4). p.897-902- Abstract
- This study considered effects of reduced [O-3] on wheat yield. Open-top chamber charcoal filtered air treatments were compared with non-filtered treatments for field-grown wheat. 30 experiments meeting requirements were found, representing nine countries in North America, Europe and Asia. 26 experiments reported improved yield and 4 experiments reduced yield by filtration, a significant positive effect. Average yield improvement was 9%. Average daytime [O-3] was reduced by filtration from 35 to 13 nmol mol(-1). Filtration efficiency was 63% for O-3 and 56% for SO2. For NOx it was observed that NO2 was reduced and NO increased by filtration. Thus, filters convert NO2 to NO. Most experiments reported low or very low [SO2] and [NOx]. Thus,... (More)
- This study considered effects of reduced [O-3] on wheat yield. Open-top chamber charcoal filtered air treatments were compared with non-filtered treatments for field-grown wheat. 30 experiments meeting requirements were found, representing nine countries in North America, Europe and Asia. 26 experiments reported improved yield and 4 experiments reduced yield by filtration, a significant positive effect. Average yield improvement was 9%. Average daytime [O-3] was reduced by filtration from 35 to 13 nmol mol(-1). Filtration efficiency was 63% for O-3 and 56% for SO2. For NOx it was observed that NO2 was reduced and NO increased by filtration. Thus, filters convert NO2 to NO. Most experiments reported low or very low [SO2] and [NOx]. Thus, O-3 can be concluded to be the main phytotoxic component in the experiments. Elevated [NO2] was observed in one experiment. The conclusion is that current [O-3] over large parts of the world adversely affect wheat yield. (C) 2010 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4448667
- author
- Pleijel, Håkan LU
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Charcoal filter, Grain mass, Nitrogen dioxide, Nitric oxide, Ozone, Sulphur dioxide, Wheat, Yield
- in
- Environmental Pollution
- volume
- 159
- issue
- 4
- pages
- 897 - 902
- publisher
- Elsevier
- external identifiers
-
- scopus:79951509554
- pmid:21255889
- ISSN
- 0269-7491
- DOI
- 10.1016/j.envpol.2010.12.020
- language
- English
- LU publication?
- no
- id
- 59c18fda-d9ca-4d57-b5e4-bdb969aeaaca (old id 4448667)
- date added to LUP
- 2016-04-01 14:39:39
- date last changed
- 2022-01-28 01:52:31
@article{59c18fda-d9ca-4d57-b5e4-bdb969aeaaca, abstract = {{This study considered effects of reduced [O-3] on wheat yield. Open-top chamber charcoal filtered air treatments were compared with non-filtered treatments for field-grown wheat. 30 experiments meeting requirements were found, representing nine countries in North America, Europe and Asia. 26 experiments reported improved yield and 4 experiments reduced yield by filtration, a significant positive effect. Average yield improvement was 9%. Average daytime [O-3] was reduced by filtration from 35 to 13 nmol mol(-1). Filtration efficiency was 63% for O-3 and 56% for SO2. For NOx it was observed that NO2 was reduced and NO increased by filtration. Thus, filters convert NO2 to NO. Most experiments reported low or very low [SO2] and [NOx]. Thus, O-3 can be concluded to be the main phytotoxic component in the experiments. Elevated [NO2] was observed in one experiment. The conclusion is that current [O-3] over large parts of the world adversely affect wheat yield. (C) 2010 Elsevier Ltd. All rights reserved.}}, author = {{Pleijel, Håkan}}, issn = {{0269-7491}}, keywords = {{Charcoal filter; Grain mass; Nitrogen dioxide; Nitric oxide; Ozone; Sulphur dioxide; Wheat; Yield}}, language = {{eng}}, number = {{4}}, pages = {{897--902}}, publisher = {{Elsevier}}, series = {{Environmental Pollution}}, title = {{Reduced ozone by air filtration consistently improved grain yield in wheat}}, url = {{http://dx.doi.org/10.1016/j.envpol.2010.12.020}}, doi = {{10.1016/j.envpol.2010.12.020}}, volume = {{159}}, year = {{2011}}, }