Assessing effects of ambient ozone on crops in the Netherlands with ethylenediurea (EDU): Spatial and temporal variation
| Autor: | A.E.G. Tonneijck, C.J. van Dijk |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Trifolium subterraneum
Ozone fungi Air pollution food and beverages Growing season Biology biology.organism_classification medicine.disease_cause PRI Agrosysteemkunde chemistry.chemical_compound Ethylene diurea Point of delivery Agronomy chemistry medicine Life Science Phytotoxicity Agrosystems Phaseolus |
| Zdroj: | Air pollution in the 21st century. Priority issues and policy. Amsterdam: Elsevier Air pollution in the 21st century. Priority issues and policy |
| Popis: | As part of UN/ECE ICP-Crops program, plants of clover (Trifolium subterraneum cv. Geraldton) and bean (Phaseolus vulgaris cv. Lit) were exposed to ambient air at four rural sites in the growing seasons of 1994 through 1996. The influence of ozone on visible injury, growth and yield was determined by comparing the response of plants treated with ethylene diurea (EDU) to that of untreated plants. EDU is an antioxidant that protects plants from ozone damage. A considerable degree of ozone-induced injury in both crop species has been observed at all sites. Although injury in each species varied between years and sites, the site-dependent pattern was similar for each year. Adverse effects of ozone on pod yield in bean were observed each year but did not vary between sites. Plant responses were not related to the measured ozone levels (AOT40) and environmental factors such as VPD seem to have a strong influence on the ozone sensitivity of plants in terms of foliar injury. Evidence suggests that the short-term critical level to protect plants against ozone injury should be lower than those that have been proposed recently. |
| Databáze: | OpenAIRE |
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