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Combined effect of diuron and simazine on photosystem II photochemistry in a sandy soil and soil amended with solid olive-mill waste

AuthorsRedondo Gómez, S.; Cox, L. ; Cornejo, J. ; Figueroa, Manuel E.
Issue Date2007
PublisherTaylor & Francis
CitationJournal of Environmental Science and Health - Part B 42(3): 249-254 (2007)
AbstractDiuron (3-(3,4-dichlorophenyl)- = 1,1-dimethylurea) and simazine (6-chloro-N2, N4-diethyl-1,3,5-triazine-2,4-diamine) are soil-applied herbicides used in olive crops. The objective of this study is to investigate the effect of these herbicides on Photosystem II photochemistry of Olea europaea L., and whether the amendment of soil with an organic waste (OW) from olive oil production industry modifies this effect. For this purpose, herbicide soil adsorption studies, with unamended and OW-amended soil, and chlorophyll fluorescence measurements in adult olive leaves, after one, two and three weeks of soil herbicide treatment and/or OW amendment, were performed. Soil application of these herbicides reduced the efficiency of Photosystem II photochemistry of olive trees due to chronic photoinhibition, and this effect is counterbalanced by the addition of OW to the soil. OW reduces herbicide uptake by the plant due to an increase in herbicide adsorption.
Identifiersdoi: 10.1080/03601230701229122
issn: 0360-1234
e-issn: 1532-4109
Appears in Collections:(IRNAS) Artículos
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