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Closed Access item Terbuthylazine persistence in an organic amended soil

Authors:Cabrera Mesa, Alegría
Cox, L.
Velarde Muñoz, Pilar
Cornejo, J.
Issue Date:2008
Publisher:Taylor & Francis
Citation:Journal of Environmental Science and Health - Part B 43(8): 713- 716 (2008)
Abstract:The aim of this work was to study the effect of the application of a solid waste from olive oil production (alperujo) on the movement and persistence of the herbicide terbuthylazine (N2-tert-butyl-6-chloro-N4-ethyl-1,3,5-triazine-2, 4-diamine). An experimental olive grove was divided in two plots: (i) Plot without organic amendment (blank) and (ii) Plot treated with alperujo during 3 years at a rate of 17920 kg of alperujo ha- 1. Terbuthylazine was applied to both plots at a rate of 2 kg ha- 1 a.i. Triplicates from each plot were sampled at 3 depths (0-10, 10-20 and 20-30 cm), air-dried, remains of olive leaves, grass roots, and stones removed and sieved through a 5 mm mesh sieve. Terbuthylazine was extracted with methanol 1:2 weight:volume ratio, the extracts were evaporated to dryness, resuspended in 2 mL of methanol, filtered and anylized by high performance liquid chromatography (HPLC). Higher amounts of terbuthylazine were detected at each sampling depth in plots treated with alperujo. The increase in soil organic matter content upon amendment with alperujo slightly increased sorption, suggesting that other factors beside sorption affect terbuthylazine degradation rate in organic amended soils.
URI:http://hdl.handle.net/10261/60488
Identifiers:doi: 10.1080/03601230802388835
issn: 0360-1234
e-issn: 1532-4109
Appears in Collections:(IRNAS) Artículos

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