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SEWAGE SLUDGE: SOIL CONDITIONER AND NUTRIENT SOURCE: II. AVAILABILITY OF CU, ZN, PB AND CD TO BARLEY IN A POT EXPERIMENTстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Otabbong E., Nilsson I., Persson J., Sadovnikova L., Iakimenko O.
- Журнал: Acta Agriculturae Scandinavica - Section B Soil and Plant Science
- Том: 47
- Номер: 2
- Год издания: 1997
- Издательство: Taylor & Francis
- Местоположение издательства: United Kingdom
- Первая страница: 65
- Последняя страница: 70
- DOI: 10.1080/09064719709362442
- Аннотация: The effects of sewage sludge (SS) application on NH4NO3-extractable Cu, Zn, Pb and Cd as well as metal uptake by barley (Hordeum vulgare L.) were investigated using a sandy loam soil (pH in water = 6.7). Treatments comprised three replicates each and were as follows: untreated soil (control), two that received a Russian (SSR) and two that received a Swedish SS (SSS). The SS application based on N applied at rates of 100 (SSR1 and SSS1) and 300 (SSR3 and SSS3) mg N kg- 1 dry soil, respectively. Soil metal levels determined immediately after mixing the soils with SS were markedly increased. However, cropping the soils strongly decreased their Cu, Zn and Pb levels, while leaving substantial amounts of residual Cd in the soils, regardless of the treatment. Metal uptake in shoots and roots was significantly (P = 0.05) enhanced by SS applications. Rates of metal uptake in roots were significantly (P = 0.05, n = 64) correlated with the pre-cropping soil metal contents. The bulk of the metals absorbed by the plants remained in roots. On average, transport index defined as the percentage of total metal uptake (shoots + roots) that was translocated to the shoots, was about 40, 50, 30 and 20% for Cu, Zn, Pb and Cd, respectively. Cd uptake was highest in SSR3, while Cu and Pb uptakes were highest in SSS3 These results suggest that the SS may not be "environmentally friendly".
- Добавил в систему: Якименко Ольга Сергеевна