Influence of sewage sludge application on crop yields and heavy metal availability
Open Access
- 1 June 1991
- journal article
- research article
- Published by Taylor & Francis Ltd in Soil Science and Plant Nutrition
- Vol. 37 (2), 201-210
- https://doi.org/10.1080/00380768.1991.10415030
Abstract
A calcareous soil with a low content of organic matter was treated with aerobic or anaerobic sewage sludge. In the same way, chicken manure was used for comparison. Influences on crop yields and the supply of macronutrients and heavy metals to soil and plant tissues were studied. In the soil amended with the sludges the total N and extractable N and P contents increased, whereas the extractable K level remained nearly constant. Samples which had undergone a period of humification prior to sowing, mineralized part of their organic N and P during this period of time. Through sludge application, the levels of Cu, Zn, and Pb increased, the Fe content decreased while the extractability of Fe, Cu, Mn, Zn, and Pb increased as compared to the control. Sludge application enhanced the maize and barley yields as is the case of chicken manure. Sewage sludges supplied a considerable amount of available N to the plants, whereas the supply.of available K was low. In the barley plants it was observed that the higher the yield, the higher the N and K contents, while in the maize crop this trend was only observed for K. Plants grown on soil amended with sludges absorbed a larger amount of Fe, Cu, and Zn than those grown on the control soil. It was demonstrated that heavy metal absorption by the plants depended on the vegetal species.Keywords
This publication has 6 references indexed in Scilit:
- Effect of sewage irrigation on yield, tree components and heavy metals accumulation in navel orange treesBiological Wastes, 1988
- Extractability and bioavailability of zinic, nickle, cadmium and copper in three Danish soils sampled 5 years after application of sewage sludgeJournal of the Science of Food and Agriculture, 1986
- A method for determining the cation-exchange capacity of organic materialsPlant and Soil, 1986
- Development of a DTPA Soil Test for Zinc, Iron, Manganese, and CopperSoil Science Society of America Journal, 1978
- Growth and Metal Uptake of Snap Beans Grown on Sewage Sludge‐Amended Soil: A Four‐Year Field StudyJournal of Environmental Quality, 1978
- Chemical Composition of Sewage Sludges and Analysis of Their Potential Use as FertilizersJournal of Environmental Quality, 1977