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Effect of granular fertilisers produced from industrial and municipal wastes on the crop yield and their content of macroelements

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Krzywy E., Możdżer E., Bakenowa Ż.
Polish Journal of Chemical Technology
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2015
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vol. 17
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issue 2
11-16
EN
Four granular fertilisers were produced from industrial waste products, such as CaSO4 ∙ 2H2O and FeSO4 ∙ 7H2O, coniferous and deciduous sawdust mixture and municipal sewage sludge with addition of mineral fertilisers. Based on the content of organic matter, nitrogen, phosphorus and potassium and heavy metals, these granular fertilisers can be included into the group of organic-mineral fertilisers. In order to determine their manurial value, a vegetation experiment was carried out with these granular fertilisers in which spring rape and spring triticale were the test plants. The study results show that granular fertilisers increased signifi cantly the yields of test plants and their content of macroelements. The granular fertilisers containing FeSO4 ∙ 7H2O increased signifi cantly the yields of test plants and the contents of macroelements when compared to those with CaSO4 ∙ 2H2O. As affected by the granular fertilisers containing CaSO4 ∙ 2H2O, there was more phosphorus, calcium and sulphur in the test plants. The granular fertilisers composed of the waste products mentioned above can be a cheap source of organic matter and nutrients for plants and may reduce possibility of environmental contamination.
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Assessment of the use of municipal and industrial wastes in agriculture

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Jasiewicz C., Antonkiewicz J., Baran A.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 3
15-19
EN
Agricultural usability of urban and industrial wastes was investigated in 2004 - 2006 in a pot experiment carried out in the vegetation hall. In the first year of the experiment maize was the test plant, oat grass in the second and oat in the third. The experimental design comprised 11 treatments differing with fertilizer and the kind of the supplied fertilizer components. The experiment used: mineral salts, farmyard manure, compost, municipal sewage sludge and industrial sewage sludge in two fertilizer doses. Metal concentrations in the test plants were diminishing in the following direction: oat grass < maize < oat. The lowest concentrations of the analyzed heavy metals were assessed in the plants fertilized with farmyard manure and compost (Zn, Cu). Among the tested plants the highest quantities of Zn, Cu, Ni, Pb and Cd were removed with the yield of the oat grass, then maize and oat. The highest uptake of Zn, Cu, Ni and Pb by plants was registered on a double dose of industrial sludge and Cd on a single dose of municipal sludge.
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