The effect of sewage sludge composts and potato pulp on uptaking of macroelements by the grain and straw of the spring triticale

Abstract

Taking into consideration the acid pH soil, high content of potassium in relation to nitrogen and phosphorus and the insignificant quantity of heavy metals in the potato pulp and the slight alkaline pH soil as well, high amount of nitrogen and phosphorus in relation to potassium in the municipal sewage sludge, the experiment was carried out in order to define the effect of composts from these waste on uptaking macroelements by the grain and the straw of the Wanad variety spring triticale. The vegetative -pot experiment was carried out on the brown incomplete soil of the slight acid pH (pH KCl 6,1), of the granulometric composition of slight loam (V complex), an average content of available forms of phosphorus and potassium and a high content of magnesium. The obtained results show that the grain and the straw of spring trticale took distinctly more macroelements under the influence the fertilization of the composts with the municipal sewage sludge (30%) and the potato pulp (30%) in comparison with the composts with the 60% participation of the potato pulp. The supplementary mineral fertilization which was used against in comparison to composts, increased uptaking the macroelements by the tested plant. The double dose of composts and mineral fertilizers visibly increased nitrogen, phosphorus, potassium, cooper, magnesium and sulphur absorbance by the grain and the straw of spring trticale in comparison with the series with a single dose of composts and a supplementary mineral fertilization.

Microbiological assessment of sewage sludge hygienization in the process of composting with the use of Salmonella Enteritidis

“…Wolna-Maruwka and Pilarski [11] obtained results similar to those achieved by the authors. The contents of dry matter and pH obtained in the authors' own experiment were typical for a normal process of sewage sludge composting [23]. In conclusion, it needs to be said that the process of composting has a destructive impact on pathogenic microorganisms inhabiting in sewage sludge.…”

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

“…2, composed of municipal sewage sludge (50%), iron (II) sulphate (VI) heptahydrate (30%), urea (10%) and potassium salt (10%), and next by the granular fertiliser No. 4 These data show that higher crop yields are obtained with a higher percentage of municipal sewage sludge (50%) in the composition of granular fertilisers. The obtained results fi nd their confi rmation in the studies by many authors who observed that municipal sewage sludge and composts produced with it affected an increase in the crop yields as well as improved their qualitative traits…”

“…The granular fertilisers containing CaSO 4 • 2H 2 O increased signifi cantly the P, Ca and S contents in the test plants when compared to those containing FeSO 4 • 7H 2 O.…”

“…Data given in g • kg -1 D.M. 4 • 7H 2 O, these differences were proved to be statistically non-signifi cant.…”

“…Signifi cantly higher yields of the test plants were obtained as affected by granular fertilisers with FeSO 4 • 7H 2 O in their composition when compared to calcium sulphate(VI) dihydrate.…”