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Effect of combustion wastes and sewage sludge compost on the chemical properties of soil

Krzywy-Gawrońska E.

Polish Journal of Chemical Technology

2013

Vol. 15, nr 3

48-54

A field experiment was conducted univariate in 2008-2010 in the Variety Assessment Station in Szczecin - Dąbie. The soil on which the experience was based is made of light loamy sand (pgl). In terms of granulometric composition it includes it into the category of light soils, agricultural suitability complex IV b, good (5). The experiment included, inter alia, waste compost produced with municipal sewage sludge produced by *GWDA and ash from brown coal (waste grate). No normal ranges for heavy metals being specified in the ministerial regulations were used for environmental purposes, which are maximum 20, 500, 750, 300, 1000 and 16 mg per 1 kg dry matter for cadmium, chromium, lead, nickel, copper and mercury, respectively16 were exceeded in the sewage sludge being used to produce the compost. The field experiment design consisted of 6 fertilisation objects. A test plant was Virginia fanpetals (Sida hermaphodrita Rusby). The content of available phosphorus, potassium and magnesium in the soil, being fertilised with municipal SSC with and without an addition of high-calcium BCA, changed after three years. There was an increase in the content of available phosphorus, potassium and magnesium forms, on average by 8.5%, 16.0% and 9.0%, respectively. When analysing the chemical properties of soil before and after this study, it may be stated that respective systems of municipal sewage sludge compost and high-calcium brown coal ash application differently affected most soil richness indices. The best fertilisation effects were obtained in the system with municipal sewage sludge compost being applied at a dose corresponding to 250 kg N ∙ ha-1 as well as with high-calcium brown coal ash at a dose corresponding to 1.5 Mg CaO ∙ ha-1 being introduced into soil in the first year of study and at a dose corresponding to 0.75 Mg CaO ∙ ha-1 in successive years. Fertilisation with municipal sewage sludge compost without and with addition of high-calcium brown coal ash favourably affected the preservation of soil environment stability and improvement of soil chemical composition.

Odczyn i zasobność gleb łąkowych w Polsce

Pietrzak S.

Woda-Środowisko-Obszary Wiejskie

2012

T. 12, z. 1

105-117

W pracy przeprowadzono ocenę odczynu gleb łąkowych w Polsce oraz zawartości w nich przyswajalnych dla roślin form fosforu, potasu i magnezu. Ocenę dokonano na podstawie uzyskanych w 2008 r. wyników monitoringu jakości gleby na obszarach zajmowanych przez użytki zielone (UZ). Monitoring ten łącznie z monitoringiem wody jest realizowany przez Krajową Stację Chemiczno- Rolniczą w Warszawie i podlegające jej okręgowe stacje z udziałem ITP Falenty. Stwierdzono, że: duży odsetek gleb użytków zielonych jest silne zakwaszonych - 42% z nich ma odczyn bardzo kwaśny lub kwaśny; w glebach łąkowych występują znaczne niedobory przyswajalnych form fosforu i potasu - mała zawartość fosforu występuje w siedliskach użytków zielonych obejmujących 59% gleb mineralnych i prawie 50% gleb organicznych, a potasu - 73% gleb mineralnych i prawie 98% gleb organicznych; gleby mineralne UZ charakteryzują się względnie dobrym zaopatrzeniem w magnez, natomiast gleby organiczne stosunkowo słabym - w pierwszym przypadku zasobnych w ten składnik jest ok. 66% gleb, w drugim jedynie ok. 30%.

An assessment of pH and the content of plant available forms of phosphorus, potassium and magnesium in meadow soils of Poland is presented in this paper. The assessment was based on results of soil quality monitoring carried out in 2008 in areas occupied by grasslands. This monitoring together with water monitoring is realised by the National Chemical-Agricultural Station in Warsaw together with its regional branches and with participation of the Institute of Technology and Life Sciences in Falenty. A large percent of grassland soils was found to be strongly acidified - 42% of these soils are strongly acid or acid. Substantial deficits of available forms of phosphorus and potassium were noted in meadow soils. Low content of phosphorus was recorded in grassland sites on 59% of mineral and almost 50% of organic soils. Respective figures for potassium deficits were 73% and almost 98%. Mineral soils of grasslands are relatively well supplied with magnesium while organic soils contained less magnesium. Sixty six percent of mineral soils but only 30% of organic soils are rich in magnesium.