Changes in phosphorus content, phosphatase activity and some physicochemical and microbiological parameters of soil within the range of impact of illegal dumping sites in Bydgoszcz (Poland)

Abstract

The present research aimed to assess the influence of illegal dumping on changes in the content of phosphorus and its relationship with selected chemical properties. Soil was sampled from two horizons: 0-20 and 20-40 cm. Samples from points W1, W2 and W3 (waste 1, 2 and 3) were collected directly from under illegally deposited landfill sites that differed in the morphological composition. At a distance of 30 m from landfill W3 there were agricultural lands where maize was cultivated (arable soil, AS). The control point (C) was located far from the waste landfill sites determined and beyond the range of their effect. In soil the following were determined: total organic carbon, phosphorus (total, organic, mineral, available, active), the microbiological activity, the content of heavy metals and the activity of alkaline and acid phosphatase. The study concluded that the composition of treatments W1 and W2 had a more negative impact on the soils than landfill site W3. The results show that the changes depended on the type of the waste deposited. In AS and landfills W3 there was observed a high P availability and count of bacteria. The results have shown that an addition of organic residues to soil has a variety of effects on microbial and phosphatase activities. The lowest resistance (RS) for alkaline and acid phosphatases was found in soil from the area of dumping sites W1 and W2; the highest RS was determined in AS. Statistical analyses of simple correlations showed clearly that microbiological populations were also particularly implicated in the activity of phosphomonoesterases.

No-till improves selected soil properties, phosphorous availability and utilization efficiency, and soybean yield on some smallholder farms in South Africa

“…This further supports that organic inputs improve soil microbial activities and increase microbial biomass (Heidari et al, 2016). Moreover, soil organic matter acts as an organic medium for soil enzymes (Lemanowicz et al, 2016). Mineral fertilizers also have effects on phosphatase activity; nonetheless, contrasting results have been reported.…”

“…However, the increase of Ca and Mg at 30 kg/ha P could be a result of lower Fe concentration at the same fertilizer rate and vice versa at 60 kg P/ha application. Iron and Aluminum, like many metals, are predominantly found in strongly acidic soils such as the experimental site (Lemanowicz et al, 2016;Heuer et al, 2017). Therefore, significant decrease of Fe at 30 kg/ha P could be due to fixation: Fe/Al oxides fix more than 80% of applied P; this reaction may significantly reduce Fe and available P in the soil solution (Heuer et al, 2017;Zhu et al, 2018).…”

Response of Microbial Activities in Soil to Various Organic and Mineral Amendments as an Indicator of Soil Quality

“…As compared with the initial condition of soil used in the experiment (Appendix A; Table A1), the control variant exhibited a lower content of plant available P after the end of the experiment. This variant was not fertilized and microorganisms did not have enough organic matter for decomposition due to PA [42,50,51]. A different situation was observed in the variant where composts (C VER and C BD ) were applied at more than 565 mg P/kg of C BD and 800 mg of P in one kg of C VER (Appendix A; Table A1).…”

Use of phosphatase and dehydrogenase activities in the assessment of calcium peroxide and citric acid effects in soil contaminated with petrol

“…Phosphatases form another important group of soil enzymes [ 5 ]. They play a significant role in the process of biochemical mineralization of organic phosphorus, and thus may act as a good indicator of the mineralization potential of organic phosphorus and biological activity taking place in soil [ 11 ]. Phosphatases form a group of enzymes that hydrolyze esters and the anhydrides of phosphoric acid [ 12 ].…”