Wyniki wyszukiwania - BazTech

1

Content of Heavy Metals in Reclaimed Soil Material and Hard Coal ash 15 Years After the Experiment

Gibczyńska Marzena, Tomaszewicz Tomasz, Stankowski Sławomir, Chudecka Justyna, Gamrat Renata

Journal of Ecological Engineering

|

2021

|

Vol. 22, nr 4

59--65

EN

The paper the results obtained during hard coal ash reclamation. This model was created by covering the ash surface with the layers consisting of ash, organic by-products and mineral fertilizers. The aim of the studies, undertaken 15 years after the experiment set up, was the assessment of the efficacy of ash waste reclamation on the basis of the overall and solubility analyses of the metal content, including heavy metals, soluble in 1 M HCl. In 2003, on the premises of Dolna Odra Power Station in Nowe Czarnowo (53,20°N; 14,48°E) near Gryfino (53,25°N; 14,48°E) in Poland, a hard coal ash reclamation experiment was conducted. A 40 cm thick surface layer (fertile), termed upperlay, composed of the mixture of various materials was applied to ash substrate. One part was fertilized with mineral fertilizers NPK-60–70–70, the other was left unfertilized. After 15 years, in the autumn of 2018, the samples of upperlays (0–40 cm) and underlays (40–60 cm) were collected from plots overgrown with grass. Fifteen years after the experiment, none of the underlays or upperlays showed an excess of threshold values, as specified in the current Regulation of the Minister of the Environment of 2016. The particularly favourable effect was identified with respect to the application of fermented municipal sewage sludge and GWDA compost which were factors resulting in a decrease of the upperlay content of cadmium, zinc, copper and lead in the form available for plants. The characteristics of upperlays with respect to metal content indicate the conditions favourable to plant cultivation on the reclaimed area. The recorded results on the change of the overall and bioavailable content of metals in upperlays and underlays justify the continuation of the undertaken reclamation experiment.

2

Assessment of the Effect of Foliar Silicone Fertilizer on Winter Wheat Cultivation

Stankowski Sławomir, Hury Grzegorz, Sobolewska Magdalena, Jaroszewska Anna, Bashutska Ulyana, Gibczyńska Marzena

Ecological Engineering & Environmental Technology

|

2021

|

Vol. 22, iss. 2

75--80

EN

The aim of the conducted field experiment was efficacy assessment of foliar fertilization of Hondia winter wheat cultivar. The conducted studies concerned the wheat yield, the characteristics of grain including the macroelement content and the parameters of the obtained flour. The field experiment was conducted in the growing period of 2018/2019 in Lipnik at the Agricultural Experimental Station belonging to the West Pomeranian University of Technology in Szczecin. The experiment was conducted on light soil of good rye complex, belonging to IV b bonitation class. The factor under study in the present experiment was spraying with Polist 18 N with silicone. The effects of 4 variants were compared (without spraying, one spray – initiation of vegetation, two sprays – initiation of vegetation and shooting phase, three sprays – initiation of vegetation, shooting phase and earing phase). The experimental plant was Hondia winter wheat cultivar from DANKO Plant Breeder. Significant yield of winter wheat increase was obtained following three sprayings with Polist 18 N with silicone. The obtained results indicate the possibility of further increase in yield following the fourth spraying in the grain maturity phase. The introduction of a dose of 400 g SiO2 per hectare (three sprayings) resulted in significant changes in the qualitative characteristics of winter wheat grain cultivar Hondia and flour. There was an increase in the gluten content, value of sedimentation index, quality number and dough development time. The obtained results show that the application of Polist 18 N with silicone to winter wheat is substantiated.

3

Analysis of the Content of Macroelements in Soil and Seeds of Winter Rape (Brassica Napus Var. Napus) as a Result of Fertilization Using Two-Component Mineral Fertilizers

Stankowski Sławomir, Hury Grzegorz, Sobolewska Magdalena, Gibczyńska Marzena

Journal of Ecological Engineering

|

2019

|

Vol. 20, nr 4

61--68

EN

The subject of the study was an analysis of the influence of two-component mineral fertilizers of Polish, Lithuanian and Russian production on the changes in the soil pH and the contents of available phosphorus and potassium as well as exchangeable magnesium after winter rape cultivation and the content of macroelements in winter rape seeds. The study also focused on the effect of using varying doses of fertilizers. A two-year field experiment was carried out on soil belonging to loamy sand, the IVa bonitation class. The experimental plant was winter rape, DK EXPLICIT hybrid. The experiment was established using random blocks design in 4 replicates. Two factors were compared in the studies: I. factor – 3 two-component mineral fertilizers of Russian, Lithuanian and Polish production (POLIDAP®). II. factor – 3 doses of fertilization (minimum, optimum, maximum, which were respectively: 1.0, 2.0, 3.0 dt per hectare). Introducing the two-component fertilizers and diversification of their doses was a factor that did not change the soil acidification. The applied two-component fertilizers (Russian, Lithuanian and Polish POLIDAP®) caused an increase in the amount of available phosphorus in the soil, with no differences depending on the fertilizer type. Diversification of the two-component fertilizers and potassium salt doses was reflected in a significant, but not proportional to the dose, increase in the amount of available phosphorus and potassium in the soil. While using fertilizers of Russian, Lithuanian and Polish production (POLIDAP®) during rape cultivation, there was no difference in the nitrogen, phosphorus, magnesium and sulfur contents in the seeds of cultivated winter rape of hybrid DK EXPLICIT cv.