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The content of selected macroelements and microelements in acid tvorogs with a different fat content

100%

Siemianowski K., Tonska E., Szpendowski J.

Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica

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2014

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tom 32

Przeprowadzono analizę zawartości wybranych makroelementów i mikroelementów w twarogu kwasowym o różnej zawartości tłuszczu. Materiał badawczy stanowił twaróg kwasowy chudy (0% tłuszczu), półtłusty (4% tłuszczu) i tłusty (8% tłuszczu), pochodzący od jednego producenta. W badanym twarogu oznaczono zwartość suchej masy oraz popiołu całkowitego. Próbki twarogu poddano mineralizacji na mokro, a następnie oznaczano w nich zawartość wybranych makroelementów (P, Ca, Mg, K, Na) i mikroelementów (Zn, Fe, Cu, Mn). Zawartość Ca, Mg, Zn, Fe, Cu i Mn oznaczono techniką płomieniowej spektrometrii absorpcji atomowej (płomień acetylen – powietrze). K i Na oznaczano techniką emisyjną (płomień acetylen – powietrze). Do oznaczenia zawartości P zastosowano metodę kolorymetryczną. Badany twaróg kwasowy chudy, półtłusty i tłusty różnił się istotnie pod względem zawartości suchej masy. Twaróg kwasowy chudy charakteryzował się istotnie większą zawartością popiołu całkowitego niż twaróg kwasowy półtłusty i tłusty. W przeprowadzonych badaniach wykazano istotne różnice między badanym twarogiem kwasowym w zawartości P, Ca, K, Na, Zn, Fe, Cu i Mn, nie wykazano natomiast istotnych różnic w przypadku zawartości Mg. Bez względu na zawartość tłuszczu w badanym twarogu kwasowym w największych ilościach spośród oznaczonych makroelementów (około lub powyżej 100 mg · 100 g–1 produktu) występował: fosfor, potas i wapń, natomiast spośród mikroelementów (w ilości powyżej 600 μg · 100 g–1 produktu) – cynk.

2

The content of microelements in grain of six maize cultivars depending on the harvest date

86%

Szymanska G., Sulewska H., Panasiewicz K.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2009

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tom 541

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nr 2

Maize has very homogenous grain which is considered to be the best animal feed in the world, characterized by the highest availability of energy and other nutrient elements. However, the conditions of the habitat, species characteristics and caryopsis structure can modify the contents of mineral elements in grain. The literature lacks reports identifying the influence of the harvest date and cultivar on the microelement content in maize grain. The experiments were conducted between the years 2003-2005, in the fields of the Swadzim Research and Didactic Institute, belonging to the Department of Soil and Plant Cultivation of Poznań University of Life Sciences. Their aim was to determine changes in the content of selected microelements in grain of six maize cultivars differing in the lenght of vegetation time and type of grain due to delays in the harvest date. The experiment was bifactor in 4 field repetitions. The first order factor was the date of harvest: 1st - the „black spot” stadium in ripening caryopsis; 2nd - 6th - further harvests performed fortnightly. The second order factor was the cultivar; the selected cultivars differed in the terms of earliness and type of grain. „Dent” cultivars were PR39T68 (FAO 200), Blask (FAO 240-250), Clarica (FAO 270). „Flint” cultivars were Oleńka (FAO 200), Matilda (FAO 240), Anjou 258 (FAO 260-270). On average the highest content of Cu and Fe was recorded in grain harvested six weeks after the „black spot” phase, and Mn and Zn in grain harvested four weeks after this phase. Among the tested cultivars the highest content of Cu and Fe was recorded for the medium early cultivar Blask, and Mn and Zn for the early cultivar Oleńka.

3

Content of microelements in potato bulbs fertilized foliarly with microelements

86%

Kozera W., Nowak K., Majcherczak E., Barczak B.

Journal of Elementology

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2005

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tom 10

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nr 4 Suppl.1

52-53

4

The contents of selected trace elements in the soils of Bellsund, Spitsbergen

86%

Melke J.

Polish Journal of Soil Science

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2006

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tom 39

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nr 1

The aim of the study was to estimate some of the microelements (Cu, Zn, Mn, Pb and Cd) in the form available to plants and extracted from the soils of the Bellsund seaboard with DTPA-TEA and to estimate the level of connection between these metals and the soil properties. The study of the microelements was conducted during the polar expeditions of the Institute of Earth Sciences (UMCS, Lublin) to Spitsbergen in the years 1987-2002. The research embraced Gelic Leptosols, Gelic Regosols, Gelic Gleysols, Gelic Cambisols, Gelic Histosols soils occurring in the major physio-graphic units (Dunderdalen, Logne, Dyrstaddalen, Työrndalen, Blomlidalen, Lyellstranda, Calypso-stranda, Tomtoden, Chamberlindalen) of the Bellsund area. The research enables us to draw some general conclusions: (i) the contents of the analysed heavy metals (Cu, Zn, Mn, Pb, Cd) as well as the properties of Bellsund soils are diversified; (ii) statistical analysis shows a negative correlation between the Pb and Cu content with the content of sand ɸ 1-0.1 mm fraction, positive correlation of the Cd and Mn contents with the fine fraction, and of the Pb and Zn contents with organic carbon; (iii) the tested soils are not contaminated with any DTPA-TEA extractable microelemets.

5

Content of microelements in crops of long-fibred flax depending on forms and microfertilizers applied

72%

Tsyganov A., Kukresh S., Khodyankova S., Duktov V.

Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura

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2004

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tom 59

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nr 4

6

Basic chemical composition, content of micro- and macroelements and antioxidant activity of different varieties of garlic's leaves Polish origin

72%

Piatkowska E., Kopec A., Leszczynska T.

Żywność Nauka Technologia Jakość

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2015

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tom 22

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nr 1

The aim of this study was to comparison of chemical components and antioxidant activity in leaves of winter and spring varieties of garlic, obtained from POLAN Company; Krakow, Poland) as well as in leaves of wild (bear’s) garlic. The content of basic chemical components were determined according to the AOAC methods. Selected minerals content was determined according to the PN procedure. Vitamin C and polyphenols were determined using the Tillman’s and Folin-Ciocalteau’s methods, respectively. The ability to scavenging of the ABTS•+ was analyzed by Re et al. method. Leaves of wild garlic had the significantly lowest amount of dry matter (79.0 g·kg⁻¹), proteins (13.7 g·kg⁻¹), total carbohydrates (50.8 g·kg⁻¹), dietary fiber (26.9 g·kg⁻¹), ash (8.9 g·kg⁻¹), vitamin C (956.1 mg·kg⁻¹), and antioxidant activity (25.0 mmol TEAC·kg⁻¹), but the highest level of crude fat (5.6 g·kg⁻¹), potassium (34.6 g·kg⁻¹), magnesium (1.72 g·kg⁻¹), iron (230.3 mg·kg⁻¹) and zinc (58.8 mg·kg⁻¹) as compared to winter and spring varieties. At the same time, there was no unambiguous differences in the level of basic chemical components (proteins 20.9 ÷ 35.7 g·kg⁻¹, fat 1.6 ÷ 2.8 g·kg⁻¹, total carbohydrates 61.3 ÷ 116.5 g·kg⁻¹, fibre 33.7 ÷ 57.0 g·kg⁻¹, ash 8.9 ÷ 14.1 g·kg⁻¹), antioxidants (vitamin C 75.4 ÷ 459.7 mg·kg⁻¹, polyphenols 335.3 ÷ 1895.1 mg·kg⁻¹), antioxidant activity (27.0 ÷ 30.1 mmol TEAC·kg⁻¹) and the amount of minerals (calcium 7.55 ÷ 28.9 g·kg⁻¹, potassium 15.9 ÷ 28.0 g·kg⁻¹, magnesium 0.85 ÷ 1.32 g·kg⁻¹, sulphur 2.41 ÷ 6.22 g·kg⁻¹, iron 34.4 ÷ 85.7 mg·kg⁻¹, zinc 9.32 ÷ 13.8 mg·kg⁻¹) between winter and spring varieties, as well as between winter varieties.

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Macro- and microelements in human milk, UHT cow's milk and infant formulas

72%

Pietrzak-Fiecko R., Markiewicz K., Smoczynski S. S.

Journal of Elementology

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2004

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tom 09

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nr 2

8

Differentiated microelement content in anthurium [Anthurium cultorum Birdsey] leaves

72%

Kleiber T., Komosa A.

Journal of Elementology

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2010

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tom 15

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nr 2

301-311

The main objective of the study was to determine the nutritional status in terms of the content of microelements, such as iron, manganese, zinc, copper and boron in several standard cultivars of anthurium (Anthurium cultorum Birdsey) called Baron, Choco, Midori, Pistache, President and Tropical. The plants were grown in expanded clay (ř 8-18 mm) using drip fertigation with standard nutrient for anthurium grown in inert substrates with the following components: N-NH4<1.0, N-NO3 7.5, P 1.0, K 4.5, Ca 1.5, Mg 1.0, S-SO4 1.5 (mmol dm–3), Fe 15, Mn 3.0, Zn 3.0, Cu 0.5, B 20.0, Mo 0.5 (μmol dm–3), pH 5.5-5.7, EC 1.5-1.8 mS cm–1. Every two months, anthurium indicator parts were sampled for chemical analyses. The indicator parts included fully developed leaves from plants after freshly cut flowers. The average microelement content in the indicator parts showed the following values (in mg kg–1 d.m.): Fe 47.6-58.0, Mn 36.9-45.1, Zn 60.3-67.6, Cu 5.01-6.43, B 63.5- -89.0. It was found that a significant effect on the nutritional status with respect to microelements was produced by the plant cultivar type. The highest content of iron in the indicator parts was found in cv. Baron; manganese was most abundant in cv. Choco; cv. Midori was the richest in zinc and boron appeared in the highest level in cv. Pistache. Coefficients of variability (CV) of the analyzed microelements were determined. The smallest variability during 3 years of studies was shown by copper (CV 15.4-24.3%), a mean value was found in boron (CV 20.9-26.7%) and in iron (CV 25.1-31.4%), while the highest values were shown by zinc (CV 39.7-44.7%) and by manganese (CV 40.4-58.5%).

9

Content of macro- and microelements in sweet pepper fruits depending on foliar feeding with calcium

72%

Buczkowska H., Michalojc Z., Konopinska J., Kowalik P.

Journal of Elementology

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2015

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tom 20

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nr 2

Sweet pepper belongs to vegetables with high biological value, characteristic taste and health-promoting features, which depend on the content of many elements with antioxidant capacity. Pepper fruits are an important source of mineral components for people. The aim of this study was to determine the effect of different foliar feeding regimes with the use of calcium on the content of macro- and microelements in sweet pepper fruits. The experiment with the sweet pepper cultivar Caryca F1 was carried out under field conditions in 2010-2011. Various calcium preparations: Ca(NO3)2 , Insol Ca, Librel Ca, were applied in plant nutrition. The evaluated preparations were sprayed 3 and 5 times, in the concentration of 1%, until complete wetness of the plants. Control fields were sprayed with water. No significant influence of the examined factors on the dry matter content (%) was recorded in the fruits of cv. Caryca F1 sweet pepper cultivated in a field. However, the influence of the applied calcium preparations on the content of N-total, P, Ca, Fe, Zn, Cu in pepper fruits was shown to vary. After an application of Ca(NO3)2, higher concentrations of K, Zn, Cu were demonstrated; an application of Insol Ca stimulated a higher content of K and Cu; more K, Fe, Zn and Cu occurred in the fruit after feeding with Librel Ca, and the content of P was lower after an application of Insol Ca and Librel Ca, all versus the control. The different number of treatments did not have any significant effect on the chemical content of pepper fruits, except for Fe and Mn, where 5 treatments increased the content of these elements in pepper fruits. The positive influence of the applied calcium preparations and of the number of treatments on the accumulation of Ca in pepper fruits were proven. For example, 5 treatments were demonstrated to have increased the calcium content in fruits by an average 25.3%, and 3 treatments raised the above trait by 15.3% above the control.

10

Content of available forms of some micronutrients in soil after long-term differentiated fertilization

72%

Sienkiewicz S., Wojnowska T., Krzebietke S., Wierzbowska J., Zarczynski P.

Journal of Elementology

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2009

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tom 14

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nr 4

The objective of this study has been to follow modifications in the content of Cu, Zn and Mn in the topmost layer of soil which had been fertilized for many years with farmyard manure and mineral fertilizers or with mineral fertilizers alone. Soil samples were collected in 2002-2005 from a trial established in 1986 on proper brown podsolic soil, according to the random block design with four replication. The first factor consisted of organic fertilization (manure applied every two years or without manure). The second factor involved different rates of mineral fertilization. Rates of nutrients in the mineral fertilizers were identical in both experimental series – with or without manure. In each year, the same crop was grown on both fields, in a crop rotation system: sugar beet (2002), spring barley (2003), maize (2004) and spring wheat (2005). Plant available forms of nutrients were extracted from soil in 1 mol HCl dm-3 solution. After extraction, the content of metals was determined by atomic absorption spectrophotometry. The results underwent statistical processing using analysis of variance for a two-factor experiment. The content of available forms of copper, zinc and manganese in soil regularly amended with manure was evidently higher than analogous concentrations determined in soil receiving only mineral fertilization since 1986. Manure most strongly improved the concentration of Cu (nearly 1.7-fold), while producing the weakest influence on manganese (over 1.3-fold more). In absolute values, however, the increase in availability of manganese was the highest, reaching on average 52 mg kg-1 of soil. Differentiated mineral fertilization with nitrogen or potassium as well as manganese and liming to a lesser extent than manure modified the availability of Cu, Zn and Mn in soil. Among these nutrients, nitrogen most often increased the content of plant assimilable forms of metals in soil, which may have been caused by its acidifying influence.

11

The evaluation of manganese, zinc and copper content in the soils of chosen forest habitats in the area of the Jezierzyca River Valley Landscape Park

72%

Kawalko D.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2009

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tom 541

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nr 1

The aim of the study was to analyze the total content of micronutrients in the soils in some habitats in the area of the Jezierzyca River Valley Landscape Park. Experimental sites were chosen with regard to different habitats (humid mixed coniferous forest, fresh mixed coniferous forest, humid mixed forest, fresh mixed forest). There are arenosoils, rusty and podzol soils and gley soils. The soils were developed from the river alluvial sands and fluvial sands and prove the acidic reaction. Results showed that the total content of Mn, Zn and Cu is highest in the organic levels and decreases with the depth in the analyzed soils. Only in the podzols soils the total content of Mn decreases in the eluvial horizon and increases in the iluvial horizon. The conducted investigations indicate no pollution of the soils with the micronutrients. The exception was a higher content of Cu in the superficial level of soils in humid and fresh mixed coniferous forest.

12

The long-term impact of ameliorating doses of hard coal fly ash on shaping the content of selected microelements in agricultural soil

72%

Ciecko Z., Zolnowski A. C., Madej M., Wasiak G., Lisowski J., Rolka E.

Polish Journal of Soil Science

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2015

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tom 48

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nr 1

The effect of ameliorating doses of hard coal fly ash (HCFA) on chemical properties of soil and on yields and chemical composition of crops was examined based on an experiment established in 1984. At first, typical agricultural crops were grown in the experiment, but in 1992 the field was turned into permanent grassland. The current study took place twenty-nine years after hard coal fly ash had been applied. Soil samples were collected from the 0–20 cm soil layer, corresponding to the compared treatments. The residual effect of HCFA doses increasing from 100 to 800 Mg·ha⁻¹ caused a regular increase in the total content of Cd, Cr, Cu, Mn, Fe, Zn and Pb, as well as the forms of Zn, Cu, Mn, Fe and B soluble in 0.1 M HCl. The total content of the analyzed microelements increased by a maximum of 30% for cadmium up to 176% for zinc. The highest increase in the content of soluble forms ranged from 25% for Fe to 760% for boron. The share of Znbd, i.e. permanently bound to soil, to Zntot, i.e. the total zinc form, was positively correlated with pH in KCl, the C:N ratio and the content of Cu permanently bound with soil. Regarding the share of Febd in Fetot, correlations with pH in H₂O and in KCl, content of organic matter (SOM) and the C:N ratio were demonstrated. No such correlations were proven with respect to the other elements.

13

The influence of agrotechnical factors on bioavailable contents of microelements in the humus horizon of soil

72%

Jakubus M.

Polish Journal of Soil Science

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2007

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tom 40

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nr 2

195-205

The objective of this research project was to determine the impact of the cultivated crop plants, nitrogen fertilisation and sprinkling on the contents of microelements obtained from the DTPA extract. It was found that the bioavailable content of the microelements was determined by all the three factors, with the sprinkling affecting more conspicuously the content of iron, copper and zinc in the soil, while crop rotation exerted a distinctly stronger impact on content of manganese.

14

Content of components in some grass species irrigated with purified sewage

72%

Baryla R., Sawicka J., Kulik M., Lipinska H.

Journal of Elementology

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2009

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tom 14

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nr 1

5-12

Soil is a unique laboratory of transformations and energy flow, and in particular of biological sorption and synthesis of mineral components that can originate from various sources. The introduction of biomass or sewage into soil contributes to its nutrient enrichment. This can lead to periodical excess of these elements in soil and cause their migration from the soil system to underground waters, and eventually to open waters. Grass communities belong to a group of plants that make excellent use of nutrients present in soil and perform a very important role in additional purification of sewage after its mechanical purification. Grasses demonstrate resistance to the presence of large quantities of harmful compounds in sewage; they accumulate and neutralise them physiologically, thus preventing their dissemination. The aim of this paper was to evaluate content of some macro- and microelements as well as heavy metals in chosen grass species irrigated with purified sewage. In 1997- -2000, research was conducted near the Hajdów Sewage Works, using purified sewage for irrigation of grass communities. Three rates of irrigation (a – control without irrigation; b – irrigation in quantity 600 mm and c – irrigation in quantity 1200 mm) as well as two grass mixtures were tested. Content of basic macroelements (N, P, K, Ca, Mg), microelements (Cu, Zn, Mn) as well as heavy metals (Cd, Pb) in dominant grass species (Alopecurus pratensis, Phalaris arundinacea, Festuca arundinacea, Festuca pratensis and Phleum pratense) were determined. The content of the analyzed components in biomass was varied and depended on the grass species in the analyzing mixtures as well as on the applied rates of irrigation. Festuca pratensis and Festuca arundinacea were characterized by the largest capacity to take up calcium (Ca) and magnesium (Mg), Phalaris arundinacea – phosphorus (P) and zinc (Zn), while Alopecurus pratensis – cadmium (Cd) and lead (Pb). Biomass of Alopecurus pratensis was characterized by the lowest content of most of the elements, especially nitrogen, phosphorus, calcium and magnesium. The applied irrigation, especially the 1200 mm rate significantly increased potassium content and decreased manganese content in biomass of the analyzed grass species. The most useful grass species used to establish meadows irrigated with sewage are Phalaris arundinacea, Festuca arundinacea and Festuca pratensis.

15

Differentiation of microelements contents in nutrient solution and drainage water in growing of anthurium (Anthurium cultorum Birdsey) in expanded clay

72%

Kleiber T., Komosa A.

Acta Scientiarum Polonorum. Hortorum Cultus

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2008

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tom 07

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nr 1

Vegetative experiments were carried out in the years 2002–2004 in two specialistic horticultural farms growing the most popular in Poland and in the Netherlands cultivars of anthurium (Anthurium cultorum Birdsey): ‘Baron’, ‘Choco’, ‘Midori’, ‘Pistache’, ‘President’ and ‘Tropical’. Plants were grown in expanded clay with the use of drop fertigation with standard nutrient for anthurium in inert substrates (in mg‧dm⁻³): N-NH₄ < 14.0, N-NO₃ 105.0, P 31.0, K 176.0, Ca 60.0, Mg 24.0, S-SO₄ 48.0, Fe 0.840, Mn 0.160, Zn 0.200, B 0.220, Cu 0.032, Mo 0.048, pH 5.5–5.7, EC 1.5 – 1,8 mS‧cm⁻¹. Subject of studies was the differentiation of microelement content in drainage waters driped from the substrate in relation to the supplied nutrient. Manganese was the nutrient wich was most intensely decreased (by –65.5%), followed by iron (by –51.9%) and zinc (by –45.2%). On the other hand, an increase was found in copper (by +11.1%) and in boron (by +16.6%). The recognition of changes in the contents of nutritive components in the drainage waters is a basis for the elaboration and implementation into the horticultural practice of closed fertigation systems with nutrient recirculation.

16

Variation in micronutrients concentration in lupine, pea and maize during the vegetation period on sandy soils

72%

Stanisławska-Glubiak E., Korzeniowska J.

Polish Journal of Agronomy

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2010

|

nr 02

17

Quality characteristics and content of mineral compounds in fruit of some cultivars of sweet pepper [Capsicum annuum L.]

72%

Jadczak D., Grzeszczuk M., Kosecka D.

Journal of Elementology

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2010

|

tom 15

|

nr 3

509-515

The study was carried out in 2005–2007. The aim of the experiment was to estimate the quality and mineral compound content in sweet pepper fruits. The experimental material consisted of seven F1 hybrids grown in the open field: ISI 56511 F1, ISI 56503 F1, Axel F1, Akron F1, Roei F1, Elfo F1 and Polonez F1 (control cultivar). The fruits were harvested many times. They were collected when green and fully grown. After the harvest, the fruit quality including its mean weight, length, diameter, pericarp weight and pericarp thickness, was evaluated. In 2006-2007, the content of macro– and microelements, such as nitrogen, phosphorus, potassium, sodium, calcium, magnesium, iron, zinc and nitrates was determined in the dry weight of the yield. The results were statistically evaluated by the analysis of variance. Significance of the differences was tested by Tukey’s test at p = 0.05. The biometrical traits of fruits were characteristic for each cultivar. The highest content of dry weight was found for cultivar ISI 56511 F1 (11.2% higher than the mean amount determined for all of the cultivars and 39.8% higher than the lowest dry matter content assessed in fruits of cultivar Roei F1). The sweet pepper cultivars tested in the experiment differed significantly in the content of macro- and microelements. The highest content of nitrogen was determined in fruits of cultivar Polonez F1. Fruits produced by cultivars Elfo F1, ISI 56503 F1 and Roei F1 in comparison with the other cultivars were characterized by a significantly higher content of iron. The highest content of nitrates was assessed in cultivar ISI 56503 F1 fruit.

18

Zawartość wybranych mikroelementów i pierwiastków śladowych w płatkach owsianych

72%

Acta Agrophysica

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2017

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tom 24

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nr 1

W pracy oznaczono zawartość wybranych mikroelementów i pierwiastków śladowych w płatkach owsianych. Materiał do badań stanowiło 14 rodzajów płatków owsianych produkcji krajowej, jak i zagranicznych, określanych jako błyskawiczne i zwykłe, oraz tzw. ekologiczne i normalne. W materiale oznaczono zawartość: żelaza, manganu, cynku, miedzi oraz tzw. metali ciężkich (chrom, kadm, nikiel, ołów). Dopuszczalny poziom ołowiu został przekroczony w jednej próbce, która również charakteryzowała się zwiększoną zawartością miedzi. Nie zaobserwowano istotnej różnicy w zawartości miedzi i kadmu pomiędzy płatkami normalnymi a ekologicznymi. Płatki produkcji krajowej charakteryzowały się istotnie mniejszą zawartością żelaza, cynku oraz niklu, w porównaniu do płatków zagranicznych, z kolei poziom ołowiu był w nich istotnie wyższy. Pochodzenie płatków nie miało wpływu na zawartość manganu, miedzi oraz kadmu.

19

Zawartość wybranych makro i mikroelementów w przekompostowanych komunalnych odpadach biodegradowalnych

72%

Gondek K., Kopec M.

Acta Agrophysica

|

2012

|

tom 19

|

nr 3

Przeprowadzone badania miały na celu określenie wpływu procesu kompostowania, głównie podgrupy odpadów komunalnych oznaczonych w katalogu odpadów kodem 20 02 (odpady z ogrodów i parków), z różnymi dodatkami (skrobia, olej jadalny, mocznik) na zawartość form ogólnych i rozpuszczalnych w wodzie wybranych makro (Mg, Ca, Na, K, P) i mikroelementów (Zn, Cu, Mn, Fe), co może stanowić podstawę oceny wartości nawozowej przekompostowanej biomasy. Z założenia poziom oraz skład dodatków, z punktu widzenia praktyki „czystych chemicznie”, miał pozytywnie modyfikować proces kompostowania. Biomasę do kompostowania przygotowano z następujących organicznych materiałów odpadowych (20 02 01); zrębki z drzew liściastych (udział w biomasie 43,87%); trawa (udział w biomasie 23,13%); odpad (02 03 03) z produkcji kawy zbożowej (udział w biomasie 21,94%) oraz odpad (02 03 82) roślinny z przemysłu tytoniowego (udział w biomasie 10,96%). Eksperyment obejmował następujące warianty prowadzone w dwóch powtórzeniach: K1 – kompost „grzejny” bez dodatków (obiekt kontrolny); K2 – kompost „grzejny” + skrobia (produkt spożywczy); K3 – kompost „grzejny” + olej jadalny; K4 – kompost „grzejny” + mocznik (czysty chemicznie). Dodatek skrobi, oleju jadalnego lub mocznika stanowił 5% w stosunku do świeżej masy kompostu „grzejnego” o. W warunkach przeprowadzonych badań proces kompostowania odpadów biodegradowalnych prowadził do zwiększenia zawartości ogólnych form badanych makro i mikroelementów. W kompoście kontrolnym, z dodatkiem skrobi oraz oleju jadalnego oznaczone zawartości form rozpuszczalnych w wodzie magnezu, wapnia i fosforu zmniejszyły się a potasu i sodu zwiększyły się w porównaniu do zawartości oznaczonej w kompoście ”grzejnym”. Wpływ zastosowanych dodatków do kompostowania na zawartość form rozpuszczalnych w wodzie badanych mikroelementów był zróżnicowany, uwarunkowany poziomem ubytku substancji organicznej oraz właściwościami chemicznymi pierwiastka. Wprowadzenie 5% dodatku mocznika do kompostowanej biomasy spowodowało zwiększenie zawartości form rozpuszczalnych w wodzie wszystkich badanych pierwiastków, oprócz zawartości magnezu.

20

The magnesium content in plants in soil contaminated with cadminum

72%

Ciecko Z., Kalembasa S., Wyszkowski M., Rolka E.

Polish Journal of Environmental Studies

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2005

|

tom 14

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nr 3

The aim of the experiments was to determine the effect of cadmium-contaminated soil (10, 20, 30 and 40 mg Cd · kg⁻¹ soil) on the magnesium content in oats, maize, yellow lupine and radish. Compost, brown coal, lime and bentonite were added to reduce the undesirable effect of cadmium contamination on the plants. As a result of soil contamination with cadmium, the amount of magnesium increased in all the examined parts of the oats, in the above-ground parts of yellow lupine and radish as well in the roots of maize. The application of compost, lime, bentonite and especially brown coal into the soil had an overall positive effect on the magnesium content in the vegetative parts of the crops. The magnesium content in the plants was generally correlated with the accumulation of other macro- and some microelements.

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