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  • Author: Jolanta Korzeniowska x
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Open access

Katarzyna Kantek and Jolanta Korzeniowska

Abstract

The aim of this study was to compare two soil tests, 1 M HCl and Mehlich 3, to extract phytoavailable Cu forms from the soil. The evaluation of tests was performed on the basis of the correlation between soil Cu extracted by the studied extractants, and plant Cu or yield of a test plant. Data for the calculation originated from the microplot experiment with winter wheat. The experiment included three soils that differed in texture, pH level and copper content. Each of the soil was fertilized with five doses of Cu: 0, 4, 8, 12 and 16 kg • ha−1 against two pH levels. The results showed a strong correlation between the two soil tests and their similar usefulness for the extraction of copper available to plants. On the basis of Pearson correlation coefficients and equation of simple regression, it was found that Mehlich 3 was slightly more useful for heavier soils with higher pH, whereas 1 M HCl was better suitable for acid sandy soil.

Open access

Jolanta Korzeniowska and Katarzyna Kantek

Abstract

In recent years, in the literature, there have been frequent reports of insuffcient amounts of copper in the diet of various groups of the inhabitants of our country. This is disturbing as the adequate input of copper is signifcant from the point of view of prevention of cardiovascular diseases. At the same time, grain of wheat cultivated in Poland is characterized by low content of this element. Considering that the main source of Cu is bread and cereal preparations, the important issue is to increase the content of Cu in the grain of wheat. If the defciency in the diet is accompanied by the defciencies in the soil, biofortifcation through fertilization is a favourable solution. Pot experiments have shown the pos-sibility to signifcantly increase Cu content in the grain of wheat as a result of soil fertilization with copper. It was also found that a small difference between the defciency and surplus of Cu in the grain may lead to some copper excess content, especially on the soils with low organic matter content. For this reason, biofortifcation of wheat with copper requires a precise determination of soil fertilization doses under the conditions of feld experiments.

Open access

Sylwia Gołda and Jolanta Korzeniowska

Abstract

The aim of the study was to compare the toleration of Poa pratensis, Lolium perenne and Festuca rubra to cadmium contamination as well as the phytoremediation potential of these three species of grass. The pot experiment was conducted in four replications in pots containing 2.0 kg of soil. The soil was contaminated with three doses of Cd – 30, 60 and 120 mg·kg−1. After two months, the aerial parts of plants were harvested. The roots were dug up, brushed off from the remaining soil and washed with water. The biomass was defined and the cadmium concentration was determined in aerial parts and roots. The phytoremediation potential of grasses was evaluated using biomass of grasses, bioaccumulation factor (BF) and translocation factor (TF). All three tested species of grasses had TF < 1 and BF-root > 1. It indicates their suitability for phytostabilisation and makes them unsuitable for phytoextraction of Cd from the soil. Comparing the usefulness of the tested grasses for phytoremediation has shown that the phytostabilisation potential of P. pratensis was lower than that of L. perenne and F. rubra. P. pratensis was distinguished by higher TF, smaller root biomass and lower tolerance for Cd excess in the soil in comparison with the two other test grasses. At the same time, L. perenne was characterised by the smallest decrease in biomass and the largest Cd accumulation in roots at the lowest dose of Cd. It indicates good usefulness for phytostabilisation of soils characterised by a relatively small pollution by cadmium.

Open access

Ewa Stanisławska-Glubiak, Jolanta Korzeniowska, Józef Hoffmann, Helena Górecka, Wiktor Jóźwiak and Grażyna Wiśniewska

Abstract

For ground phosphate rock (GPR) to be applied as phosphorus fertilizer, the availability of phosphorus to plants needs to be improved. One possible way to achieve this is by adding sulphur, which will accelerate decomposition of phosphate in soil owing to the activation of microbiological processes. This study involved granulation of fertilizers composed of phosphate and sulphur mixed at 38:1 and 10:1 ratios and two analogous fertilizer variants but with added molasses as a source of organic carbon for sulphur bacteria. A small-scale industrial installation for production of multi-component fertilizers was used to make granular fertilizer by the compaction method. The granular fertilizers were then tested in an agricultural experiment. The fertilizer in which the phosphate to sulphur ratio was 10:1 produced better effects. Addition of molasses to the fertilizers did not improve their fertilizing capacity