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Evaluation of the usability of single extractors in chemical analysis of composts using principal component analysis

Monika Jakubus;  Małgorzata Graczyk — 2015

Biometrical Letters

The usability of various single extractors in the chemical analysis of composts was evaluated using principal component analysis. Ten different single extractors were used to determine the contents of microelements obtained in the chemical extraction of four different composts. It was found that principal component analysis is a satisfactory statistical method enabling the comparison of different solutions in terms of efficiency of extraction of microelements from composts of different composition....

The mineralization effect of wheat straw on soil properties described by MFPC analysis and other methods

Monika Jakubus;  Mirosław Krzyśko;  Waldemar Wołyński;  Małgorzata Graczyk — 2016

Biometrical Letters

Recycling of crop residues is essential to sustain soil fertility and crop production. Despite the positive effect of straw incorporation, the slow decomposition of that organic substance is a serious issue. The aim of the study was to assess the influence of winter wheat straws with different degrees of stem solidness on the rate of decomposition and soil properties. An incubation experiment lasting 425 days was carried out in controlled conditions. To perform analyses, soil samples were collected...

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