The aim of the present study was to analyse the physicochemical properties and chemical composition of soil after years of applying varied tillage systems and pre-crops. The field experiments were carried out in Lipnik in Poland. The experiment was conducted over 25 years, with factor I–3 tillage systems: ploughing (A), ploughless (B) and direct sowing (C), factor II-pre-crop–1–faba bean, 2–sugar beet. Simplified tillage systems were used, and increased acidity was found in both layers due to lower pH, as well as an increase in exchangeable aluminum, hydrolytic acidity and exchangeable acidity of soil. The simplification of tillage system resulted in no significant effect on the following soil parameters: sum of base cations (TEB), cation exchange capacity (CEC) and electrical conductivity (EC). In both layers, there was a marked increase in the content of total nitrogen, carbon and available magnesium in soil with ploughless (B) and direct sowing (C) tillage systems. The change of the tillage system, which implied tillage reduction, was found to be the factor which has a significant effect on the physicochemical properties and chemical composition of soil. Tillage resulted a greater effect on the physicochemical properties, whereas pre-crop was found to affect the changes in chemical composition of soil to a greater extent. The results obtained in the research indicate that the tillage systems ploughless (B) and direct sowing (C) can be applied in practice.

The addition of lime and gypsum to wood ash and straw ash were used in the studies. The subject of the study was estimation of the fertilization effect of biomass, ash, gypsum and lime on the content of macro- and microelements in soil and grain of spring wheat. The experiment was carried out in 2016 in the West Pomeranian Voivodeship in Poland. The study compared three factors: wood ash of deciduous and coniferous trees and cereal straw ash (I. factor), two types of ash additions: lime or gypsum (mixture composition: 60% ash and 40% lime or gypsum) (II. factor), three doses of ash with lime or gypsum mixture: 2, 4, 6 Mg·ha⁻¹ and control (III. factor). The analysis of the microelements contents (copper, chromium, nickel and lead) in the soil shows that the application of fertilizer in a form of wood or straw ash as well as PROFITKALK lime or SulfoPROFIT gypsum did not exceed the threshold values for the soil from the first group of land specified in Regulation of the Minister of the Environment of September 1, 2016 on the manner of assessing the pollution of the earth’s surface. After application of biomass ashes (wood or straw) an increase of some macroelements (potassium, phosphorus and calcium) in the soil was observed. The experiment did not reveal any influence of applied fertilization in the form of wood or straw ash nor PROFITKALK lime nor SulfoPROFIT gypsum on changes in iron, manganese and zinc abundance in grains of spring wheat.

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...

The aim of this research was to assess the use of biomass ash for fertilisation of mineral soil. The study involves the analysis of the effects of biomass ash applied to soil on the changes of pH and the content of the available forms of phosphorus, potassium and magnesium as well as on total content of zinc, copper, manganese, nickel, cadmium and lead. The field experiment was conducted in 2013 in Duninowo near Ustka. In experiment grown two plants spring: Spring barley - var. Sebastian, and wheat - var. Bombona. The use of ash from biomass and Biotop compost as fertilisers did not result in any significant changes of soilpH. The use of ash from biomass and Biotop compost caused a significant increase in the contents of available phosphorus, potassium and magnesium in soil. The threshold values of the analysed trace elements in soil, as specified by the Regulation of the Minister of Environment, were not exceeded in any of the fertilising variants in the experiment.

The aim of the study was the assessment of the influence of two cultivation systems and doses of nitrogen fertilization on the content of mineral elements (nitrogen, phosphorus, potassium, calcium, magnesium and manganese) in grain of three varieties of winter spelt ( Triticum asetivum ssp...