New Developments of Solar Energy Utilization in the Aspect of EU Directives

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• Verification of the Measurement System in a Production Organization

• The Analysis of the New Farm Tractors Market in Poland in 2010-2020 in the Context of Income Generated by Farmers’ Households

• The Grain Cleaning Production Lines’ Energysaving Operation Modes of Electromechanical Systems

• Methodical Aspects of Soil Ecosystem Services Valuation

• Modelling Wheat Grain Flow During Sowing Based on the Model of Grain with Shifted Center of Gravity

• Practical Potential of Grain Impurities in the Processing of Sunflower Oil Raw Materials in the Oil and Fat Industry

• Evaluation of the Impact of Tractor Field Works on Changes in Selected Elements of Engine Oils