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A study has been carried out on the basis of a field experiment set up on soil of very good rye complex. The experiment was designed as randomized sub-blocks with three replications. Experimental factors included three cultivars of edible potato – Wiking, Mors, and Żagiel, and six Colorado potato beetle control methods using the following insecticides: Actara 25 WG at the rate of 80 g ha-1, Regent 200 SC at the rate of 0.1 dm3 ha-1, Calypso 480 SC at three rates: 0.05; 0.075 and 0.1 dm3 ha-1, and a control treatment without chemical protection. Magnesium and calcium contents in potato tubers were determined by the ASA method. The content of the elements depended on the cultivars, Colorado potato beetle control methods and weather conditions throughout the growing season. The insecticides applied significantly increased magnesium and calcium contents compared with the tubers harvested from the control treatment where no chemical protection was applied. Tubers of Żagiel and Wiking cultivars had the highest magnesium content and calcium content, respectively.
Subject and purpose of work: The aim of this work is to present the possibilities of cultivating varieties of industrial hemp which are registered in Poland in areas of high nature value. Materials and methods: This work is a type of overview; it describes characteristic features of areas of high nature value. It also presents specific biological properties, cultivation and agrotechnical requirements, as well as the versatility of industrial hemp usage. Results: This study demonstrated considerable importance of industrial hemp in developing areas of high nature value, in accordance with the idea of sustainable development. Conclusions: Due to the specific biological properties of industrial hemp, its low cultivation and agrotechnical requirements and lack of the need to use pesticides, industrial hemp can be successfully grown in areas of high nature value.
Subject and purpose of work: The work is of a review character. The present paper aims to introduce basic definitions related to degradation and reclamation of the areas with lower use value, and also to present the most important species of perennial energy crops, which can be possibly used in the reclamation of degraded soils. Materials and methods: This work is based on collected information concerning soil degradation, perennial energy crops and their use in the reclamation. Results and conclusions: Characteristics of recommended species of perennial energy crops to a reclamation of degraded soils: willow, Virginia fanpetals, the Jerusalem artichoke, giant miscanthus, amur silver-grass, prairie cordgrass, rosa rugose, black locust, ashleaf maple has been presented. The analysis of the soil degradation in Lublin Voivodeship has been based on the professional literature. On that basis, the plants which would be the best in the reclamation of this area have been chosen. This work also takes into account the estimated costs of establishing plantations of these plants
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The aim of this study is to present the role of fabaceae plants in ecological farms in Lubelskie Voivodeship. The study has been written based on the literature research on the subject, mandatory legal acts, statistical data on ecological farming. In the implementation of the environmental policy, Poland has adopted a sustainable and balanced development strategy, according to which the obligation to protect the environment is part of the proper farming (Jaśkiewicz 2008). A particular way of farming that is the most environmental friendly is ecological farming. Lublin Voivodeship has a special predisposition to the development of organic production (Kasztelan 2010). A valuable element of environmental friendly farming are Fabaceae plants. Their cultivation does not threaten the natural environment, as on Agrotechnik these plants consists of little treatments. Using plants Fabaceae with atmospheric nitrogen significantly reduces the fertilization component (Gaweł 2011). Despite the multiple benefits of growing Fabaceae plants, their share in the crop structure, however, is small.
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