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The paper contains soil and floristic characteristics of grassland communities where ecological arable tillage is conducted. The characteristics includes the assessment of variability and a detailed description and interpretation of soil and phytosociological conditions. The research was conducted in September 2015 in an individual farm land in Mniszek (a village in Wielkopolskie Voivodship in Czarnkowsko-Trzcianecki...
The study presents the results of the research on dispensers used to lure cherry fruit flies in biological tests together with yellow sticky-coated visual traps. The field tests showed that yellow Rebell traps with the dispenser containing the food attractant based on the blend of ammonium acetate and ammonium carbonate as well as putrescine (added in a separate container) were the most suitable in...
The paper presents selected results of performance tests of working elements of a wood machining device. The focus was on operational durability of its working elements. In order to assess the condition of these elements, tests of mechanical properties, the chemical composition of the operational surface layer, and microscope observations of selected areas were carried out, as well as evaluation of...
Communicative enzymatic indicators were used in this study to assess the quality of arable soils along main thoroughfares in Lublin. The study comprised 16 areas located by roads with similar car traffic intensity. Soil samples were collected from the topsoil layer (0-20 cm) of farmlands, at distances of 10, 30, 50 and 100 m from the road verge. The activity of 4 enzymes was measured in the samples:...
The area and productive use of permanent grasslands decrease in Poland. The main reason is a small stock of ruminants - the main biomass consumers. Meadow sward and soil become degraded, which results in economic losses and in the worsening of protective functions of grasslands with respect to natural environment of rural areas. There is an urgent need of grassland protection and of maintaining their...
Studies on the association Potentillo-Festucetum arundinaceae (R. Tx. 1933) North. 1940 were conducted in the years 2011-2013 at the Bukówka river and the Molita and Czarna canals in the Czarnków-Trzcianka county in the Wielkopolskie province. Based on the floristic analyses of 23 relevés prepared according to Braun-Blanquet the sward of this association a total of 31 species from 14 botanical families...
The aim of the study was to evaluate the level of weed infestation of maize cultivated in organic farming depending on natural fertilization (20 and 40 t of composted manure per 1 ha) and cultivation method: A - control object (without weed control), B - brush weeder (three times during the vegetation season), C - weeding hoe (three times during the season), D - brush weeder (two times during the...
The paper presents the results of studies on the usefulness of the texture images USG (ultrasonography) analysis by GLCM (Gray Level Co-Occurrence Matrix) in neural modeling. Tests pertained to the efficacy of the classification of the corpora lutea located in ultrasound images of the domestic cattle ovaries performed by artificial neural networks. The tests were performed using three different methods:...
The objective of the paper was to determine the impact of organic farms equipment with technical production means on the economic outcomes. The research covered 50 organic farms located in the southern Poland. Equipment of farms with technical production means, basic production categories and the index of technical equipment efficiency (WUT) as well as the technical investment index (WIT) were determined...
The aim of the study was to compare the health status of biologically protected broad bean sprouts, taking into account differentiated number of biopreparation applications. The field experiments were carried out in the years 2010-2012 at the Agricultural Experimental Farm in Prusy, near Krakow. Evaluation of fungal diseases severity was performed in a 5-point scale in broad bean phase BBCH (70-79)...
Objective of the study consisted in the evaluation of the effect of white mustard as a companion plant in the cultivation of broad bean, cultivar Bartek, on the level of plant infestation with black bean aphid Aphis fabae Scop., and also on the occurrence of its natural enemies. The field experiment comprised the following objects: control - broad bean, Bartek cv. as a homogenous crop, sown at 50...
The aim of the study was to determinate the effect of soybean plant arrangement on the number and dynamics of the most important herbivores. Preliminary studies were carried out in 2015, at RZD Pawłowice, Poland belonging to Wrocław University of Environmental and Life Sciences. Colonization of plants by herbivores was compared for row spacing 15 and 30 cm and also for seeding rate 50 and 90 seeds...
The article presents changes in the total annual emission of limited toxic compounds released into the atmosphere together with exhaust gases from farming machinery used in Poland between 2011 and 2013. The calculations were based on the amounts of the excise tax refund for ‘farming’ fuel, which were expended from the budget during the years under study. The methodology of calculations presented by...
Appropriate management of resources and the most effective use of inputs is a fundamental factor on which production profitability depends. Productivity indicators are one of the measures of using resources and inputs. The paper deals with the analysis of land productivity, technical fixed assets, labour resources, mechanization and power energy inputs in 15 environmentally sustainable farms and 15...
The level of consumer awareness related to organic farming among the residents of Ostroleka County is presented in the study. The research material consists of the survey data.120 people were surveyed in 2015. The questionnaire consisted of two parts. The first part concerned the information related to organic farming while the second one related to the information about a person interviewed. The...
The paper presents a complex characteristics of grassland communities situated in the valley of the Samica Leszczyńska River, in the village Błotkowo (Wielkopolskie Voivoidship, Leszczyński County). It contains a detailed description and interpretation of soil conditions and phytosociological research, which is connected with it. On the basis of phytosociological relevés, floristic composition of...
Ensuring the profitability of working biogas plants is a key factor for the development of biogas market. Apart from the price obtained for sold electricity, the substrates are the most important factor, particularly the ratio of their acquisition cost to methane efficiency. Thus, the objective of this paper was energy and economic analysis of the typical biogas plant with a capacity of 1 MWe working...
In the years 2014-2015 the study on the suitability of 7 oat varieties: 2 hulled (Bingo, Krezus) and 5 naked (Cacko, Maczo, Nagus, Polar, Siwek) for cultivation in organic farming was done. The experiments were conducted in two locations: Grabów (Mazowieckie province, organic farm of IUNG - PIB) and Chwałowice (Mazowieckie province, organic farm of CDR in Radom). In 2014 the yield of oats was on average...
The existing methods for the calculation of the performance indicators of machine and tractor aggregates (MTA) do not take into account the effect of biodiesel fuel on their operation and therefore require corrections considering the key and associated factors. The aims of the investigation are clarification of mathematical dependencies in case another kind of fuel is used and development of a methodology...
In the years 2013-2014, the effectiveness of plant-derived preparations in controlling the rosy apple aphid Dysaphis plantaginea (Passerini) and the green apple aphid Aphis pomi (de Geer) was assessed in an organic apple orchard. Use was made of own in-house made preparations that included infusions of the field horsetail Equisetum arvense (L.), garlic Allium sativum (L.), seeds of white mustard Sinapis...
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