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The aim of this study was to preliminarily assess the effect of enrichment of meadow sward through direct undersowing with hybrids of grasses from the Lolium-Festuca complex on their share in sward a year after treatment and on the quality of produced fodder. Studies started in 2016 in Helenowo (Żuławy Elbląskie) on permanent meadow situated on alluvial soil. The meadow was dominated by Dactylis glomerata...
The experiment was carried out in the years 2014-2016 in two sites: Osiny-south-east Poland and Jadwisin- central Poland. In both places potatoes were grown under two crop production systems: organic and integrated. In Osiny the plantation was placed on heavier soil and in Jadwisn on lighter one. Six potato cultivars from different group of maturity were tested. The biggest impact on the tuber yield...
Grasslands were seen in the past primarily as a source of feed. The important function of grassland, beside the role of feed, consists in their natural value and role in the landscape. The aim of this study was to assess natural and landscape values of the distinguished meadow-pasture communities in Kłodzko. It is located in the south-western part of Poland, within the Sudety chain and is surrounded...
Soil and some plant products are still found to be contaminated by DDT residues or metabolites 30 years after its total ban. In order to ensure high quality of organic products and their compliance with the EU rules, following a monitoring carried out to assess DDT and its metabolites residues level in different soils, we started a research program to test some methods of soil remediation, using fungal...
The aim of this paper was to analyze the Polish stakeholders from the organic sector in terms of their expectations towards the potential employees and to evaluate what kinds of the professional knowledge and skills are expected by the employers. A survey with stakeholders from the organic food chain was carried out in 2015 in Poland. The investigation has been conducted within a European project...
The present study shows the content of different potassium forms found in lessive soil and was based on a 12-year long field experiment. In this work the following conditions were used: differential N fertilization and differential irrigation (fields were either left with no water or irrigated). The soil samples were collected from three different depths that matched genotypes of lessive soil: 0-30,...
Between 2005 and 2008 in Swadzim, on the fields of the Experimental and Didactic Station Gorzyń, a department of Poznań University of Life Sciences, the two one factor trials have been carried out on two soil complexes: rye and good wheat ones. The purpose of the study was to determine changes of selected chemical properties of soils under the influence of the use of natural fertilizers, straw or...
We conducted a two-year study to prove the antagonistic properties between three Trichoderma sp. strains entered into soil in compost carriers and plant pathogens of the Fusarium and Alternaria genera. Another aim of the study was to analyse the influence of these strains on the value of the biological fertility index (BIF) and the commercial yield of napa cabbage. Eleven combinations were used in...
The paper is aimed at summarising long-term studies on the effectiveness of biological ensilage stimulators containing homo- and hetero-fermentative cultures of lactic acid bacteria used in the conservation of meadow sward intended for fodder or energy production. Study material consisted of silages from wilted meadow sward ensiled in big cylinder bales wrapped in a plastic film with the addition...
In the publication the role of products for biological plant protection against noxious organisms is shown in structure formation and vegetable crops agrophytocenoses stabilization, their quantitative and qualitative composition. It is pointed out that application of biological pesticides with different mechanism of action exerts a positive effect on plant growth and development, facilitates the phytosanitary...
Legume-cereal mixtures cover a considerable cultivated area in Poland what follows mainly from better and more stable yielding of mixed stands than pure ones. Besides a very good protein fodder the legume – cereal mixture can leave also good stand for subsequent plant. It is an effect of symbiosis of legumes with symbiotic bacteria and thanks to that lower doses of nitrogen are used in the mixture...
The paper outlines the analyses of chemical composition of groundwater from 13 monitoring well located in the vicinity of Lake Gopło. The measurements were performed between 2014 and 2017. We measured the concentrations of NO3-, NH4+, PO43-, Ca2+, Mg2+, K+, Na+, Cl-, HCO3-as well as electric conductivity and pH. In major analyzed samples the concentrations of the above chemical species fell in the...
Experiments were conducted at the Seed Laboratory, Department of Agronomy, Poznań University of Life Sciences, Poland. Seeds colonised by Fusarium ssp. fungi to different extent and selected Trichoderma ssp. strains (T1 - T. atroviride, T2 - T. atroviride, T3 - T. harzianum, T4 - T. harzianum, T5 - T. harzianum) were investigated. There were three independent series of bivariate analyses with 4 replicates...
In the years 2005-2008, the trials were established on two soils, rye and wheat complexes in Swadzim, in the fields of the Experimental and Didactic Station Gorzyń, of the Poznań University of Life Sciences. The purpose of the study was to determine changes in selected physical properties of soils under the influence of natural fertilizers, straw or winter intercrop under maize grown for silage in...
In the experimental trial the influence of the aqueous extracts on the germination capacity and surface contamination of the seeds of Brassica oleracea L. white cabbage, ‘Stonehead’ variety was assessed. The extracts in the form of macerate, infusion and decoction were prepared with the use of different morphological parts of 40 plants species. The results obtained allowed to indicate the plants the...
Only products containing substances listed in the Regulations (EC) No 889/2008 and 354/2014 can be used in the protection of organic crops. Despite the common list of active substances and schemes of qualifying products for use in organic farming, availability of measures to protect organic farming in the Member States vary widely. The paper presents data collected in 2017. Obtaining information concerning...
Intensification of agriculture is one of the threats to the environment. Large amounts of applied mineral fertilizers and chemical plant protection products cause soil pollution, as well as pollution of surface and ground waters. Some of the harmful substances get into the human digestive tract through plants and animals. Therefore, more and more people introduce organic food into the menu in the...
The aim of the study was to evaluate the impact of bacterial preparation, containing strains of Lactobacillus genera that stimulate the synthesis of 1,2-propanediol and carboxylic acids of low molecular weight, on aerobic stability of meadow sward silages and biogas yield by means of heterofermentation. Lactobacillus buchneri, L. diolivorans and L. reuteri, which are synergistically active in the...
The paper presents the results of the research on the effect of PRP SOL fertilization on the basic chemical properties of soil and composition of soil solution. The soil has been sampled from the level of humus of many years' experiment established on light soil using traditional fertilization (NPK) and PRP SOL fertilizer was used instead of PK fertilization. Nitrogen doses remained the same in both...
The studies were conducted in 2010-2012, at the Agricultural Experimental Station in Swadzim (52°26′20″N, 16°44′58″E), belonging to the Poznań University of Life Sciences, Poland. The response to sorghum intercropping of two maize varieties: Absolut (medium-early FAO 250) and medium-late Vitras (FAO 270) was evaluated, with reference to pure sowing as a control. Sorghum was represented by the medium-late...
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