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Conducted study concerns the influence of fertilisation (manure, onion and tomato compost) and three strains of Trichoderma isolated from soils on the total number of moulds, including plant pathogens of the Fusarium and Alternaria and the yield of radish. The research proved that the number of the microorganisms were statistically significantly modified by the type of combination and the term of...
The study focused an assessing the influence of xenobiotics, such as NaCl and diesel oil on germination and early development of maize (Zea mays L.). Through the test the seed germination and growth inhibition of shoot and root of maize were evaluated. The experiments were carried out at different xenobiotics concentration and their mix. It was observed that the presence solely of compounds did not...
The main advantage of sorghum cultivation consists in its resistance to difficult thermal and moisture conditions during vegetation, especially in summer. Sorghum is planted in wide rows, and is characterized by a slow initial growth, which makes it subjected to segetal weed competition in the early stages of its development, especially under organic management system. The aim of the study was to...
The paper analyses the sustainability level of agricultural production in the ecological, social and economic aspect in 50 organic farms located in the southern Poland. Material and energy inputs, balancing the organic substance, work burdening and economic and production effects were assumed as the measures used for the assessment of those three categories of balancing the production process. Area...
The studies were conducted in the years 2008-2010, at Agricultural Experimental Station in Grabów, which belongs to Institute of Soil Science and Plant Cultivation - State Research Institute (IUNG-PIB) in Puławy. The first experimental factor was yellow lupine variety: Taper (self-determinate type) and Dukat (traditional type), and the second row factor was share of components in the mixture (lupine...
The quality of the organically produced fruit and vegetables is a frequent subject of research, but very few authors have investigated the differences in the content of biologically active compounds in organic agricultural crops depending on the age of the organic farms. At the same time, many studies have shown that the soil and the whole agroecosystems need time to stabilize after conversion of...
The aim of this work was to undertake a study to determine the amount of biogas emitted from fractions prepared from sugar beet leaves. Four types of combinations of batch mass were subjected to analysis. Tests were conducted over a period of 30 days. Measurements were taken twice a day, at the same time, from the moment of placing the batch into fermenters until the end of fermentation. In this study,...
The aim of this study was to determine the effect of aqueous extracts prepared from dry and fresh matter of tarragon (Artemisia dracunculus L.) on feeding of pea aphid (Acyrthosiphon pisum Harris), Colorado potato beetle (Leptinotarsa decemlineata Say.) and cereal leaf beetle (Oulema melanopa L.). The experiment was conducted under laboratory conditions in six replications. Extracts were prepared...
Field study was conducted between 2011 and 2012 to determine the effects of liquid manure injected into plant row just before planting carrot in strip tillage. Strip tillage machine consisted of four units attached to frame. Every unit included shank, covering discs and rolling basket. The applicator consisted of a plastic tank mounted on the top of frame, valve, delivery hoses and injection tubes...
The objective of this study was to assess the content of oxalates in the samples of cocoa powder available on Polish market, obtained from the cocoa beans from organic and conventional farms. The cocoa is an important food product, which is used for immediate consumption as well as for chocolate production. It is also used in confectionery. The cocoa is of high sensory and nutritional value. However,...
Our paper describes a method of computer classification of roots of selected cereals using the digital images. The roots classification based on the digital images requires various processing algorithms and analysis to obtain the necessary data. The paper describes preparation methods of biological material and research samples as well as computer image processing and analysis, which was used in the...
Only products containing substances listed in the Regulations (EC) No 889/2008 and 354/2014 are permitted in the protection of organic crops from pests. 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 varies widely. Obtaining information concerning the list of plant...
Studies on the response of maize to use PRP fertilizer was carried out in 2012-2015 in the Department of Agronomy at the University of Life Sciences in Poznan, in the fields of the Experimental Station Gorzyń in Złotniki. Replacement of the traditional maize fertilization with phosphorus and potassium by PRP technology, both full (PRP SOL with PRP EBV) and the PRP SOL led to a significant increase...
A field experiment was conducted in 2012 to 2013 to determine the effect of tillage, including deep strip tillage, shallow strip tillage and conventional tillage, and weed control method (untreated control, mechanical, chemical) on growth and yield of maize planted after winter rye cover crop. Strip tillage was executed with the use of a universal active tool for the strip tillage and mechanical inter-row...
The article presents the results of a study of microbial properties of soils influenced by emissions from the salt mine in Kłodawa vs salinity parameters. 15 medium-sized surface soil samples were collected from fields adjacent to the salt mine. The following parameters were measured in the samples: the content of water-soluble cations, pH, electrolytic conductivity, the content of carbon and nitrogen,...
The objective of studies carried out in 2011 was to investigate the most important biological traits of the spawning population of the vendace from Lake Lake Śremskie lying in the Międzychód-Sieraków Lakeland and to compare the results to the literature data. The biological material was obtained in the autumn, immediately before spawning. To achieve the objective of the research the following features...
Undersowing is a method of supplementing and enriching species composition of grasslands without interfering in soil habitat. The method brings about an increase of grassland biodiversity and allows for maintaining many local ecotypes of fodder grasses in meadow sward. The aim of the study was to assess the effect of enrichment of meadow sward through direct undersowing short-term intensive grass...
Labile fractions of soil organic matter (SOM), e.g. hot (or cold)-water extractable C and living (active) microbial biomass (MB) are much more dynamic and sensitive to changes in soil management practices than total SOM and can be useful indicators of soil quality and SOM transformation processes as influenced by different factors, e.g. agro-technical practices (mineral and organic fertilizers). The...
The aim of this work was to characterize the productivity of conducting organic production in farms oriented to milk production. The aim of this work was achieved by determining the productivity of some factors of production, i.e. land, labor and machinery. The scope of this work covered farms associated in a producer group from the Podkarpackie province. The analysis of the obtained results showed...
The production of organic food entails particular difficulties, which can be seen especially in the initial period of the implementation and improvement of the system. The success of the activities undertaken in this area can be measured by analysing the evolution trend of this kind of agricultural production, which is the aim of the present study. The trend was specified in relation to the number...
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