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Described studies were performed in a long-term irrigated meadow experiment at varied fertilisation. The aim of the study was to assess the effectiveness of meadow renovation in terms of yielding, botanical composition of meadow sward and its protein content in relation to diverse fertilisation. Seven variants were compared including five fertilised with mineral fertilisers at a rate of 60, 120, 180,...
Tasks imposed by contemporary agriculture on plant breeding are becoming increasingly complex. In order to meet these requirements breeders are applying various methods to expand genetic variability of stock materials for breeding work. Distant crossing is one of them. Wild subspecies are potential donors of such traits as resistance to diseases, adverse environmental factors or male sterility. Pollen...
In the present work the formulation of gluten - free bread made of wholegrain buckwheat flour or mixtures of this flour with rice and maize flour (each on substitution level 20%) was evaluated. The buckwheat flour was selected from organic flours available on market after evaluation of their chemical characteristics, mainly on the basis of phenolic compounds content and antioxidant activity. The breads...
Soil contamination by heavy metals poses a threat to plants, terrestrial animals, and in consequence, human health. Heavy metals emitted primarily by anthropogenic activity may be accumulated in edible plant or animal tissues and then consumed by humans. The need for a reliable detection and continuous monitoring of heavy metal contents in agricultural soils is undeniable. Moreover, a cost-effective...
The most troublesome waste from the poultry industry is the manure produced in Poland in the amount of 2.5 million tons per year. It is a substrate with high energy potential whose potential is, however, used very little. Research conducted at the Institute of Biosystems Engineering at the University of Life Sciences in Poznan showed that the biogas efficiency of substrate is 121.40 m3⋅Mg - 1 fresh...
The paper presents the phytosociological structure of selected meadows and pastures used agriculturally, located in Kłodzko County, versus environmental factors. The communities of researched grasslands were classified into MolinioArrhenatheret class and two orders: Molinietalia i Arrhenatheretalia. Four groups were distinguished: Angelico-Cirsietum oleracei, Arrhenatheretum elatioris, Lolio-Cynosuretum...
Nowadays nearly 40% of Earth’s land is used by agriculture. Large areas of arable land are covered by cash crops monocultures, and most common intensive agricultural practices are highly dependent on water, synthetic mineral fertilizers, chemical pesticides, and increasingly also on the products of genetic engineering. The mentioned means of agricultural production, aiming at maximizing yields while...
In the European Union, including Latvia there is an increasing interest in cultivation and production of industrial hemp (Cannabis sativa L.) fibres as well as seeds. The aim of the investigation was to evaluate N fertilization and sowing rate suitable for seed yield productivity of hemp cultivar ‘Purini’ in Latvian environmental conditions. Research was carried out to study the effect of the environmental...
Laboratory analyses were performed at the Department of Agronomy, the Poznań University of Life Sciences. Experiments were conducted on two strains of Trichoderma ssp. to investigate the aftereffect of sprinkling irrigation of blue lupin plants and seed soaking time (20, 40, 60 min). Results indicate a significant effect of Trichoderma ssp. strain and sprinkling irrigation on basic parameters of the...
Studies on the reaction of winter oil seed rape on the application of fertilizers PRP were carried out in 2012-2015, in the Department of Agronomy at the University of Life Sciences in Poznan, in the fields of the Experimental and Didactic Department Gorzyn in Złotniki Station. The aim of the study was to evaluate the influence of fertilization on yield and quality of winter oil seed rape during the...
The aim of this paper was to evaluate production technologies in organic farms in terms of the achievement of general and specific objectives of organic farming. The research was conducted in 210 organic farms (which had undergone the conversion period) located in Warminsko-Mazurskie, Lubuskie, Dolnośląskie, Zachodniopomorskie provinces. For the achievement of the objective pursued, crop rotation...
In order to assess the microbial and chemical quality of grass silages made of sward, without the addition of any inoculants, six organic farms were chosen, in which grass silages were the principal feed for dairy cows. In all farms silages were made from the second crop of sward and formed into bales. Dry matter content was from 45 to 57 %. Samples were collected for two consecutive years. Silages...
In the years 2014-2015 at the Institute of Plant Breeding and Acclimatization, Branch Jadwisin the investigation concerned the influence of irrigation of organic potato plantation on tuber yield and tuber size distribution was carried out. Eight potato cultivars of different maturity class were assessed. It was stated that irrigation significantly influenced both the total tuber yield and the share...
This paper reports the results of research into water flow in three various soil types. Soil data were obtained on the basis of a classification by Wösten and van Genuchten [38]. The mathematical model of water flow in soil was formulated using Richards’ equation. The data for hydraulic conductivity and suction pressure of unsaturated soil were obtained using the van Genuchten model. The method of...
The studies were conducted in the years 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 reaction of two cultivars of sorghum (GK Aron mid-early and late Sucrosorgo 506) the intercrop with corn, compared to pure sorghum seed was evaluated. Corn was represented by a variety of medium-late, with...
The objective of the paper was to determine and evaluate the level of used and provided mechanical services in organic farms. The scope of the paper covered research in 50 organic farms located on the territory of Małopolskie, Podkarpackie and Śląskie Voivodeship. The costs of used mechanical services were on the average 1978.5 PLN annually. Per one hectare of agricultural land it was PLN 150.6. A...
The study focused on toxicity evaluation of selected complexing organic compounds (EDTA, rhamnolipids, quaternary pyridylketoximes and pyridineamidoximes) to monocot plant - maize (Zea mays L.) in aquatic and soil systems. Tests evaluating the seed germination and growth inhibition of shoot and root of maize were carried out at different compound concentrations (ranging from 0 to 1000 mg/kg of dry...
The paper discusses the contents and chemical forms of potassium in post-mining soils after 35-year-long experimental cultivation. In the experiment the post-mining dump deposits were fertilized with N, P, K, NK, NP, PK or NPK. Wheat and rape were sowed on the fields. The control field was left unfertilized. In the years 2014-2016 surface (0-30 cm) and subsurface (30-60 cm) layers of fertilized and...
The aim of this study was to assess the effect of sward enrichment in valuable grass and legume species through undersowing on the amount and quality of yield and its usefulness for ensilage. Two-factorial field experiment in a cross system was set up on experimental meadow. Three 0.8 ha plots were delineated, one was undersown with a mixture of grasses and Trifolium pratense L. (MI), the second -...
Buckwheat production and its consumption is still small. The little popularity of buckwheat cultivation could be attributed to the small yield and profitability of growing it (despite the high price which can be gained from its production) as well as lack of consumption patterns related to buckwheat products. However, it starts to attract adequate attention on part of both agricultural producers and...
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