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This study aimed at estimating the amount of nitrogen derived by yellow lupine from the atmosphere, mineral fertilizer and soil at different nitrogen fertilization rates and developmental phases of this test plant. Yellow lupine was cultivated in three fertilization variants: without nitrogen fertilization and after application of 30 and 150 kg N·ha-1. Harvest was performed in flowering and full maturity...
Lack of water causes non-uniform development of plants during their growing season or even their drying-up. Nitrogen is one of the most important nutrients in the nutrition of higher organisms as well as microbes. Evaluation of the nitrogen nutrition status of plants and determining optimum doses of this element has a significant effect with regard to the economic aspect of production and necessity...
The number of weed species occurring in agricultural crops in Poland ranges from 300 to 400, and in potato cultivation this number ranges from 29 to 55 species. Potato is a plant which is heavily grown over with weeds, since it is cultivated in wide row spaces and is characterized by slow initial growth. The aim of the 3-year study was to estimate the effect of cultivation practices such as limited...
Most flowering species including Brassica genera have genetically controlled ability to out-crossing (gametophytic or sporophytic self-incompatibility – SI). In Brassica, self-incompatibility is sporophytically controlled by a single multiallelic locus, termed the S locus, with more than 100 haplotypes identified so far. From the breeding practice point of view, outcrossing is desired for obtaining...
The aim of the research was comparison of the effect of plough tillage and conservation tillage with the use of various catch crops on the yield and grain quality of spring wheat sown in monoculture on rendzina soil. The experiment was set up on rendzina soil with split-plot design in four replications and included plough tillage (A) and conservation tillage, conducted with two methods: with autumn...
The aim of this study was to determine the effect of a catch crop on the content of nutrients in grain of spring barley grown after it, intended for animal feed, using different intensities of chemical plant protection and nitrogen fertilization. Field experiments were carried out at the Research Station at Mochełek on Alfisols, in 2008-2011. The split- -plot experimental design was used. The effect...
Most quality characteristics of potato tubers are affected by an interplay of plant genetic traits and environmental factors, including weed control. As a result, detailed studies on plant responses to changing agrotechnological factors seem to be justified. It was attempted in the present work to determine the effect of weed control methods on total and true protein content in two kinds of table...
The purpose of this study was to determine the effect of the soil conditioner UGmax on nitrogen, phosphorus and magnesium contents in potato tubers. A field experiment was carried out at the Zawady Experimental Farm in 2008-2010. The trial was set up as a split-plot design with three replications; the soil was classified as the very good rye complex of soil quality. The following factors were examined:...
Right selection of hybrid for cultivation is an especially important issue because maize belongs to a group of plants undergoing considerable breeding development. It is manifested not only in a higher number of new hybrids but also in changes in selection of various breeding types. The field experiments were carried out at the Department of Agronomy of the University of Life Sciences in Poznań, on...
Introducing cultivars of yellow lupine that tolerate delays in the sowing dates (thermoneutral) or ones that ripe faster (self-completing) into agricultural practice makes it possible to broaden the cultivation of this agriculturally valuable species. The aim of the study was therefore the determination of the effect of the sowing date on the size and quality of the seed yield of yellow lupine in...
The effects of legume-cereal mixtures are usually expressed in the yield of seeds and total protein, sometimes in the yield of straw and post-harvest residues. Species composition and proportion of components in the mixture are a factor that strongly varies it. The aim of the research was determining productivity (the yield of seeds and straw as well as of the biomass of post-harvest residues) of...
Olej z nasion żmijowca babkowatego charakteryzuje się wysokim udziałem (ponad 80%) wielonienasyconych kwasów tłuszczowych, w tym rzadko spotykanymi kwasami: γ-linolenowym oraz stearidonowym. Znajduje zastosowanie w przemyśle spożywczym i farmaceutycznym. Bor, magnez i siarka pełnią w roślinach szereg ważnych funkcji fizjologicznych. Duży odsetek gleb w Polsce charakteryzuje niska zasobność w przyswajalne...
The studies were carried out in the years 2009-2011 on medium heavy mixed rendzina soil. The aim of the study was comparison of the effect of tillage system and different types of catch crops on the weed infestation level in spring wheat canopy sown in monoculture. The experiment included plough tillage and conservation tillage with autumn and spring disking of catch crops. Four methods of plot regeneration...
This study estimated the amount of nitrogen taken up by spring triticale from different sources depending on varied nitrogen fertilization and the development phase when the previous crop – yellow lupine was harvested. Lupine was cultivated in three fertilization variants: without nitrogen fertilization and after the application of rates 30 kg·ha-1 N and 150 kg·ha-1 N. Lupine harvest was performed...
Trójczynnikowe doświadczenie polowe nad agrotechniką pszenicy jarej w krótkotrwałej monokulturze wykonano w latach 2012-2013 w Chełmcach (52o61’ N; 18o44’ E), na glebie kompleksu żytniego dobrego. Czynnikami doświadczenia były: A – sposób uprawy roli związany ze stosowaniem masy organicznej (pięć wariantów z uprawą pożniwną gruberem oraz orką przedzimową lub bez orki oraz ze stosowaniem obornika i...
The most often used substrate in agricultural biogas plants is maize. Due to an increase in the area of maize acreage and the necessity of use proper crop rotation in the plant cultivation, alternative raw materials should be looked for. Apart from the high biomass yield, alternative plants for biogas production should be characterized by a favourable energy efficiency index. The favourable value...
The work presents data from nine Institute of Meteorology and Water Management (IMGW) stations collected from 1971 to 2005 in central-east Poland. The relative precipitation index (RPI) was applied to determine the frequency of individual drought classes during the growth period. Moreover, spatial distribution of precipitation amounts in the study area was presented. Also, the direction and significance...
Cthe aim of this study was to determine the effect of the cultivar and mineral fertilization, taking into consideration the use of ash from wheat straw, on biomass production of winter oilseed rape. Also changes in pH value and the contents of forms of macro- and microelements available for plants in typical lessive soil after three years of using different rates of ash from winter wheat straw was...
The aim of this study was to determine the quality of flour, dough and bread made from the grain of winter wheat grown in a continuous cropping system or after oil plants (winter rapeseed, spring rapeseed, white mustard, brown mustard) in production systems of different intensity. The above products, obtained from wheat grain harvested in three growing seasons (2006/2007, 2007/2008, 2008/2009), were...
W doświadczeniu wazonowym, zrealizowanym w trzech seriach w latach 2010-2012 w laboratorium szklarniowym UWM w Olsztynie, oceniano wpływ wsiewki koniczyny perskiej (Trifolium resupinatum L.) oraz zagęszczenia roślin na cechy morfologiczne pszenicy jarej (Triticum aestivum ssp. vulgare L.). Czynnikami doświadczenia były: I) sposób siewu pszenicy jarej – siew czysty oraz z wsiewką koniczyny perskiej,...
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