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The aim of the presented research was to determine the influence of aqueous extracts from selected common weeds, such as tansy (Tanacetum vulgare L.), goldenrod (Solidago virgaurea L.) and soapweed (Saponaria officinalis L.) on the germination capacity and initial development of maize (Zea maize L.). The research was carried out using a modified short-term germination test and early growth of Phytotoxkit...
The aim of the paper was to show how cooling of silicone photovoltaic cells influences the amount of electrical energy they produce. The research was conducted both in the laboratory and under real outdoor conditions. Current-voltage characteristics for two different thermal states of PV cells were outlined. Obtained power values for a PV cell working under the influence of refrigerant and without...
Most of products of petroleum have a toxic effects to plants, animals and also to man. Overworked motor oils and mixtures of different petroleum substances are especially dangerous for environment. The aim of this work was to determine the effect of overworked motor oil, diesel and their mixtures on the growth and advancement of chosen species of plants. The effect of increasing concentration of the...
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 weed infestation of maize planted after winter cover crop being intended for silage. Strip tillage was executed with the use of a universal active tool for the strip tillage...
The research has been carried out in laboratory conditions at the Institute of Agricultural Engineering at Wroclaw University of Environmental and Life Sciences. Two single- and two-stream ejector nozzles were used for the tests, which operated at the pressure of 0.2 and 0.4 MPa. The water sensitive papers placed on artificial plants were the sprayed objects. During tests, the sprayer moved at a constant...
W artykule przedstawiono automatyczną, wirową zaprawiarkę porcjową, która przeznaczona jest do zaprawiania ziarna siewnego zbóż zaprawami nasiennymi proszkowymi, zawiesinowymi i płynnymi, przy czym możliwe jest sekwencyjne stosowanie kilku rodzajów zapraw nasiennych, w tym biologicznych, dzięki zastosowaniu (opcjonalnie) kilku niezależnych układów dozujących i aplikujących zaprawę w postaci płynnej...
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 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 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...
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...
Pyridine amidoximes are compounds used in production of substances with definite chemical and biological properties. They are used among other things as drugs, fungicides and bactericides. An important aspect of research consists in determination of influence of a chemical compound on the natural environment, including assessment of influence on land plants. The aim of the presented study included...
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