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    Tytuł:
    Effect of selected biostimulants on the yield and quality of the common onion (Allium cepa L.)
    Autorzy:
    Mikulewicz, E.
    Majkowska-Gadomska, J.
    Jadwisienczak, K.K.
    Francke
    Powiązania:
    https://bibliotekanauki.pl/articles/2083601.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    morphology
    nutritional value
    biostimulants
    total yield
    common onion
    Opis:
    A field experiment was conducted in 2017-2018 in the Agricultural Experiment Station owned by the University of Warmia and Mazury in Olsztyn. The experiment had a randomized block design with three replications. The first experimental factor was a number of common onion cultivars: ‘Whitney Wing F1’, ‘Spirit F1’ and ‘Red Baron’. The second experimental factor was the effect of two plant growth biostimulants; Calleaf Aminovital and Maximus Amino Protect, on the yield and quality of the onions. In the control treatment, plots were sprayed with water. The total yield, marketable yield and the marketable yield as a percentage of the total yield, the weight, vertical diameter and horizontal diameter of each onion bulb, the content of dry matter, total sugars, reducing sugars, L-ascorbic acid and nitrates (V) in the onions were determined in the study. The evaluated cultivars differed significantly with regard to the weight and size of the onions. Onions of cv. ‘Whitney Wing F1’ were characterized by a greater yield, and the weight, vertical diameter and horizontal diameter of the bulbs were all higher than they were for the remaining cultivars. The concentrations of dry matter, total sugars, L-ascorbic acid and nitrates (V) were higher in cv. ‘Red Baron’. The contents of L-ascorbic acid and nitrates (V) were significantly affected by the application of biostimulants, and the effects were more pronounced for onions treated with Maximus Amino Protect. The interaction between the experimental factors had a significant effect on the weight of individual onion bulbs, and on the concentrations of dry matter and L-ascorbic acid in the edible plant parts.
    Źródło:
    Acta Agrophysica; 2019, 26, 1; 57-65
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlations between germination capacity and selected physical properties of perennial ryegrass cv. Maja seeds
    Autorzy:
    Kaliniewicz, Z.
    Jadwisieńczak, K.
    Jadwisieńczak, B.
    Potkaj, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/297989.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    seeds
    physical parameters
    germination rate index
    correlation
    Opis:
    Perennial ryegrass is one of the most valuable pasture grasses. The species is recommended for sodding various types of land in Poland due to its fast growth and the ability to produce large numbers of vegetative shoots. Seedling emergence and biomass yield are largely determined by seed quality. This study analyzes the correlations between the basic physical properties of seeds of perennial ryegrass cv. Maja and their germination capacity. The basic dimensions (length, width and thickness) and mass of each of the 150 seeds were determined, and their arithmetic mean diameter, geometric mean diameter, aspect ratio, sphericity index and density were calculated. The seeds were germinated for 14 days, and the results were recorded daily, which enabled to determine germination time for each seed. The relationships between the evaluated parameters were determined by the Student’s t-test for independent samples and correlation analysis. The analyzed physical properties of seeds had no significant effect on the germination rate index. Germinated and non-germinated seeds differed significantly in width, length and arithmetic mean diameter, but they should not be sorted based on their plumpness to improve the quality of seed material because it could lead to a high loss of viable seeds.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2016, 19(1); 5-16
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variability and correlation of the selected physical properties of pumpkin seed (Cucurbita pepo L.)
    Zmienności i korelacja wybranych cech fizycznych pestek dyni zwyczajnej (Cucurbita pepo L.)
    Autorzy:
    Kaliniewicz, Z.
    Jadwisieńczak, K.
    Zalewska, K.
    Sosińska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/93817.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Rolniczej
    Tematy:
    pumpkin
    seeds
    separation
    physical properties
    dynia
    nasiona
    wydzielanie
    cechy fizyczne
    Opis:
    Basic dimensions (length, width and thickness), critical velocity of transporting seeds, sliding friction angle and the mass of pumpkin seeds, obtained from four fruit of various mass were determined. Based on the measurements, volume and thickness of each seed and its spherical index were calculated. Interdependence between the tested properties and indexes was evaluated based on the test for independent samples, analyses of variance, correlation and regression. It was found that the seeds mass is the most variable property and their length is the least variable. Empty and full pumpkin seeds should be separated with a pneumatic separator, where a vertical air stream of velocity approx. 5 m·s-1 is a separating element. Length and mass of seeds may be used at separation of seed material into quality fractions. As a result of separating the smallest seed fraction, a seed material may be obtained in which after the process of removing the fruit-seed coat, 95% of ripe seeds will be available.
    Określono podstawowe wymiary (długość, szerokość i grubość), prędkość krytyczną unoszenia, kąt tarcia poślizgowego i masę pestek dyni zwyczajnej, pozyskanych z czterech owoców o różnej masie. Na podstawie pomiarów obliczono objętość i gęstość każdej pestki oraz jej wskaźniki sferyczności. Współzależność między badanymi cechami i wskaźnikami oceniono na podstawie testu t dla prób niezależnych, analizy wariancji, korelacji i regresji. Stwierdzono, że cechą fizyczną o największej zmienności jest masa pestek, a o najmniejszej – ich długość. Puste i pełne pestki dyni najlepiej jest rozdzielać za pomocą separatora pneumatycznego, gdzie elementem rozdzielczym jest pionowy strumienia powietrza o prędkości ok. 5 m·s-1. Przy rozdzielaniu materiału nasiennego na frakcje jakościowe można wykorzystać jako cechę rozdzielczą długość lub masę pestek. W wyniku oddzielania najmniejszej frakcji pestek można uzyskać materiał nasienny, w którym po procesie usuwania okrywy owocowo-nasiennej znajdować się będzie ok. 95% nasion dorodnych.
    Źródło:
    Agricultural Engineering; 2014, 18, 2; 65-75
    2083-1587
    Pojawia się w:
    Agricultural Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tests of the process of post-production onion waste pelleting
    Badania procesu peletowania poprodukcyjnych odpadów cebuli
    Autorzy:
    Obidziński, S.
    Joka, M.
    Bieńczak, A.
    Jadwisieńczak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/336022.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
    Tematy:
    pelleting
    potato waste
    density
    kinetic durability
    peletowanie
    odpady cebuli
    gęstość
    wytrzymałość kinetyczna
    Opis:
    The aim of the research was to analyse the process of onion waste pelleting in terms of its use as a fodder additive. The paper assesses the influence of the moisture content of shredded onion waste on the energy consumption of the pelleting system and the density and kinetic durability of the obtained pellets. The tests of the pelleting process were carried out on an SS-4 stand, whose main component was the P-300 pellet mill with a flat rotating die with an opening diameter of 8 mm and an opening length of 28 mm, working with a set of two densification rolls. In the course of the tests, the influence of the moisture content of shredded onion waste (17.1%, 19.1% and 24.0%) on the energy consumption of the power mill, the temperature of the working system during pelleting, and the kinetic durability of the obtained pellets were tested. The tests of the pelleting process were carried out at a mass flow rate of shredded onion waste of Q=20 kg·h-1, a rotational speed of the set of densification rolls of nr=170 rpm-1 and a gap between the rolls and the die of hr=0.4 mm. On the basis of the performed tests, it was concluded that as the moisture content of the onion waste increases from 17.1 to 24.0%, the energy consumption of the power mill decreases by 22.6%, along with a decrease in density of approx. 15%, at a minimum reduction in kinetic durability of pellets of approx. 0.5%.
    Celem badań była ocena procesu peletowania (granulowania) odpadów cebuli w aspekcie jego wykorzystania jako dodatku do pasz. W pracy oceniono wpływ wilgotności rozdrobnionych odpadów cebuli na zapotrzebowanie na moc układu granulującego oraz na gęstość i wytrzymałość kinetyczną otrzymanego granulatu. Badania procesu procesu peletowania (granulowania) przeprowadzono na stanowisku SS-4, którego głównym elementem jest granulator P-300 z wykorzystaniem płaskiej obrotowej matrycy o średnicy otworów 8 mm i długości otworów 28 mm, współpracującej z układem dwóch rolek zagęszczających. W trakcie badań określono wpływ wilgotności rozdrobnionych odpadów cebuli (17,1, 19,1 i 24,0%) na zapotrzebowanie granulatora na moc, temperaturę układu roboczego w trakcie procesu granulowania oraz na gęstość i wytrzymałość kinetyczną otrzymanego granulatu. Badania procesu granulowania przeprowadzono przy masowym natężeniu przepływu rozdrobnionych odpadów cebuli Q=20 kg·h-1, przy prędkości obrotowej układu rolek zagęszczających nr=170 obr⋅min-1oraz przy szczelinie między rolkami a matrycą hr=0,4 mm. Na podstawie przeprowadzonych badań stwierdzono, że wraz ze zwiększeniem wilgotności odpadów cebuli od 17,1 do 24,0% następuje spadek zapotrzebowania na moc granulatora o 22,6% oraz spadek gęstości o ok. 15% przy minimalnym spadku wytrzymałości kinetycznej granulatu o ok. 0,5%.
    Źródło:
    Journal of Research and Applications in Agricultural Engineering; 2017, 62, 2; 89-92
    1642-686X
    2719-423X
    Pojawia się w:
    Journal of Research and Applications in Agricultural Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geometric models for analyzing the shape of cauliflower heads
    Autorzy:
    Jadwisieńczak, Krzysztof K.
    Anders, Andrzej
    Choszcz, Dariusz J.
    Powiązania:
    https://bibliotekanauki.pl/articles/27323041.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    3D scanner
    geometric model
    solid of revolution
    maps of deviations
    Opis:
    Selected geometric properties of cauliflower heads cv. Gohan F1 were analyzed by building numerical models with the use of a 3D scanner. Geometric models of cauliflower heads were developed in ScanStudio HD PRO, FreeCAD, and MeshLab programs. Five geometric models describing the shape of cauliflower heads were generated with the use basic geometric figures and drawing tools in FreeCAD. The geometry of numerical models and geometric models was compared in GOM Inspect. The surface area, volume, and detailed geometric dimensions of the developed models were determined. The deviations in cauliflower dimensions calculated by geometric models were mapped. The surface area, volume, and geometric dimensions of cauliflower heads were most accurately represented by the model generated with the Quadric Edge Collapse Decimation (QECD) function. In this model, the relative error of surface area measurements did not exceed 5%, and the relative error of volume measurements did not exceed 4%. This model was also characterized by the smallest average maximum deviation (+) and the smallest average minimum deviation (-) which was estimated at 8%. The proposed geometric model can be used for research and design purposes.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2023, 26(1); 231--247
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of amino acid biostimulators on the size and quality of garlic (Allium sativum L.)
    Autorzy:
    Majkowska-Gadomska, J.
    Mikulewicz, E.
    Jadwisieńczak, K.
    Francke, A.
    Mlyńska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2083759.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    nutritional value
    biometry
    Allium sativum L
    amino acid biostimulators
    Opis:
    A field experiment was conducted in the years 2017-2018 in the area of the Didactic and Experimental Centre, University of Warmia and Mazury in Olsztyn. The experiment was set up in the randomised split block design, in three replicates. The first experimental factor was four winter cultivars of garlic (Allium sativum L.): ‘Arkus’, ‘Harnaś’, ‘Mega’, ‘Ornak’. Within the scope of the second experimental factor, the effect of amino acid biostimulators Calleaf Aminovital and Maximus Amino Protect on the yield and quality of garlic was analysed. The control treatment comprised plots on which only water was applied. The objective of the study was to estimate selected morphological features of bulbs and the content of nutritional components of garlic cultivated with the use of biopreparations. The morphology and the nutritional composition of the edible part of garlic was estimated. Statistically significant impact of the cultivar on bulb mass and horizontal diameter and on the content of L-ascorbic acid and nitrates (V) in the edible part of garlic was demonstrated. Cultivar ‘Ornak’ was characterised by greater bulb mass (64.62 g), vertical and horizontal diameter (4.09 and 4.14 cm), dry matter content (38.0%) and concentration of reducing sugars (1.18 g 100 g–1 fresh matter). Lower bulb mass, height, content of total and reducing sugars and of nitrates (V) were determined in garlic cv. ‘Arkus’. The cultivation of garlic plants with the use of the biostimulators had a significant effect on the number of cloves in a single bulb. The application of Calleaf Aminovital increased their number to an average of 6 cloves×plant–1. Interaction of garlic plants cv. ‘Arkus’ with Calleaf Aminowital significantly reduced the content of nitrates (V) in garlic relative to the remaining cultivation treatments.
    Źródło:
    Acta Agrophysica; 2019, 26, 4; 31-38
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Frictional properties of selected seeds
    Autorzy:
    Kaliniewicz, Z.
    Markowski, P.
    Anders, A.
    Jadwisieńczak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/298455.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    physical attributes
    coefficient of external friction
    relation
    Opis:
    The thickness, width, length and weight of five seed species (buckwheat, vetch, pea, lupine and faba bean) and their external friction angle were determined on two types of surfaces - steel and rubber. The experiment was performed with the use of a an inclined plane with an adjustable angle of inclination that measures the angle of external friction and the time taken by seeds to travel a given distance, which supports the determination of the coefficient of kinetic friction. The measured parameters were used to calculate arithmetic and geometric mean diameter, aspect ratio and sphericity index. The dimensions, weight and the calculated indicators of the examined seeds did not significantly affect their coefficients of static and kinetic friction or their coefficients of rolling resistance and rolling friction. The studied parameters were largely influenced by the type of friction surface, and significantly lower average values were reported for steel than rubber. In the studied seed species, the static friction coefficient was determined in the range of 0.187 to 0.582, kinetic friction coefficient - 0.134 to 0.479, rolling resistance coefficient - 0.148 to 0.529 and rolling friction coefficient - 0.29 to 1.80 mm.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(2); 85-101
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Yield and mineral composition of storage roots of carrots (Daucus carota L.) protected with biological methods
    Autorzy:
    Majkowska-Gadomska, J.
    Dobrowolski, A.
    Mikulewicz, E.
    Jadwisieńczak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/963964.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Opis:
    The aim of this study was to evaluate the yield and mineral composition of storage roots of carrots protected with biological methods, without the use of chemical control agents. The first experimental factor consisted of two carrot cultivars with different maturity periods. The second experimental factor comprised three methods of carrot fly biocontrol, compared in the following treatments: control – unprotected plants, carrots intercropped with dill (cultivar Szmaragd), carrots intercropped with Welsh onions (cv. Parade) and the application of Himal cubes containing paraffin-coated garlic pulp. The storage roots of carrots cv. Nantejska Polana and cv. Flakkese 2 were harvested in the first week of September and in the middle of October, respectively. After harvest, 100 carrot roots were collected from each replication to determine the percentage of roots infested by the carrot fly. In order to evaluate carrot yields in experimental treatments, the total and marketable yield of carrot storage roots were determined. Fifteen storage roots sampled from the marketable yield in each treatment were subjected to chemical analyses. The prepared material was analyzed to determine the content of: total- N, P, K, Mg, Ca and Cu. The organic crop protection methods based on the biological phenomenon of allelopathy as well as the biocontrol agent Himal significantly reduced the carrot fly population relative to the control treatment. An increase was noted in the total and marketable yield of carrots intercropped with Welsh onions, although the species competed for nutrients. Comparable yield was achieved when carrots were protected with Himal. The storage roots of carrots cv. Flakkese 2 intercropped with dill had the highest content of total N, K, Mg and Ca.
    Źródło:
    Journal of Elementology; 2017, 22, 3
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the size of containers and number of plants per pot on concentrations of nitrates(V), mercury and lead in the herbage of six botanical varieties of basil
    Autorzy:
    Majkowska-Gadomska, J.
    Kulczycka, A.
    Mikulewicz, E.
    Jadwisienczak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/13585.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Źródło:
    Journal of Elementology; 2018, 23, 4
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The usefulness of briquettes and pellets from selected plant materials for energy purposes
    Przydatnosc brykietu i peletu z wybranych materialow roslinnych na cele energetyczne
    Autorzy:
    Kowalczyk, J.
    Zarajczyk, J.
    Sobczak, P.
    Mazur, J.
    Rudy, S.
    Cycan, D.
    Winiarczyk, M.
    Jadwisienczak, K.
    Zalewska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/793415.pdf
    Data publikacji:
    2012
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    briquette
    pellet
    plant material
    wheat straw
    rye straw
    maize straw
    energy purpose
    energetics
    calorific value
    combustion heat
    statistical analysis
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 2
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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