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Wyświetlanie 1-7 z 7
Tytuł:
Wplyw poziomu azotanow na emisje N20 z wybranych gleb w badaniach modelowych
The influence of nitrates (V) level on N2O emission from selected soils in model investigations
Autorzy:
Stepniewska, Z
Szmagara, A.
Powiązania:
https://bibliotekanauki.pl/articles/1401792.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
gleby
azotany
poziom azotanow
emisja gazow
podtlenek azotu
denitryfikacja
badania modelowe
soil
nitrate
nitrate level
gas emission
nitrous oxide
denitrification
model research
Opis:
Celem pracy było określenie wpływu poziomu azotanów w glebie na tempo denitryfikacji, mierzonej ubytkiem azotanów oraz ilością emitowanego podtlenku azotu. Do badań wybrano: glebę płową- Apglp.glp oraz dwie gleby brunatne - Bli i Bpgm-gc.sk, które wzbogacono dawkami azotanów do wartości odpowiadającej nawożeniu 100 i 200 kg N-NO3/ha. Emisja podtlenku azotu z gleby rozpoczęła się już w pierwszych trzech dniach, a jej wielkość maksymalna zależała nie tylko od dawki wprowadzonych azotanów (V), ale była przede wszystkim związana z cechami rodzajowymi gleby, które określają jej potencjalną zdolność do denitryfikacji i przy tym samym poziomie azotanów (V) była dwukrotnie większa w glebie brunatnej, w której zawartość węgla organicznego wynosiła 0,98% w porównaniu z glebą A o poziomie węgla organicznego równym 0,73%.
The aim of this work was determination, influence on level of nitrate (V) in soil on denitrification rate, which was measured by amount of emitted nitrous oxide.For studies podzolic soil - Apglp.glp and two brown soils - Bli and Bpgm-gc.sk were selected. Native level of nitrate (V) in these soils was riched by addition of nitrates, up to the level of fertilization 100 and 200 kg N-NO3/ha. Emission of nitrous oxide from soil began before third day of incubation.Maximum emission depend not only on doses provided nitrates, but first of all was connected with soil properties.These properties determinate potential ability of soil to denitrification and was two times higher in soil B, with organic carbon level 0,98% than in soil A, which contained 0,73%C org. at the same level if nitrates.
Źródło:
Acta Agrophysica; 2000, 38; 209-219
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of acetylene block on measurements of N2O emission from soils
Autorzy:
Stepniewska, Z.
Szmagara, A.
Powiązania:
https://bibliotekanauki.pl/articles/24561.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
emission
greenhouse gas
measurement
soil
acetylene blocking technique
nitric oxide
Źródło:
International Agrophysics; 2004, 18, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ellagic acid content in selected wild species of fruit roses
Autorzy:
Karczmarz, K.
Szmagara, A.
Stefaniak, E.A.
Powiązania:
https://bibliotekanauki.pl/articles/12314979.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
Rosa canina
Rosa moyesii
Rosa pendulina
wild species
wild rose
rose fruit
medicinal plant
ellagic acid
ellagic acid content
spectrofluorimetric method
Opis:
Ellagic acid (EA) is a natural antioxidant, belonging to the group of polyphenolic compounds. It displays a broad spectrum of pro-health effects, ranging from the prevention of cancer to antiviral properties. It is present in many fruit from the rose family (Rosaceae): strawberries, raspberries, blackberries and walnuts as well as cranberries and grapes. The available literature states that the fruit of roses, in addition to their aesthetic and functional applications, also show therapeutic properties, which, among other things, are associated with a high content of polyphenols, including ellagic acid derivatives. The aim of this research was to determine the differences in the content of free ellagic acid in the fruit of selected rose species. The test material consisted of freeze-dried sublimation and ground fruit from the following species of roses: R. canina, R. moyesii, R. pendulina. The fruit was separated into two fractions: flesh and seeds. Quantitative analysis of free ellagic acid was carried out by spectrofluorimetry. The free EA was present both in the flesh and in the seeds of the studied species of roses. Its content in the mentioned fractions varied depending on the species. The flesh of R. pendulina was characterised by the highest level of EA in free form (247.72 μg·g–1 of dry weight). The seeds of R. moyesii proved to be the most abundant in free EA (105.69 μg·g–1 of dry weight).
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 5; 131-140
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pharmacokinetics of propofol in rainbow trout following bath exposure
Autorzy:
Gomulka, P.
Fornal, E.
Berecka, B.
Szmagara, A.
Ziomek, E.
Powiązania:
https://bibliotekanauki.pl/articles/31775.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Propofol, 2,6-diisopropylphenol, seems to be a good candidate as a fish anaesthetic, however, no study regarding propofol influence on fish has yet been reported. The aim of this study was to examine propofol pharmacokinetics in rainbow trout (Oncorhynchus mykiss) following bath exposure. Fish (n = 100) were exposed to an aqueous propofol bath at 12°C and 17°C; propofol concentration in the bath was 10 mg L(-1). Plasma concentration-time profiles were determined using LC-MS, and pharmacokinetic parameters were calculated. Propofol was absorbed quickly at both temperatures. Its concentration reached 13.8 ± 2.7 μg mL(-1) and 16.1 ± 2.1 μg mL(-1) at 12°C and 17°C, respectively, during the first minute of exposure. Blood plasma propofol decreased rapidly to 6.8 ± 0.7 μg mL(-1) and 6.3 ± 2.2 μg mL(-1) at 12°C and 17°C respectively, during the first 10 minutes of the recovery. The half-life time of propofol was 1.5 h and 1.1 h at 12°C and 17°C, respectively. We found propofol anaesthesia in trout effective and safe. However, it caused a gradual decrease of respiratory rate, and therefore a specific anaesthesia protocol should be developed.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of the term of mulching and herbicides spraying on ‘Foxtrot’ tulip flowering and bulbs yield
Autorzy:
Marcinek, B.
Durlak, W.
Szmagara, M.
Galant, H.
Węgrzyn, A.
Powiązania:
https://bibliotekanauki.pl/articles/12676175.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
tulip
Foxtrot cultivar
ornamental plant
flowering plant
plant flowering
plant yield
bulb
mulching
spraying
herbicide treatment
herbicide effect
application term
Opis:
The experiment studied the effect of various mulching terms of ‘Foxtrot’ tulips with wheat straw in combination with spraying of plantations with herbicides using various doses and different amounts of working liquid. The mulch was laid out just after planting and after the soil had frozen. The experiment included combinations, in which the mulch was left until the end of the growing season or removed in spring. Spraying with single (linuron 675 g·ha–1 + lenacyl 1000 g·ha–1) or double herbicide dose (linuron 1350 g·ha–1 + lenacyl 2000 g·ha–1) was made before covering the soil with mulch and also on mulch – two weeks after planting the bulbs, or in the spring after thawing the soil. Volumes of 300 dm3 and 600 dm3 of working liquid were used for spraying. Tulips covered with mulch bloomed 2–3 days later and formed longer shoots as compared to non-mulched ones. The highest yield of marketable bulbs and the first-selection ones was obtained from tulips mulched immediately after planting and sprayed 2 weeks later with herbicides used in a single dose of 600 dm3 of a working liquid. Mulching of tulips after soil freezing and removal of mulch in spring adversely affects the number and weight of commercial bulbs. The lowest yield was obtained in combinations, in which the mulch was not used. The use of additional nitrogen fertilization before laying out the mulch did not affect the yield of tulips. Herbicides can be used both before mulching and after covering the plantation with mulch. It is not necessary to increase the dose of the agent and the amount of water.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 4; 71-82
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of selected preparations on some biometric features of Tardiva’ panicled hydrangea (Hydrangea paniculata Siebold) depending on the irrigation frequency
Autorzy:
Durlak, W.
Marcinek, B.
Szmagara, M.
Dudkiewicz, M.
Konopińska-Mamej, A.
Powiązania:
https://bibliotekanauki.pl/articles/12298905.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
panicle hydrangea
Hydrangea paniculata
Tardiva cultivar
ornamental plant
flowering plant
biometric feature
irrigation frequency
Opis:
One of the ways to reduce the water consumption by plants while maintaining their proper quality is to use substances that limit excessive transpiration. Three preparations at following concentrations: Moisturin (10%), Root-Zone (4.5%) and Vapor Gard (1%), were used in the experiment. Moisturin and Vapor Gard were applied in the form of a single spray, and Root-Zone as a single irrigation in mid July.The aim of the research was to assess the effect of several anti-transpirants on some biometric features of the ‘Tardiva’ panicled hydrangea depending on the frequency of irrigation. The following parameters were measured: area, perimeter, width and length of leaf blade, length and width of inflorescences, and the diameter of shoots. Treatment of H. paniculata cv. ‘Tardiva’ with Root-Zone and Moisturin anti-transpirants with a single irrigation every other day allows to reduce the water consumption and obtain shrubs of a quality comparable with plants irrigated twice a day. The use of Moisturin with a twice daily irrigation positively affected the length and width of inflorescences.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 39-51
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of fungal activity on photosynthetic parameters of different canna cultivars under field conditions
Autorzy:
Kopacki, M.
Szmagara, M.
Jamiołkowska, A.
Skwaryło-Bednarz, B.
Rysiak, K.
Marcinek, B.
Powiązania:
https://bibliotekanauki.pl/articles/12688693.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
Canna
plant cultivar
ornamental plant
flowering plant
field condition
fungal activity
photosynthetic parameter
Opis:
Three-year studies (2014–2016) were conducted in Lublin in the south-east Poland. The objects of research were the plants of ten canna cultivars: ‘Aida’, ‘America’, ‘Botanica’, ‘Cherry Red’, ‘La Boheme’, ‘Lucifer’, ‘Picasso’, ‘Robert Kemp’, ‘President’ and ‘Wyoming’. Observations were carried out each year in October. Plants with symptoms of stem and root rot, leaves yellowing and wilt were noticed on the investigated plantations. The plants were studied with regard to photosynthetic activity and also by disease index for all cultivars and statistical analysis was carried out upon them. The effect of disease index on photosynthetic intensity and transpiration was determined after the calculation of Pearson’s correlation coefficient. Infected plants were collected for mycological analysis. The results of mycological analysis showed that canna plants were colonized by Fusarium spp., Sclerotinia spp. and Alternaria spp. Alternaria alternata, Fusarium oxysporum, Fusarium avenaceum and Sclerotinia sclerotiorum predominated among pathogenic species. The best health status and the lowest number of colonies were noticed for plants of cv. ‘Botanica’. The infection of canna leaves by pathogenic fungi has negatively affected the intensity of photosynthesis, transpiration, stomatal conductance and sub-stomatal CO2 concentration and it was largely related to the degree of infestation of specified varieties of canna. The photosynthesis process was limited especially in ‘La Boheme’, ‘Picasso’, ‘Cherry Red’ and ‘President’ cultivars, which were infected most frequently by pathogenic fungi. It was confirmed by negative Pearson’s coefficient.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 201-210
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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